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The aim was to compare reproductive outcomes of Nelore heifers submitted to timed AI (TAI) protocols, with 7 or 9 d of permanence of the intravaginal progesterone (P4) device and different times of prostaglandin F2α (PGF) administration, for first (n = 935) and second (n = 530) services. On Day -24, heifers without corpus luteum (CL) underwent a protocol for induction of ovulation. On Day 0, heifers received a P4 device (0.5 g) and 1.5 mg estradiol (E2) benzoate. In order for the TAI to be carried out on the same day, these treatments were performed 2 d later on the heifers treated with the 7-d protocol. Additionally, heifers received 0.5 mg PGF at different times, resulting in four experimental groups: 9dP4-PGFd9 (n = 365); 9dP4-PGFd7 (n = 369); 9dP4-PGFd0&9 (n = 364); 7dP4-PGFd0&7 (n = 367). These nomenclatures indicate for how many d the P4 device was kept and the specific day on which PGF was given. At P4 removal, all heifers received 0.5 mg E2 cypionate and 200 IU eCG, and TAI was performed 2 d later. Effects were considered significant when P ≤ 0.05 (superscript letters a,b) whereas a tendency was assumed when 0.05 < P ≤ 0.10. Groups 9dP4-PGFd0&9 and 7dP4-PGFd0&7 had lower percentage of heifers with CL at P4 removal. The diameter (mm) of the dominant follicle (DF) was affected by treatment at P4 removal (9dP4-PGFd9: 11.3 ± 0.3b; 9dP4-PGFd7: 11.8 ± 0.2ab; 9dP4-PGFd0&9: 12.6 ± 0.2a; 7dP4-PGFd0&7: 10.8 ± 0.2c) and at TAI (9dP4-PGFd9: 12.7 ± 0.3ab; 9dP4-PGFd7: 13.2 ± 0.2a; 9dP4-PGFd0&9: 13.4 ± 0.2a; 7dP4-PGFd0&7: 12.4 ± 0.3b). Expression of estrus (%) was affected by treatment (9dP4-PGFd9: 89.6a; 9dP4-PGFd7: 93.5a; 9dP4-PGFd0&9: 88.2ab; 7dP4-PGFd0&7: 85.6b). There were no differences among treatments for P/AI on Day 40 (30-35 d post AI), final P/AI (between Day 70 and parturition) and pregnancy loss (between Day 40 and final P/AI). When the permanence of the P4 device was compared, regardless of PGF treatments, 9-d protocols resulted in greater DF diameter at P4 removal and at TAI, and greater expression of estrus (90.4 vs. 85.6%) than the 7-d protocol. Despite that, the 7-d protocol resulted in greater P/AI on Day 40 (55.3 vs. 49.1%). In addition, there was an interaction between protocol duration and body weight, in which heavier heifers (≥ 307 kg) had greater P/AI when treated with the 7-d protocol, in comparison to 9-d. In conclusion, longer TAI protocols (9 d of P4 device duration) resulted in greater DF diameter and expression of estrus. However, the shorter TAI protocol (7 d of P4 device duration) produced greater P/AI on Day 40, particularly in heavier heifers. Within 9-d protocols, the additional dose of PGF on Day 0 or the anticipation of the PGF to Day 7 did not influence fertility.

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The objective of this study was to verify the causes of the lower response of primiparous Bos indicus cows to the ovulation synchronization protocol. Two experiments were performed to evaluate the biochemical profile, oocyte and follicular cell quality (Experiment 1) and pregnancy (Experiment 2). In Experiment 1, suckled primiparous (n = 24) and multiparous cows (n = 24) were submitted to ovum pick up (OPU). On Day 0 (D0), all cows received 2 mg of estradiol benzoate (EB) and an intravaginal progesterone insert (P4). Five days (D5) after the first hormonal administration (EB + P4), all follicles larger than 3 mm were counted on each ovary, and ovum pick-up (OPU) was performed. On day 12 (D12), the intravaginal progesterone insert was removed, and measurement and aspiration of the largest follicle were performed. Blood samples were collected on D5 and D12 to evaluate the concentrations of glucose, cholesterol, NEFA, IGF-1 and insulin. In Experiment 2, suckled primiparous (n = 50) and multiparous (n = 50) cows were subjected to an ovulation synchronization protocol based on E2/P4 (D0: 2 mg EB plus P4 intravaginal insert; D8: 500 µg of cloprostenol, 1 mg cypionate estradiol and 300UI of eCG; D10: artificial insemination). In addition, blood samples were collected on D10 for evaluation of the same hormones and metabolites described in Experiment 1. In all studies, calves remained with the cows during the experimental period. In experiment 1, the number of oocytes grade 1 (P = 0.83), grade 2 (P = 0.23) and grade 3 (P = 0.51), total number of retrieved oocytes (P = 0.14), oocyte quality index (P = 0.93) and total viable oocytes (P = 0.38) did not differ between primiparous and multiparous cows. The number of follicles at the time of follicular aspiration (20.7 ± 1.5 vs. 18.0 ± 1.9; P = 0.05) and the diameter of the largest follicle on D12 (13.5 ± 0.6 vs. 11.4 ± 0.6; P = 0.04) were greater in multiparous cows, and the number of degenerated oocytes was greater in primiparous cows (1.9 ± 0.7 vs. 1.2 ± 0.3; P = 0.05). On D5, the concentrations of IGF-1 (P = 0.47), insulin (P = 0.08), total cholesterol (P = 0.47), NEFA (P = 0.77) and glucose (P = 0.55) in the blood and IGF-1 (P = 0.97) and insulin (P = 0.11) in the follicular fluid did not differ between parity groups. On D12, there was no difference in the concentrations of IGF-1 (P = 0.26), total cholesterol (P = 0.32), NEFAs (P = 0.31) and glucose (P = 0.93) in the blood between primiparous and multiparous cows, however, the serum insulin concentration (P = 0.04) was higher in primiparous cows. There was no correlation between serum and follicular fluid insulin concentrations (r = 0.17; P = 0.31), however, there was a low correlation between serum and follicular fluid IGF-1 concentrations (r = 0.47; P = 0.002). Quantification of transcripts did not differ between parity groups. In experiment 2, concentrations of NEFA (P = 0.12) and insulin (P = 0.16) in the blood and P/AI (P = 0.93) did not differ between parity [60 % (30/50) primiparous vs. 60 % (30/50) multiparous]. In contrast, blood concentrations of IGF-1 (P = 0.0001), total cholesterol (P = 0.005) and glucose (P = 0.01) were greater in primiparous cows. It was concluded that the oocyte quality and expression of the genes evaluated in the granulosa cells were not different between primiparous and multiparous cows. Unexpectedly, the pregnancy rate did not differ between parity. Nevertheless, the blood concentrations of IGF-1, total cholesterol and glucose were greater in primiparous cows.

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The objective of the present study was to evaluate the effect of estradiol valerate administered at the beginning of the ovulation synchronization protocol on the pregnancy rate of Bos indicus cows. In the experiments, the following products from MSD, Sao Paulo, Brazil were used: estradiol valerate (EV), estradiol benzoate (EB), intravaginal progesterone device (P4), estradiol cypionate (EC), equine chorionic gonadotropin (eCG) and cloprostenol (PGF). In Experiment 1, Bos indicus cows (n=899) with a body condition score (BCS) of 2.76 ± 0.01 were included in a 3 (device) × 2 (protocol: 5 mg of EV or 2 mg of EB) factorial design. There were three types of P4 devices: a new device (New), a device previously used for 9 days (1×), and a device previously used for 18 days (2×). Nine days later (D9), the P4 device was removed, and cows received 300 IU of eCG. In addition, cows in the EB group received 1 mg of EC and 265 µg of PGF. Timed artificial insemination (TAI) was performed 48 h after P4 device removal in the EB group (TAI48) and 54 h after P4 device removal in the EV group (TAI54). In Experiment 2, Bos indicus cows (n=434) with a BCS of 2.62 ± 0.01 received a new P4 device or one previously used for 9 days and 5 mg of EV. On D9, all cows received 300 IU of eCG, and the P4 devices were removed and distributed in TAI48 and TAI54 cows. In Experiment 3, Bos indicus cows (n=429) with a BCS of 2.80 ± 0.01 were divided into the control and EV/EC groups. All cows received a P4 device. In addition, cows in the control group received 2 mg of EB, and cows in the EV/EC group received 5 mg of EV on D0. On D9, all cows received 1 mg of EC and 300 IU of eCG, and the P4 devices were removed. Cows in the control group also received 265 µg of PGF. All cows were inseminated 48 h after the removal of the P4 device. In Experiment 1, there was no effect of the interaction between protocol and P4 device on the occurrence of estrus (P=0.45) or on the pregnancy per artificial insemination ratio (P/AI; P=0.30). In addition, the occurrence of estrus and P/AI were not different between in the two estradiol groups (P=0.12 and P=0.82) and across the types of intravaginal P4 device (P=0.91 and P=0.47). In Experiment 2, the pregnancy rate was lower (tendency) in TAI48 cows (P=0.07). In Experiment 3, the estrus rate (P=0.12) and P/AI (P=0.56) were similar between the experimental groups. In summary, protocols using estradiol valerate without exogenous ovulation induction require adjustments in the timing of AI from 48 to 54 h after P4 device removal. However, a combination of estradiol valerate at the beginning of the protocol and estradiol cypionate nine days later successfully induced ovulation in Bos indicus cows inseminated 48 h after P4 device removal.

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Introducción: investigaciones recientes con la práctica del taichí mostraron beneficios en la funcionalidad, capacidad de ejercicio y calidad de vida de los pacientes con enfermedad pulmonar obstructiva crónica (EPOC). La falta de estudios en nuestro medio y la necesidad de nuevas modalidades de tratamiento impulsó la realización de este trabajo. El objetivo fue valorar el impacto del taichí en un programa de rehabilitación respiratoria de la EPOC. Material y método: estudio piloto, aleatorizado, prospectivo y abierto. Se trabajó con 17 pacientes portadores de EPOC, 7 en el grupo control (CNTL) y 10 en el grupo tratamiento (TCm). Recibieron un programa de rehabilitación respiratoria durante 12 semanas. El grupo TCm con taichí como intervención terapéutica. Se comparó la similitud de las variables sociodemográficas y clínicas. Resultados: los grupos analizados fueron similares en la mayoría de las variables (edad, sexo, sociodemográficas, Gold, Charson, índice tabáquico IPA). En cuanto a las variables resultado, todas las categorías analizadas en los cuestionarios del índice PROMIS previo al inicio, al mes y a los tres meses, evidenciaron una mejoría entre los valores iniciales y finales en ambos grupos, siendo mayor en TCm, aunque no estadísticamente significativo, con valores p ≤ 0,05. En el cuestionario SGRQ, el análisis de los resultados no mostró diferencias significativas entre CNTL vs TCm al mes (44±5 vs 46±5 p 0,742) y a los tres meses (44±5 vs 40±6 p 0,916), con mejoras a favor en los valores del grupo TCm. El índice BODE registró valores menores, evidencia de una mejoría en grupo TCm a los tres meses (2±0,6 vs 3±0,4 p 0,889), sin ser estadísticamente significativa (p ≤ 0,05). Conclusiones: el beneficio del taichí dentro de un programa de rehabilitación tradicional mostró mejoras no significativas en funcionalidad y calidad de vida relacionada con la salud, su inclusión aparece como promisoria, requiriendo una mayor investigación futura.

Recent studies involving Tai Chi have shown benefits in the functionality, exercise capacity, and quality of life of patients with COPD. The lack of studies in our region and the need for new treatment modalities prompted this study. The objective was to assess the impact of Tai Chi in a Pulmonary Rehabilitation Program for COPD. Method: Pilot, randomized, prospective, and open-label study; with two similar groups of patients with COPD, who were included in a Pulmonary Rehabilitation program for 12 weeks; one of them with Tai Chi as a therapeutic intervention. The similarity of sociodemographic and clinical variables was compared. Results: The analyzed groups were similar in most variables (age, sex, sociodemographic, GOLD, Charlson, smoking index IPA). Within the outcome variables in the self-administered PROMIS index prior to the start, at one month, and at three months, all categories analyzed showed an improvement between the initial and final values in both groups, with a greater improvement in the TCm group, although not statistically significant with p-values ≤ 0.05. In the SGRQ questionnaire, the analysis of the results showed no significant differences between the CNTL and TCm groups at one month (44±5 vs. 46±5, p 0.742) and three months (44±5 vs. 40±6, p 0.916); with better values in the TCm group. The BODE Index recorded lower values, indicating an improvement in the TCm group at three months (2±0.6 vs. 3±0.4, p 0.889), although not statistically significant (p ≤ 0.05). Conclusions: The benefit of Tai Chi within a traditional rehabilitation program showed non-significant improvements in functionality and health-related quality of life. Its inclusion appears promising, requiring further future research.

Estudos recentes com Tai-chi mostraram benefícios na funcionalidade, capacidade de exercício e qualidade de vida em pacientes com DPOC. A falta de estudos em nosso meio e a necessidade de novas modalidades de tratamento motivaram o estudo. O objetivo foi avaliar o impacto do Tai-chi em um Programa de Reabilitação Respiratória para DPOC. Método: Estudo piloto, randomizado, prospectivo e aberto, com dois grupos semelhantes de pacientes com DPOC, que receberam um programa de reabilitação respiratória por 12 semanas; um deles com o Tai-chi como intervenção terapêutica. A similaridade das variáveis sociodemográficas e clínicas foi comparada. Resultados: Os grupos analisados foram semelhantes na maioria das variáveis (idade, sexo, dados sociodemográficos, GOLD, Charson, índice de tabagismo IPA). Dentro das variáveis de resultado no índice PROMIS autoadministrado na linha de base, em um mês e em 3 meses, todas as categorias analisadas mostraram uma melhora entre os valores iniciais e finais em ambos os grupos, sendo maior no grupo TCm, embora não estatisticamente significativa com valores de p ≤ 0,05. No questionário SGRQ, a análise dos resultados não mostrou diferenças significativas entre os grupos control e TCm em 1 mês (44±5 vs 46±5, p 0,742) e 3 meses (44±5 vs 40±6, p 0,916), com melhores valores no grupo TCm. O índice BODE registrou valores mais baixos, evidência de uma melhora no grupo TCm aos 3 meses (2±0,6 vs 3±0,4, p 0,889), sem ser estatisticamente significativo (p ≤ 0,05). Conclusões: O benefício do Tai-chi dentro de um programa de reabilitação tradicional mostrou melhorias não significativas na funcionalidade e na qualidade de vida relacionada à saúde; sua inclusão parece promissora e requer mais pesquisas.

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This cross-sectional study aimed to assess whether levels of anxiety, perceived stress, and self-perception of happiness during the Covid-19 pandemic were lower among Tai Chi (TC) practitioners. An online questionnaire was applied from September 2020 to November 2021 through email list and instant messaging application "WhatsApp". In total 368 individuals, 341 of whom did not practice TC, coming from a university and sports academies and 27 TC practitioners from the Brazilian Society of TC and Oriental Culture were included. Sociodemographic, mental health, habits related to physical activity and the State Anxiety Inventory (STAI), Perceived Stress Scale (PSS14) and the Andrews Faces Scale were collected to assess level of state-anxiety, perceived-stress, and self-perception of happiness, respectively. Each independent variable with the outcome variables (severe anxiety level, severe stress level, moderate/severe stress level and self-perception of happiness) were analyzed for simple and multiple logistic regression model. Individuals who do not practice TC are more likely to have a severe level of anxiety (OR=3.55; CI95%CI: 1.37-9.20) and a moderate/severe level of stress (OR=2.60; 95%CI: 1.07-6.35), p<0.05. TC practitioners are more likely to perceive themselves as happy than non-practitioners (OR=3.18; 95%CI: 1.16-8.71), p<0.05. Do not practice regular physical activity (OR=2.88; 95%CI:1.50-4.34); (OR=1.7; 95%CI: 95%: 1.09-2.74) and being young were associated with high levels of stress, p<0.05. The TC practice during the pandemic promoted lower level of perceived stress, state anxiety and greater self-perception of happiness, showing the importance of TC practice and maintaining the frequency of physical activity during the pandemic.

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We aimed to evaluate the effects of early weaning on the productive and reproductive characteristics of Nelore heifer progeny. Ninety-five calves from primiparous (PRI) and multiparous (MUL) dams were assigned to one of two weaning strategies; 1) early weaning at 150 d (149 ±â€…1.97) of age (EW; n = 16 from PRI and 31 from MUL); or 2) conventional weaning at 240 d (247 ±â€…2.41) of age (CW; 16 from PRI and 32 from MUL). All heifers received ~5 g/kg of body weight (BW) of creep-feed as fed from 90 d of age until weaning. After weaning, each group of heifers was transferred to a Brachiaria spp. paddock and received 5 g/kg of BW of a protein-energy supplement until 12 mo of age. Then, heifers were confined and fed a diet with a ratio of 79:31 (corn silage: concentrate) for 4 mo, during which they were submitted to a hormonal protocol to induce puberty and timed artificial insemination (TAI). Reproductive tract score (RTS, 1 to 5 scale: 1 being infantile and 5 being cyclic) and endometrial thickness were determined at 12 mo of age, rump fat thickness (RFT), and BW every 28 ±â€…4 d through the breeding season, and plasma concentrations of IGF-I were evaluated at 12, 14, and 16 mo. At 15.6 mo of age heifers were submitted to a P4/E2 protocol for TAI at day 0 (D0), and a second TAI was performed at D22 in nonpregnant heifers. Ultrasound was used to determine the presence of corpus luteum on D10 and dominant follicle (DF) diameter and blood perfusion on D2 and D0. Data were analyzed using SAS by ANOVA or logistic regression. Though heifers from EW were lighter (P < 0.05) than CW at postweaning time points and CW presented a greater (P = 0.002) RFT than EW heifers from 11 to 15 mo, weaning strategy did not affect (P > 0.1) body condition score at TAI. Concentrations of IGF-I did not differ (P > 0.1) between heifers weaned at 150 and 240 d. The proportion of pubertal heifers, endometrium tone and thickness, and RTS at 16 mo did not differ (P > 0.1) between EW and CW groups. The diameter of DF on D2 and D0 and follicular blood perfusion on D0 were greater (P < 0.05) for heifers in the CW group than EW group, but P/AI at first and second TAI did not differ (P > 0.1) between groups. In conclusion, early weaning in Nelore heifers moderately reduces postweaning growth but does not affect puberty and reproductive performance before the breeding season when submitted to confinement.

In beef cattle operations, heifers represent the most current genetic improvement and are integral to the future of the herd. Factors such as age and weight at weaning and average daily gains impact fertility and longevity of beef heifers. The present study compared the effects of two weaning strategies (150 d of age vs. 240 d of age) on the growth and reproductive characteristics of Nelore Heifers. Comparing the weaning strategies of Nelore heifers, the present study indicates that: 1) heifers weaned at 150 d were lighter than heifers weaned at 240 d; and 2) puberty, concentration of IGF-I, and reproductive tract development and performance did not differ between weaning strategies. Shows that early weaning in Nelore heifers moderately reduces postweaning growth but does not affect reproductive performance.

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Las enfermedades cardiovasculares están determinadas por ciertos factores de riesgos, la prevalencia y sinergia de éstos genera un de-terminado riesgo cardiovascular que deteriora la calidad de vida de quienes lo padecen. La realización de actividad física es considerada como una herramienta útil para disminuir uno de los factores de riesgo más importantes, la obesidad, medida mediante el índice de masa corporal. Sin embargo, no todos los seres humanos poseen las mismas características y capacidades físicas, por ende, la realización de ejercicio está restringida a éstas. Es en este sentido que se desarrolla el siguiente informe, el cual contempla una revisión sistemática que enfrenta a dos terapias complementarias: Yoga v/s Tai Chi, buscando la evidencia que permita la recomendación de una de ellas para la disminución de IMC en personas mayores con DM2. Los artículos fueron extraídos desde la plataforma académica PubMed, sometidos a 3 cribados de búsqueda, y criterios de inclusión y exclusión, resultando en la obtención de 4 artículos para el análisis, a partir de esta observación se obtiene que la realización de yoga es beneficiosa para la disminución de el IMC al caso índice. Por ende, se recomienda el uso de la terapia complementaria yoga, puesto que esta favorece la reducción del IMC en pacientes con enfermedades crónicas no transmisibles en comparación a la terapia complementaria Tai Chi[AU]

Cardiovascular diseases are determined by certain risk factors, the prevalence and synergy of which generates a certain cardiovascular risk that deteriorates the quality of life of those who suffer from it. Physical activity is considered a useful tool for reducing one of the most important risk factors, obesity, measured by the body mass index. However, not all human beings have the same physical capacities, therefore, exercise is restricted to them. It is in this sense that the following report is developed, which contemplates a systematic review that confronts two complementary therapies: yoga v/s Tai Chi, looking for the evidence that allows the recommendation of one of them for the decrease of BMI in elderly people with DM2.The articles were extracted from the academic platform PubMed, subjected to 3 search screens, and inclusion and exclusion criteria, resulting in obtaining 4 articles for analysis, from this observation it is obtained that the performance of yoga is beneficial for the decrease of the BMI to the index case. Therefore, the use of yoga complementary therapy is recommended, since it favors the reduction of BMI in patients with chronic noncommunicable diseases compared to Cardiovascular diseases are determined by certain risk factors, the prevalence and synergy of which generates a certain cardiovascular risk that deteriorates the quality of life of those who suffer from it. Physical activity is considered a useful tool for reducing one of the most important risk factors, obesity, measured by the body mass index. However, not all human beings have the same physical capacities, therefore, exercise is restricted to them. It is in this sense that the following report is developed, which contemplates a systematic review that confronts two complementary therapies: yoga v/s Tai Chi, looking for the evidence that allows the recommendation of one of them for the decrease of BMI in elderly people with DM2.The articles were extracted from the academic platform PubMed, subjected to 3 search screens, and inclusion and exclusion criteria, resulting in obtaining 4 articles for analysis, from this observation it is obtained that the performance of yoga is beneficial for the decrease of the BMI to the index case. Therefore, the use of yoga complementary therapy is recommended, since it favors the reduction of BMI in patients with chronic noncommunicable diseases compared to Tai Chi complementary[AU]

As doenças cardiovasculares são determinadas por certos factores de risco, cuja prevalência e sinergia geram um certo risco cardio-vascular que deteriora a qualidade de vida das pessoas que delas sofrem. A atividade física é considerada uma ferramenta útil para reduzir um dos factores de risco mais importantes, a obesidade, medida pelo índice de massa corporal. No entanto, nem todos os seres humanos têm as mesmas características físicas e, por isso, o exercício é restrito a eles. É nesse sentido que se desenvolve o pre-sente relatório, que contempla uma revisão sistemática que con-fronta duas terapias complementares: yoga v/s Tai Chi, buscando as evidências que permitam a recomendação de uma delas para a diminuição do IMC em idosos com DM2. Os artigos foram ex-traídos da plataforma acadêmica Pubmed, submetidos a 3 telas de busca, e critérios de inclusão e exclusão, resultando na obtenção de 4 artigos para análise, a partir desta observação obtém-se que a realização do yoga é benéfica para a redução do IMC para o caso índice. Portanto, recomenda-se a utilização da terapia complemen-tar yoga, uma vez que favorece a redução do IMC em pacientes com doenças crónicas não transmissíveis em comparação com a terapia complementar Tai Chi[AU]

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Este estudo teve como objetivo sistematizar os resultados das pesquisas que investigaram a relação entre a prática de TC e a saúde de indivíduos com Hipertensão Arterial Sistêmica (HAS) e Diabetes Mellitus (DM). Realizou-se uma revisão integrativa da literatura e foram realizadas buscas nas bases de dados PubMed, SciELO, LILACS e BVS. Foram incluídos estudos publicados nos últimos 20 anos em inglês, português e espanhol, que discorreram sobre a temática da prática de TC em indivíduos com HAS e DM. Foram excluídos estudos que não atenderam a temática proposta, não disponíveis na íntegra, duplicatas, revisões, anais de congresso, literatura cinzenta e livros. Foram identificados 21 estudos, com delineamentos diversos, realizados em sua maioria na China (n=12), que demonstraram o impacto positivo do engajamento na prática de TC na saúde de indivíduos com HAS e DM, como redução da pressão arterial, controle glicêmico e lipídico. Foram descritos também benefícios em outros aspectos físicos e psicossociais importantes para a manutenção do bem-estar e melhor qualidade de vida. Alguns estudos não descreveram resultados significantes associados à prática de TC . Em contrapartida, a maior parte dos estudos revisados relataram benefícios à saúde de indivíduos com HAS e DM associados à prática de Tai Chi.

This study aimed to systematize the results of research that investigated the relationship between the practice of TC and the health of individuals with Systemic Arterial Hypertension (SAH) and Diabetes Mellitus (DM). This is an integrative review in whicha search was conducted in the PubMed, SciELO, LILACS, and BVS databases. Studies published in the last 20 years, in English, Portuguese and Spanish, which discussed the theme of the practice of Tai Chi in individuals with SAH and DM, were included. Studies that did not meet the proposed theme, not available in full, duplicates, reviews, conference proceedings, gray literature and books were excluded. Twenty-one studies were identified, with different designs, carried out mostly in China (n=12), which demonstrated the positive impact of engaging in this bodily practice on the health of hypertensive and diabetic patients, such as blood pressure reduction, glycemic and lipid control. Benefits in other physical and psychosocial aspects that are important for the maintenance of well-being and better quality of life were also described. Some studies did not describe significant results associated with the practice of CT. In contrast, most of the studies reviewed reported health benefits for individuals with SAH and DM associated with the practice of Tai Chi.

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This intervention follow-up study evaluated anxiety and stress levels and self-perceived happiness of individuals linked to the health field who did not practice Tai Chi and compared these variables before and after practicing this art. One hundred twenty-three participants were subdivided into two groups: G1) Older health professionals (n=41) and G2) Younger pre-university students interested in the health field (n=82). Participants received a 60-minute Tai Chi class. The Perceived Stress Scale (PSS-14) was applied before the practice, and the State-Trait Anxiety Inventory (STAI) and Andrews Face Scale were used before and after the class. Generalized linear models and the Bowker symmetry test were applied for data analysis. 46.3% and 30.5% of participants in G1 and G2 had mild stress levels, and 43.9% and 46.3% had moderate stress levels, respectively. After practicing Tai Chi, both groups presented significantly lower mean anxiety scores. In G1, 31.7% of participants went from moderate to mild anxiety levels after practice, 19.5% from severe to moderate, and 7.3% from severe to mild. In G2, 28.2% of participants went from moderate to mild anxiety levels after practice, 18.3% from severe to moderate, and 6.1% from severe to mild. Furthermore, 100.0% of individuals in G1 and 96.3% in G2 were happy after the class. Tai Chi was effective in reducing anxiety levels and improving self-perceived happiness.

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ABSTRACT Introduction Tai Chi Softball fully reflects the most complete and coherent concept of Tai Chi exercise, round and smooth, natural and continuous, and is very suitable for the daily exercise of middle-aged and elderly people. Objective Explore the effect of Tai Chi Softball exercise on body shape and bone mineral density of middle-aged and elderly women. Methods 45 volunteers were recruited and divided into a Tai Chi Softball group and a control group; the Tai Chi Softball group was guided by professional trainers to perform Tai Chi Softball exercises for six months. The control group did not perform Tai Chi Softball exercises and tested various physical indicators for comparison. Results The weight and BMI of middle-aged and elderly women showed a decreasing trend. The abdominal and arm skinfold measurements were significantly different from those before the experiment (P < 0.01). Body fat percentage decreased significantly, and muscle weight increased, showing statistical significance (P < 0.05). Conclusion Tai Chi Softball exercise can alleviate the rapid decline in bone mineral density and bone mineral content in middle-aged and elderly women. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução O Tai Chi Softball reflete integralmente o conceito mais completo e coerente do exercício de Tai Chi, redondo e suave, natural e contínuo, sendo muito adequado para o exercício diário de pessoas de meia-idade e idosas. Objetivo Explorar o efeito do exercício de Tai Chi Soft Ball na composição corporal e densidade mineral óssea de mulheres de meia-idade e idosas. Métodos 45 voluntários foram recrutados e divididos em um grupo de Tai Chi Softball e um grupo de controle, o grupo de Tai Chi Softball foi orientado por treinadores profissionais para realizar exercícios de Tai Chi Softball por 6 meses. O grupo de controle não realizou o exercício de Tai Chi Softball, e testou vários indicadores físicos para comparação. Resultados O peso e o IMC das mulheres de meia-idade e idosas mostraram uma tendência decrescente. Entre elas, as medidas de dobra cutânea do abdômen e braço foram significativamente diferentes daquelas anteriores à experiência (P < 0,01). O percentual de gordura corporal diminuiu significativamente e o peso muscular aumentou, apresentando significância estatística (P<0,05). Conclusão O exercício de Tai Chi Softball pode aliviar o rápido declínio da densidade mineral óssea e do conteúdo mineral ósseo em mulheres de meia-idade e idosas. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción El Tai Chi Softball refleja plenamente el concepto más completo y coherente del ejercicio de Tai Chi, redondo y suave, natural y continuo, y es muy adecuado para el ejercicio diario de las personas de mediana edad y mayores. Objetivo Explorar el efecto del ejercicio de Tai Chi Softball sobre la composición corporal y la densidad mineral ósea de mujeres de mediana edad y mayores. Métodos Se reclutaron 45 voluntarias y se dividieron en un grupo de Tai Chi Softball y un grupo de control, el grupo de Tai Chi Softball fue guiado por entrenadores profesionales para realizar ejercicios de Tai Chi Softball durante 6 meses. El grupo de control no realizó el ejercicio, y se sometió a varios indicadores físicos para su comparación. Resultados El peso y el IMC de las mujeres de mediana edad y de edad avanzada mostraron una tendencia a la baja. Entre ellos, las medidas de los pliegues cutáneos abdominales y del brazo fueron significativamente diferentes de las anteriores al experimento (P < 0,01). El porcentaje de grasa corporal disminuyó significativamente y el peso muscular aumentó, mostrando significancia estadística (P < 0,05). Conclusión El ejercicio de Tai Chi Softball puede aliviar el rápido descenso de la densidad mineral ósea y del contenido mineral óseo en mujeres de mediana edad y mayores. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

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Resumo O Tai Chi Chuan (TCC) está entre as Práticas Integrativas e Complementares (PICS) mais utilizadas e apresenta, segundo a literatura científica, evidências clínicas para tratamento de diversos problemas de saúde. Entretanto, pouco se sabe sobre o desenvolvimento dessa modalidade no contexto do Sistema Único de Saúde (SUS). Neste sentido, o objetivo do artigo foi compreender a prática terapêutica do TCC em um serviço de referência em PICS no SUS, a partir de um estudo de caso qualitativo com observação participante e entrevistas semiestruturadas com usuários e terapeutas. Observou-se dessemelhanças entre a prática terapêutica do Tai Chi Chuan e as práticas corporais biomédicas, assim como a presença de diretrizes norteadoras de cuidado do SUS, como o acolhimento, a escuta qualificada, o vínculo terapêutico e a integralidade da atenção. Também foi identificada a prevalência de sofrimento mental como motivo de procura pela prática, necessidade de maior apoio financeiro ao serviço e resistência ao uso da Medicina Tradicional Chinesa por parte da rede de apoio de algumas usuárias.

Abstract Tai Chi Chuan (TCC) is among the most used Integrative and Complementary Health Practices (PICS) and, according to the scientific literature, presents clinical evidence for the treatment of various health problems. However, little is known about the development of this practice in the context of the Brazilian National Health System (SUS). In this sense, the objective of the article was to understand the therapeutic practice of TCC in a reference service in PICS in SUS, from a qualitative case study with participant observation and semi-structured interviews with users and therapists. Dissimilarities were observed between the therapeutic practice of TCC and biomedical body practices, as well as the presence of guidelines for SUS care, such as welcoming, qualified listening, therapeutic connection, and comprehensive care. The prevalence of mental distress was also identified as a reason for seeking the practice, as well as the need for greater financial support for the service, and the resistance to the use of Traditional Chinese Medicine by some female users' support network.

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ABSTRACT Introduction Tai Ji is a martial art rich in traditional Chinese ethnic characteristics. Its flexible, free and open movements make its practice popular and esteemed by many female college students. However, there is a demand for experimental research on the impacts of the art on the physical and mental health of its college practitioners. Objective Verify the effects of Tai Ji practice on the physical health of university students. Methods This study used the methods of literature, experimental and mathematical statistics, through the influence of Tai Ji style number 24 on the physical health of female university students in different groups. Results The research shows that under the intervention of this style, with the same content, intensity, and time of exercise, the physical health of female college students in the low-fitness group was significantly improved. Conclusion Female college students in the medium and high fitness group improved their physical health indicators due to their physical preconditioning. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução O Tai Chi Chuan é uma arte marcial rica em características étnicas tradicionais chinesas. Seus movimentos flexíveis, livres e abertos fazem com que a sua prática seja popular e estimada por uma ampla gama de estudantes universitárias. Porém, há uma demanda de pesquisas experimentais sobre os impactos da arte sobre a saúde física e mental de seus praticantes universitários, no intuito de conduzir e orientar os seus praticantes durante a realização dos eventos esportivos. Objetivo Verificar os efeitos da prática de Tai Chi Chuan sobre a saúde física das estudantes universitárias. Métodos Este estudo utilizou os métodos da literatura, experimental e estatística matemática, através da influência do Tai Chi Chuan estilo número 24 na saúde física das estudantes universitárias femininas em diferentes grupos. Resultados A pesquisa mostra que sob a intervenção desse estilo, com o mesmo conteúdo, intensidade e tempo de exercício, a saúde física de estudantes universitárias do sexo feminino no grupo de baixa aptidão física foi significativamente aprimorada. Conclusão Estudantes universitárias do sexo feminino no grupo de aptidão física média e alta melhoraram seus indicadores de saúde física devido ao seu pré-condicionamento físico. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción El Taichi Chuan es un arte marcial rico en características étnicas tradicionales chinas. Sus movimientos flexibles, libres y abiertos hacen que su práctica sea popular y apreciada por un amplio abanico de estudiantes universitarios. Sin embargo, existe una demanda de investigación experimental sobre los impactos del arte en la salud física y mental de sus practicantes universitarios, con el fin de conducir y guiar a sus practicantes durante los eventos deportivos. Objetivo Verificar los efectos de la práctica de Taichi Chuan en la salud física de estudiantes universitarios. Métodos Este estudio utilizó los métodos de la literatura, experimental y estadística matemática, a través de la influencia de Taichi Chuan estilo número 24 en la salud física de las estudiantes universitarias en diferentes grupos. Resultados La investigación demuestra que, bajo la intervención de este estilo, con el mismo contenido, intensidad y tiempo de ejercicio, mejoró significativamente la salud física de las estudiantes universitarias del grupo de baja forma física. Conclusión Las estudiantes universitarias del grupo de aptitud física media y alta mejoraron sus indicadores de salud física gracias a su preacondicionamiento físico. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

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ABSTRACT Introduction: The practice of Tai-ji has shown a positive effect on the physical functions of the elderly and has been promoted as a recommended daily activity for middle-aged and elderly individuals. However, there is still no scientific evidence about its cardiorespiratory benefits. Objective: Study the effect of Tai-ji on the cardiorespiratory function and physical fitness of the elderly. Methods: A group of elderly people from the same community and in good health, considered suitable for sports experiments was divided into the experimental group for Tai-ji exercise and the control group for vigorous walking exercise. Each week, the Tai-ji exercise with eight steps and the vigorous walking exercise was performed three times in each group. Results: After six weeks of Tai-ji exercise with eight steps of five methods, the vital capacity, maximal oxygen consumption, maximal voluntary ventilation, and oxygen pulse of the experimental group were significantly increased, and the systolic and diastolic pressures were significantly reduced, evidencing an improvement in the performance of the cardiopulmonary function. Conclusion: Tai-ji exercise is beneficial for the cardiopulmonary function and physical health of the elderly and is scientifically useful for improving the mental health level and quality of life of the elderly. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: A prática do Tai-ji tem demonstrado um efeito positivo nas funções físicas dos idosos, tendo sido promovida como atividade diária recomendada aos indivíduos de meia-idade e idosos. Porém ainda não há evidências científicas sobre seus benefícios cardiorrespiratórios. Objetivo: Estudar o efeito do Tai-ji sobre a função cardiorrespiratória e a aptidão física do idoso. Métodos: Um grupo de idosos da mesma comunidade e boa saúde, considerados adequados para os experimentos esportivos foi dividido em grupo experimental para o exercício de Tai-ji e no grupo de controle para o exercício de caminhada vigorosa. A cada semana, o exercício de Tai-ji com oito etapas e o vigoroso exercício de caminhada foram realizados três vezes em cada grupo. Resultados: Após seis semanas de exercício Tai-ji com oito etapas do método de cinco, a capacidade vital, o consumo máximo de oxigênio, a ventilação voluntária máxima e o pulso de oxigênio do grupo experimental foram significativamente aumentados, e as pressões sistólica e diastólica foram significativamente reduzidas, evidenciando uma melhora no desempenho da função cardiopulmonar. Conclusão: O exercício de Tai-ji é benéfico para a função cardiopulmonar e a saúde física dos idosos, mostrando-se cientificamente útil para melhorar o nível de saúde mental e a qualidade de vida dos idosos. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: La práctica del Tai-ji ha demostrado un efecto positivo en las funciones físicas de las personas mayores, habiéndose promovido como actividad diaria recomendada a los individuos de mediana y avanzada edad. Sin embargo, aún no existen pruebas científicas sobre sus beneficios cardiorrespiratorios. Objetivo: Estudiar el efecto del Tai-ji sobre la función cardiorrespiratoria y la forma física de los ancianos. Métodos: Un grupo de ancianos de la misma comunidad y en buen estado de salud, considerados aptos para experimentos deportivos, se dividió en el grupo experimental para el ejercicio Tai-ji y el grupo de control para el ejercicio de caminata vigorosa. Cada semana, se realizaron ejercicios de Tai-ji con ocho pasos y ejercicios de caminata vigorosa tres veces en cada grupo. Resultados: Después de seis semanas de ejercicio Tai-ji con ocho pasos de cinco métodos, la capacidad vital, el consumo máximo de oxígeno, la ventilación voluntaria máxima y el pulso de oxígeno del grupo experimental aumentaron significativamente, y las presiones sistólica y diastólica se redujeron significativamente, lo que evidencia una mejora en el rendimiento de la función cardiopulmonar. Conclusión: El ejercicio Tai-ji es beneficioso para la función cardiopulmonar y la salud física de los ancianos, y está científicamente demostrado que mejora el nivel de salud mental y la calidad de vida de los ancianos. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

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ABSTRACT Introduction: Cardiopulmonary function testing is a fundamental component of the physical examination and an elementary indicator for measuring physical fitness. With advancing age, the cardiopulmonary system will undergo a series of aging changes in morphology and function. Objective: Explore the effect of Tai Chi exercise on cardiopulmonary function in middle-aged and elderly people. Methods: A total of 73 50-75 years old from 5 areas in our city were recruited. A total of 63 healthy subjects were selected, 37 in the exercise group and 26 in the non-exercise group. The heart rate, lung capacity, and 6-min walking distance of each subject were measured in a calm state during the recovery time after walking 10 min after recovery. Results: In a calm state, Tai Chi practitioners had better lung capacity and a lower heart rate than non-practitioners (p0.05). In the immediate recovery time after walking, Tai Chi exercise elevated lung capacity more than non-exercisers (p0.01). Conclusion: Tai Chi exercise can improve the adaptability of cardiopulmonary function in middle-aged and elderly people after exercise. Level of Evidence: Therapeutic Studies - Outcome Investigation.

RESUMO Introdução: O teste de função cardiopulmonar é um elemento fundamental no exame físico, e também um indicador elementar corrente para medir a aptidão física. Com o avanço da idade, o sistema cardiopulmonar passará por uma série de mudanças de envelhecimento na morfologia e função. Objetivo: Explorar o efeito do exercício de Tai Chi sobre a função cardiopulmonar de pessoas de meia-idade e idosas. Métodos: Um total de 73, 50-75 anos de idade de 5 áreas em nossa cidade foram recrutados. Foram selecionados 63 sujeitos saudáveis, 37 no grupo de exercícios e 26 no grupo de não-exercício. O ritmo cardíaco, a capacidade pulmonar e a distância de caminhada de 6 minutos de cada sujeito foram medidas em um estado calmo, durante o tempo de recuperação após a caminhada, e 10 minutos após o período de recuperação. Resultados: Em um estado calmo, os praticantes de Tai Chi apresentam uma melhor capacidade pulmonar e uma frequência cardíaca menor do que os não praticantes (p0,05). No tempo de recuperação imediata após a caminhada, o exercício de Tai Chi elevou a capacidade pulmonar mais do que os não-exercitantes (p0,01). Conclusão: O exercício de Tai Chi pode melhorar a adaptabilidade da função cardiopulmonar em pessoas de meia-idade e idosos após o exercício. Nível de evidência: Estudos Terapêuticos - Investigação dos Resultados.

RESUMEN Introducción: La prueba de función cardiopulmonar es un elemento fundamental en el examen físico, y también un indicador elemental actual para medir la aptitud física. Con el avance de la edad, el sistema cardiopulmonar sufrirá una serie de cambios de envejecimiento en su morfología y función. Objetivo: Explorar el efecto del ejercicio de Tai Chi sobre la función cardiopulmonar en personas de mediana y avanzada edad. Métodos: Se reclutó a un total de 73 personas de 50 a 75 años de edad de 5 zonas de nuestra ciudad. Se seleccionó un total de 63 sujetos sanos, 37 en el grupo de ejercicio y 26 en el grupo de no ejercicio. Se midieron la frecuencia cardíaca, la capacidad pulmonar y la distancia recorrida en 6 minutos de cada sujeto en estado de calma, durante el tiempo de recuperación tras la marcha y 10 minutos después del periodo de recuperación. Resultados: En un estado de calma, los practicantes de Tai Chi tenían una mejor capacidad pulmonar y una menor frecuencia cardíaca que los no practicantes (p0,05). En el tiempo de recuperación inmediata tras la marcha, el ejercicio de Tai Chi aumentó la capacidad pulmonar más que los no practicantes (p0,01). Conclusión: El ejercicio de Tai Chi puede mejorar la adaptabilidad de la función cardiopulmonar en personas de mediana y avanzada edad después del ejercicio. Nivel de evidencia: Estudios terapéuticos - Investigación de resultados.

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A maior produtividade na pecuária está correlacionada com a eficiência reprodutiva do rebanho. As biotécnicas da reprodução, principalmente os protocolos de sincronização da ovulação, são de grande importância para otimizar a produção e acelerar o ganho genético em rebanhos de corte e de leite. No entanto, alguns fatores como a categoria animal, o manejo reprodutivo implementado na propriedade e o reprodutor utilizado podem afetar os resultados de fertilidade nos protocolos de IATF. Dessa maneira, algumas estratégias foram desenvolvidas para contornar alguns desafios inerentes a vacas de corte em anestro pós-parto e aumentar a eficiência reprodutiva dessas fêmeas. Dentre as estratégias, destacam-se a utilização de progesterona e a suplementação energética/proteica previamente ao início do protocolo de IATF.(AU)

The reproductive efficiency of the herd is correlated with higher productivity in livestock. Reproduction biotechniques as ovulation synchronization protocols are important to optimize production and accelerate genetic profit in beef and dairy herds. However, some factors such as the animal category, the reproductive management implemented on the farm and the sire used can affect the fertility results in the TAI protocols. In this way, some strategies were developed to overcome some challenges of postpartum anestrus beef cows and to increase the reproductive efficiency of these cows. The use of progesterone and energy/protein supplementation before starting the TAI protocol stand out are the strategies.(AU)

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Diversos fatores impactam os índices reprodutivos em vacas leiteiras, como a produção de leite, o manejo nutricional e o programa reprodutivo implementado. Em vacas leiteiras de alta produção, o maior catabolismo de esteróides, como a progesterona, devem ser levados em consideração ao escolher o tratamento hormonal a ser realizado. Assim, estratégias com a suplementação de progesterona previamente e ao início do protocolo foram desenvolvidas e descritas.(AU)

Milk production, nutritional management and the implemented reproductive program impact reproductive rates in dairy cows. The greater catabolism of steroids such as progesterone in high producing dairy cows must be considered when choosing the hormonal treatment to be used. Thus, strategies with progesterone supplementation before and at the beginning of the protocol were developed and described.(AU)

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ABSTRACT Introduction: Tai chi chuan training claims to not only promote the circulation of internal energy in the body to achieve a preventive and healing effect of diseases, but also to improve static and dynamic body balance. While the former claims are not validable, the question about the effectiveness of improving balance remains valid. Objective: Verify the characteristics of lower limb balance during tai chi chuan practice. Methods: Selected volunteers underwent a bioelectricity testing system via noninvasive surface electromyography to evaluate muscle activity during the exercises. The results were collected, cataloged and statistically work on corresponding graphs according to different content of literature research for objective analysis. Results: The variation of the displacement of the center of gravity was controlled within 0.1M, the most unstable time of the center of gravity was about 0.65s before the start of balance. In temporal terms, it is found that the order of discharge of each muscle tested in the vertical balance and unilateral support was as follows: the tibialis anterior muscle discharges first, the rectus femoris and biceps femoris second, finally gastrocnemius, gluteus medius and gluteus maximus joint discharge almost at the same time. Conclusion: Some benefit is perceived in the validity of improving lateral balance velocity, shortening the action completion time, and improving balance stability, improving the quality of action in practitioners of this exercise modality. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: O treinamento do tai chi chuan alega não só promover a circulação de energia interna no corpo para alcançar um efeito preventivo e curador de doenças, mas também aprimorar o equilíbrio estático e dinâmico corporal. Enquanto as primeiras afirmações não são validáveis, o questionamento sobre a eficácia no aprimoramento do equilíbrio permanece válido. Objetivo: Verificar as características do equilíbrio nos membros inferiores durante a prática do tai chi chuan. Métodos: Voluntários selecionados passaram por um sistema de testes com bioeletricidade via eletromiografia superficial não invasiva para avaliar a atividade muscular durante os exercícios. Os resultados foram coletados, catalogados e estatisticamente trabalhos sobre gráficos correspondentes, de acordo com diferentes conteúdos de pesquisa literária, para análise objetiva. Resultados: A variação do deslocamento do centro gravitacional foi controlada dentro de 0,1M, o tempo mais instável do centro de gravidade foi cerca de 0,65s antes do início do equilíbrio. Em termos temporais, constata-se que a ordem de descarga de cada músculo testado no equilíbrio vertical e apoio unilateral foi a seguinte: o músculo tibial anterior descarrega primeiro, o reto femoral e bíceps femoral em segundo lugar, finalmente conjunto gastrocnêmico, glúteos médios e glúteo máximo descarregam quase ao mesmo tempo. Conclusão: Percebe-se algum benefício na validade de aprimorar a velocidade de balanço lateral, encurtar o tempo de conclusão da ação e melhorar a estabilidade do equilíbrio, melhorando a qualidade da ação em praticantes dessa modalidade de exercício. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: El entrenamiento de Tai chi chuan pretende no sólo promover la circulación de la energía interna en el cuerpo para lograr un efecto preventivo y curativo contra las enfermedades, sino también mejorar el equilibrio corporal estático y dinámico. Mientras que las primeras afirmaciones no son válidas, la pregunta sobre la eficacia de la mejora del equilibrio sigue siendo válida. Objetivo: Verificar las características del equilibrio de los miembros inferiores durante la práctica del tai chi chuan. Métodos: Los voluntarios seleccionados se sometieron a un sistema de pruebas de bioelectricidad mediante electromiografía de superficie no invasiva para evaluar la actividad muscular durante los ejercicios. Los resultados fueron recogidos, catalogados y trabajados estadísticamente en los gráficos correspondientes según los diferentes contenidos de la investigación literaria para su análisis objetivo. Resultados: La variación del desplazamiento del centro de gravedad se controló dentro de 0,1M, el tiempo más inestable del centro de gravedad fue de unos 0,65s antes del inicio del equilibrio. En términos temporales, se encontró que el orden de descarga de cada músculo probado en el equilibrio vertical y el apoyo unilateral fue el siguiente: el músculo tibial anterior descarga primero, el recto femoral y el bíceps femoral segundo, finalmente el gastrocnemio, el glúteo medio y el glúteo mayor descargan casi al mismo tiempo. Conclusión: Se percibe algún beneficio en la validez de mejorar la velocidad de equilibrio lateral, acortar el tiempo de finalización de la acción y mejorar la estabilidad del equilibrio, mejorando la calidad de la acción en los practicantes de esta modalidad de ejercicio. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

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ABSTRACT Introduction Practicing sports can strengthen the body both physically and mentally. Although Tai Chi can help injured athletes to recover quickly and shorten the return to sports training and competition, there are still no detailed studies about its effectiveness in lower limb injuries in young people. Objective Analyze the effects of Tai Chi in upper limb sports injuries rehabilitation on young people. Methods 91 patients with sports injuries are selected and randomly divided into a control group (n=44) and an experimental group (n=47). The control group received regular exercises for rehabilitation, while the experimental group used Tai Chi exercises. Mathematical statistics are used to analyze the effects before and after the activities. Results There are considerable statistical differences in the effects of exercise on the two groups of patients. Conclusion Tai Chi exercise can help young people recover from upper limb sports injuries. Evidence level II; Therapeutic Studies - Investigating the results.

RESUMO Introdução Praticar esportes pode fortalecer o corpo tanto física quanto mentalmente. Apesar do Tai Chi poder ajudar os atletas lesionados a se recuperarem rapidamente e abreviar o retorno ao treino esportivo e a competição ainda não há estudos detalhados sobre sua eficácia nas lesões de membros superiores em jovens. Objetivo Analisar os efeitos na reabilitação esportiva de jovens lesionados nos membros superiores sob os fundamentos do Tai Chi. Métodos Foram selecionados 91 pacientes com lesões esportivas que foram divididos aleatoriamente em grupo controle (n=44) e grupo experimental (n=47). O grupo controle recebeu exercícios regulares para reabilitação enquanto o grupo experimental utilizou exercícios de Tai Chi. Estatísticas matemáticas foram empregadas para analisar os efeitos antes e depois das atividades. Resultados Existem diferenças estatísticas consideráveis nos efeitos do exercício nos dois grupos de pacientes. Conclusão O exercício de Tai Chi pode auxiliar os jovens a recuperarem-se de lesões esportivas nos membros superiores. Nível de evidência II; Estudos terapêuticos - Investigação de resultados.

RESUMEN Introducción La práctica del deporte puede fortalecer el cuerpo tanto física como mentalmente. Aunque el Tai Chi puede ayudar a los atletas lesionados a recuperarse rápidamente y a acortar la vuelta al entrenamiento y la competición deportiva, todavía no hay estudios detallados sobre su eficacia en las lesiones de las extremidades superiores en los jóvenes. Objetivo Analizar los efectos en la rehabilitación deportiva de los jóvenes con lesiones en las extremidades superiores bajo los fundamentos del Tai Chi. Métodos Se seleccionaron 91 pacientes con lesiones deportivas que se dividieron aleatoriamente en el grupo de control (n=44) y el grupo experimental (n=47). El grupo de control recibió ejercicios regulares de rehabilitación mientras que el grupo experimental utilizó ejercicios de Tai Chi. Se utilizaron estadísticas matemáticas para analizar los efectos antes y después de las actividades. Resultados Existen considerables diferencias estadísticas en los efectos del ejercicio en los dos grupos de pacientes. Conclusión El ejercicio de Tai Chi puede ayudar a los jóvenes a recuperarse de las lesiones deportivas de las extremidades superiores. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.

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ABSTRACT Introduction: Exercise can retard the effects of aging and improve the physical function of the elderly. Tai Chi is a widespread exercise practice among the elderly in China. Although studies show the positive effects of Tai Chi practice, there is no consensus about compared studies. Objective: Evaluate the impact of regular Tai Chi exercise on neuromuscular stability in the lower limbs of elderly people, comparing the results of practitioners between sedentary and walking elderly groups. Methods: Twenty-two Tai Chi practitioners were selected, with a mean age of 59.3±3.5 years and a mean practice time of 18.4±13.2 years. This experiment mainly tests the balance ability compared to individuals practicing walking and other sedentary individuals. Results: The muscle strength of the knee flexors and extensors in the Tai Chi group was significantly greater than in the sedentary group (p=0.001 to 0.00160°/sec; P=0.002 to 60°/sec extensors; p=0.002 to 120°/sec; 120°/sec flexors, p=0.003). Similarly, there was a significant difference in muscle strength between the Tai Chi group and the walking group (the P values of the flexors and extensors at both speeds were less than 0.001). Conclusion: Tai Chi, as a regular exercise, can increase muscle strength of the general knee flexors and extensors and improve the neuromuscular stability of lower limbs in the elderly. Evidence Level II; Therapeutic Studies - Investigating the result.

RESUMO Introdução: Exercícios podem retardar os efeitos do envelhecimento e melhorar a função física dos idosos. O Tai Chi é uma prática popular de exercício entre os idosos na China. Embora haja estudos que evidenciem os efeitos positivos da prática de Tai Chi, ainda não há um consenso sobre os estudos comparados. Objetivo: Avaliar o efeito do exercício regular de Tai Chi sobre a estabilidade neuromuscular nos membros inferiores em idosos, comparando os resultados dos praticantes entre grupos idosos de sedentários e praticantes de caminhada. Métodos: Foram selecionados vinte e dois praticantes de Tai Chi, com idade média de 59,3±3,5 anos com tempo médio de prática de 18,4±13,2 anos. Este experimento testa principalmente a capacidade de equilíbrio comparando aos indivíduos que praticam caminhada e outros sedentários. Resultados: A força muscular dos flexores e extensores do joelho no grupo Tai Chi foi significativamente maior do que no grupo sedentário (p=0,001 a 0,00160°/s; P=0,002 a extensores de 60°/s; p=0,002 a 120°/s; flexores de 120°/seg, p=0,003). Similarmente, houve uma diferença significativa na força muscular entre o grupo Tai Chi e o grupo de caminhada (os valores P dos flexores e extensores em ambas as velocidades foram inferiores a 0,001). Conclusão: Exercícios regulares, como o Tai Chi, podem alterar a força muscular dos flexores e extensores gerais do joelho, e melhorar a estabilidade neuromuscular dos idosos nos membros inferiores. Nível de evidência II; Estudos Terapêuticos - Investigação de Resultados.

RESUMEN Introducción: Los ejercicios pueden retrasar los efectos del envejecimiento y mejorar la función física de las personas mayores. El Tai Chi es una práctica de ejercicio muy popular entre las personas mayores de China. Aunque hay estudios que demuestran los efectos positivos de la práctica del Tai Chi, todavía no hay consenso sobre los estudios comparativos. Objetivo: Evaluar el efecto del ejercicio regular de Tai Chi en la estabilidad neuromuscular de las extremidades inferiores en ancianos, comparando los resultados de los practicantes entre grupos de ancianos sedentarios y caminantes. Métodos: Se seleccionaron 22 practicantes de Tai Chi, con una edad media de 59,3±3,5 años y un tiempo medio de práctica de 18,4±13,2 años. Este experimento pone a prueba principalmente la capacidad de equilibrio en comparación con los individuos que practican caminata y otros sedentarios. Resultados: La fuerza muscular de los flexores y extensores de la rodilla en el grupo de Tai Chi fue significativamente mayor que en el grupo sedentario (p=0,001 a 0,00160°/seg; p=0,002 a 60°/seg extensores; p=0,002 a 120°/seg; 120°/seg flexores, p=0,003). Del mismo modo, hubo una diferencia significativa en la fuerza muscular entre el grupo de Tai Chi y el grupo de caminantes (los valores P de los flexores y extensores a ambas velocidades fueron inferiores a 0,001). Conclusión: Los ejercicios regulares, como el Tai Chi, pueden modificar la fuerza muscular de los flexores y extensores generales de la rodilla y mejorar la estabilidad neuromuscular de los ancianos en las extremidades inferiores. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.