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OBJECTIVE: To investigate the acute effects of ingesting a beverage containing guarana (Paullinia cupana) seed powder on performance during field tests related to physical capacities that are determinants of soccer performance, such as lower limb power, sprint, agility, and the capacity to carry out intermittent exercise. METHODS: The study was conducted using a randomized, crossover, and counterbalanced design, with a beverage containing guarana or placebo administered in a double-blind manner. Twenty-seven under-17 soccer players of a professional soccer club performed a battery of tests 60 min after the ingestion of guarana (3 g of the fruit seed powder) or placebo. Trials were performed with a 7-day washout period. The battery of tests included a countermovement jump test, sprints of 10 and 20 m, an Illinois agility test, and a Yo-Yo Intermittent Recovery Test level 1 (YYIR1). RESULTS: Guarana ingestion did not improve countermovement jump, sprints, or agility (p > 0.05). However, guarana ingestion increased the distance covered in the YYIR1, compared with placebo ingestion (p = 0.01). CONCLUSION: Acute ingestion of guarana improves the capacity to perform intermittent exercise in soccer players but seems to be ineffective to improve lower limb power, sprint, and agility.

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Introducción: La celiaquía es una patología multisistémica con base autoinmune que provoca una reacción a la proteína gluten encontrada en alimentos como o trigo, centeno, triticale, cebada, espelta y avena. Los síntomas más comunes de la celiaquía son la pérdida de peso, pérdida de apetito y fatiga general entre otros. A consecuencia de estos síntomas el rendimiento deportivo puede verse afectado. Objetivo: Para comprender como la celiaquía impacta en el rendimiento de los deportistas, el objetivo de este estudio es realizar una revisión sistemática relacionada con el rendimiento deportivo en personas celíacas. Materiales y métodos: Para ello, se utilizó la siguiente frase final de búsqueda: "Celiac" AND "Sport" AND "Performance", que fue introducida por igual en las bases de datos: Web of Science, Scopus y PubMed. Resultados: Los resultados muestran la existencia de escasos documentos relacionados con el objeto de estudio (n=11), dónde se muestra una variabilidad de tipos de diseño en los trabajos seleccionados. Por otro lado, se extrae que la única solución para mantener un adecuado rendimiento deportivo en una persona celiaca es llevar una dieta libre de gluten de por vida. Conclusiones: Los documentos seleccionados subrayan la importancia de que los deportistas con enfermedad celiaca mantengan una dieta sin gluten de manera constante a lo largo de su vida. Debido a la escasez de estudios relacionados con la temática, se recomienda aumentar el número de investigaciones relacionadas con el objeto de estudio, con la finalidad de mejorar los estilos y hábitos de vida de los deportistas celíacos(AU)

Introduction: Celiac disease is a multisystem autoimmune disorder that triggers a reaction to the protein gluten found in foods such as wheat, rye, triticale, barley, spelt, and oats. The most common symptoms of coeliac disease are weight loss, loss of appetite and general fatigue among others. As a result of these symptoms, athletic performance may be affected. Objetive: To understand how celiac disease impacts athletes' performance, the aim of this study is to conduct a systematic review related to sports performance in individuals with celiac disease. Materials and method: To do so, the following search phrase was used: "Celiac" AND "Sport" AND "Performance", which was entered equally in the following databases: Web of Science, Scopus and PubMed. Results: The results show the existence of few documents related to the object of study (n=11), where a variability of design types is shown in the selected works. On the other hand, the only solution to maintain adequate sports performance in a person with coeliac disease is to follow a gluten-free diet for life. Conclusions: The selected documents emphasize the importance of athletes with celiac disease maintaining a gluten-free diet consistently throughout their lives. Due to the scarcity of studies related to this topic, it is recommended to increase the number of research studies on this subject in order to improve the lifestyles and habits of athletes with celiac disease(AU)

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INTRODUCTION: The aim of this study was to evaluate the acute effects of Pilates exercises on flexibility and performance in practitioners of an extreme conditioning program (ECP). The hypothesis adopted was that Pilates could activate deeper muscles and improve the stability of core muscles. METHODS: This was an observational cross-sectional study with individuals practicing an ECP submitted to a Pilates method (PM) exercise session. The Wells bench test was used to assess flexibility, while performance was evaluated using the Wall Ball exercise commonly performed by ECP practitioners. The perception of effort was measured using the Borg scale. RESULTS: A single session of PM exercises was able to significantly improve flexibility immediately after the exercises (p < 0.001) and performance in one of the movements of the ECP (p < 0.001), as well as decrease the perception of effort. CONCLUSION: An acute intervention with Pilates exercises promoted improvement in performance of the CrossFit Wall Ball exercise.

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Objective: Traditionally, perfectionism has been regarded as a commendable trait in the realm of sports and exercise. However, recent research has uncovered a paradoxical aspect of perfectionism in these domains. This umbrella review seeks to offer a comprehensive overview of the intricate role that perfectionism plays in sport and exercise performance. Method : As an umbrella review, we systematically explored three widely used scientific databases-PubMed, Scopus, and ISI-to identify relevant systematic reviewes and meta-analyses investigating the relationship between perfectionism and sports performance. Results: After careful evaluation, eight studies met our inclusion criteria and were included in the study. These eight eligible studies comprised five systematic reviews and three systematic review and meta-analysis publications. These publications have explored the correlation between perfectionism and sports performance in teenager and adult populations, as well as professional and amateur athletes. Most of the original articles included in these studies had a cross-sectional design and some of them were longitudinal research. All reviewed articles reported a significant correlation between perfectionism and sports performance, regardless of gender and age. In general, the main consensus of these studies is a moderate to high positive correlation between perfectionistic strivings and sports performance, as well as a moderate to high negative correlation between perfectionistic concerns and sports performance. Conclusion: In summary, perfectionism exhibits both positive and negative effects on athlete outcomes. Maladaptive perfectionism is linked to adverse consequences, while adaptive perfectionism can yield positive effects. Promisingly, psychological interventions such as mindfulness-based approaches and ACT-based interventions show potential in reducing perfectionism and enhancing athlete outcomes. Future research should delve deeper into the intricate relationship between perfectionism and athlete performance and continue to devise interventions that counteract the detrimental effects of perfectionistic tendencies.

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This study aimed to compare the intensity of deoxygenated haemoglobin concentration ([HHb]) and tissue saturation index (TSI) breakpoints ([HHb]-BP and TSI-BP) with maximal lactate steady state (MLSS) and critical power (CP), and to describe their association with 2000-m rowing ergometer performance. Fourteen male rowers performed on a rowing ergometer: I) a discontinuous incremental test with 3-min stages (INC3); II) a continuous incremental test with 1-min stages (INC1); III) constant workload tests to determine MLSS; and IV) performance tests of 500 m, 1000 m, 2000 m and 6000 m to determine CP.CP (257 ± 39 W; 3.79 ± 4.1 L · min-1) was higher than [HHb]-BP3 (205 ± 26 W; 3.48 ± 2.9 L · min-1), [HHb]-BP1 (207 ± 27 W; 3.27 ± 3.2 L · min-1), and TSI-BP3 (218 ± 31 W; 3.51 ± 3.0 L · min-1), but not higher than TSI-BP1 (222 ± 34 W; 3.43 ± 3.2 L · min-1). MLSS (187 ± 26 W; 3.33 ± 3.2 L · min-1) was lower than TSI-BP3 and TSI-BP1 for power output, but not different in any comparison for ⩒O2. The limits of agreement for power output and ⩒O2 suggest poor agreement among these thresholds. The low level of agreement compromises the use of [HHb]-BP and TSI-BP for estimating MLSS and CP; therefore, these thresholds should not be considered interchangeable.

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ABSTRACT Introduction: The women are increasingly seeking to be physically active or even choose sports as their professional activity as in the years, the number of Summer Olympic athletes has equaled that of men. Due to this growing female participation in sports, the study of female and male differences has become increasingly relevant in the involvement of the academic world. Objective: A review on this subject, stimulating more research, and making knowledge reach more women is a major objective of this literature review. We understand that more studies are needed to understand pathophysiology, prevention, and treatment. Methods: The study design was a retrospective narrative review of the relationship between breasts and physical activity, exercise, and sports. Results: Several anthropometric and physiological differences have been established; however, the volume and shape of the female breast is peculiar but still little studied. The specificity of female breasts are conditions that can exert sports performance and contribute to distancing women from physical activity practice. Conclusion: Possible conditions of female breasts in sports are exercise-induced mastalgia, breast injury, nipple injury, pregnancy, and many others. We understand that more studies are needed to understand pathophysiology, prevention, and treatment. Level of Evidence II; Retrospective Narrative Review.

RESUMEN Introducción: Cada vez son más las mujeres que buscan ser físicamente activas e incluso eligen el deporte como actividad profesional, ya que en los últimos años el número de atletas olímpicas de verano ha igualado al de los hombres. Debido a esta creciente participación femenina en el deporte, el estudio de las diferencias entre hombres y mujeres se ha vuelto cada vez más relevante en el ámbito académico. Objetivo: Realizar una revisión sobre este tema, estimular nuevas investigaciones y hacer que el conocimiento llegue a más mujeres constituye el principal objetivo de esta revisión bibliográfica. Métodos: El diseño del estudio fue una revisión narrativa retrospectiva de la relación entre mamas y actividad física, ejercicio y deporte. Resultados: Se han establecido varias diferencias antropométricas y fisiológicas; sin embargo, el volumen y la forma de la mama femenina son peculiares, pero aún poco estudiados. La especificidad de las mamas femeninas es un factor que puede perjudicar el rendimiento deportivo y contribuir a alejar a las mujeres de la actividad física. Conclusión: Las posibles afecciones de las mamas femeninas en el deporte son la mastalgia inducida por el ejercicio, las lesiones mamarias, las lesiones del pezón, el embarazo y muchas otras. Entendemos que se necesitan más estudios para comprender la fisiopatología, la prevención y el tratamiento. Nivel de Evidencia II; Revisión Narrativa Retrospectiva.

RESUMO Introdução: As mulheres estão cada vez mais buscando ser fisicamente ativas e até escolhendo o esporte como sua atividade profissional, pois, nos últimos anos, o número de atletas olímpicas de verão equiparou-se ao dos homens. Devido a essa crescente participação feminina nos esportes, o estudo sobre as diferenças entre homens e mulheres tem se tornado cada vez mais relevante no âmbito acadêmico. Objetivo: Uma revisão sobre esse assunto, estimulando mais pesquisas e fazendo com que o conhecimento chegue a mais mulheres constitui o principal objetivo desta revisão da literatura. Métodos: O desenho do estudo foi uma revisão narrativa retrospectiva da relação entre mamas e atividade física, exercícios e esportes. Resultados: Várias diferenças antropométricas e fisiológicas foram estabelecidas; entretanto, o volume e a forma da mama feminina são peculiares, mas ainda pouco estudados. A especificidade das mamas femininas é um fator que pode prejudicar o desempenho esportivo e contribuir para afastar as mulheres da prática de atividade física. Conclusão: As possíveis condições das mamas femininas no esporte são mastalgia induzida pelo exercício, lesão mamária, lesão do mamilo, gravidez e muitas outras. Entendemos que são necessários mais estudos para compreender a fisiopatologia, a prevenção e o tratamento. Nível de Evidência II; Revisão Narrativa Retrospectiva.

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RESUMEN El objetivo de este estudio fue comprobar el efecto del entrenamiento de las figuras a través de ejercicios especiales durante el período preparatorio. Las participantes fueron 13 nadadoras artísticas con edades de 9 a 12 años. Se realizó un pre-experimento pretest-postest para un solo grupo y se aplicó la prueba no paramétrica de Wilcoxon. En cuanto a los resultados del postest con respecto al pretest en la figura pierna de ballet recta, en los indicadores diseño Z (-2,536b) y control Z (-2,539b) se muestra un mayor efecto del entrenamiento y fue de igual manera en la figura barracuda Z (-2,536b). Se puede afirmar, que la propuesta resalta su funcionabilidad.

ABSTRACT The aim of this study was to test the effect of figure training through special exercises during the preparatory period. The participants were 13 artistic swimmers aged 9 to 12 years. A pretest-posttest pre-experiment was performed for a single group and the Wilcoxon nonparametric test was applied. Regarding the results of the post-test with respect to the pretest in the figure straight ballet leg, in the indicators design Z (-2.536b) and control Z (-2.539b) a greater effect of the training is shown and it was the same way in the figure barracuda Z (-2.536b). It can be affirmed that the proposal highlights its functionality.

RESUMO O objetivo deste estudo foi testar o efeito do treino da figura através de exercícios especiais durante o período preparatório. Os participantes foram 13 nadadores artísticos com idades compreendidas entre os 9 e os 12 anos. Foi realizado um pré-experimento pré-teste-pós-teste para um único grupo e foi aplicado o teste não paramétrico de Wilcoxon. No que diz respeito aos resultados do pós-teste em relação ao pré-teste na figura da perna de ballet reta, no desenho de indicadores Z (-2,536b) e no controlo Z (-2,539b), verifica-se um maior efeito do treino, o mesmo acontecendo na figura da barracuda Z (-2,536b). Pode-se afirmar, que a proposta evidencia sua funcionalidade.

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The present systematic review aimed to evaluate the effect of probiotic supplementation on gut microbiota and sport performance in athletes and physically active individuals. This review followed the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (P RISMA). The search had no time limits and included the following databases: MEDLINE, LILACS, Scopus, Web of Science, Cochrane, and SP ORT Discus. The risk of bias was assessed through the updated version of the Cochrane tool for assessing the risk of bias in randomized trials (RoB 2). Nine randomized clinical trials (RCTs) were included, accounting for 216 participants. Of these, seven studies found positive results on sport performance. Additionally, some studies showed significant decrease in biochemical parameters linked to inflammation. It was also observed direct results in the microbiota composition of the participants, such as an increase in the abundance of probiotics and a decrease in certain pathogenic bacteria. Therefore, the use of probiotics showed improvement in inflammatory biomarkers and oxidative stress, which indirectly may contribute to the improvement of sport performance. However, the majority of the studies presented a high risk of bias, which impair the reproducibility of the results. While the field of probiotic supplementation and sport performance is emerging, the promising results from this systematic review suggest that further investigation through larger and more robust randomized clinical trials can provide valuable insights for athletes and their performance.

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El objetivo del presente trabajo es analizar el desempeño deportivo de la delegación chilena en los Juegos Panamericanos celebrados entre los años 1951 y 2023, haciendo uso de datos retrospectivos y proyectivos a través de series temporales de tiempo. Para esto se empleó un diseño cuantitativo, no experimental y longitudinal de tendencias y un método de suavización exponencial simple, que utiliza promedios históricos y que permite realizar una predicción o comportamiento futuro basado en una media ponderada de los valores actuales y de los pasados. A partir de los resultados obtenidos, fue posible concluir que, en las últimas décadas, la ubicación de Chile en el ranking de los Juegos Panamericanos se ha estabilizado en torno a un onceavo lugar, posición pronosticada para Santiago 2023. Manteniéndose condiciones similares, el desempeño deportivo general y específico no tendría un quiebre exponencial de la tendencia y los resultados no resultan favorables, específicamente en lo que respecta a la obtención de medallas de oro y la posición general de la delegación.

The objective of this paper is to analyze the sports performance of the Chilean delegation in the Pan American Games held between 1951 and 2023, using retrospective and projective data through time series. For this purpose, a quantitative, non-experimental and longitudinal design of trends and a simple exponential smoothing method was used, which uses historical averages and allows a prediction or future behavior based on a weighted average of current and past values. From the results obtained, it was possible to conclude that, in recent decades, Chile's position in the Pan American Games ranking has stabilized around eleventh place, a position predicted for Santiago 2023. Maintaining similar conditions, the general and specific sporting performance would not have an exponential break in the trend and the results are not favorable, specifically in terms of obtaining gold medals and the overall position of the delegation.

O objetivo deste artigo é analisar o desempenho esportivo da delegação chilena nos Jogos Pan-Americanos realizados entre 1951 e 2023, usando dados retrospectivos e projetivos por meio de séries temporais. Para isso, foi utilizado um desenho quantitativo, não experimental e longitudinal de tendências e um método de suavização exponencial simples, que utiliza médias históricas e permite uma previsão do comportamento futuro com base em uma média ponderada dos valores atuais e passados. Com base nos resultados obtidos, foi possível concluir que, nas últimas décadas, a posição do Chile no ranking dos Jogos Pan-Americanos se estabilizou em torno do 11º lugar, posição prevista para Santiago 2023. Mantendo-se condições semelhantes, o desempenho esportivo geral e específico não teria uma quebra exponencial na tendência e os resultados não são favoráveis, especificamente em termos de conquista de medalhas de ouro e posição geral da delegação.

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Los eSports o deportes electrónicos han ganado relevancia mundial, pero en Latinoamérica hay una brecha de desarrollo respecto a otras regiones. El objetivo de esta investigación consistió en analizar la influencia de la cultura organizacional, en el rendimiento de los equipos de eSports de Valorant que participaron en el torneo denominado 88 CUP. El torneo se desarrolló del 19 de febrero al 30 de abril de 2023, con la participación de 35 equipos pertenecientes a Ecuador, Colombia, México, Guatemala, Venezuela, Costa Rica, Cuba, El Salvador, Honduras, Panamá, Perú y República Dominicana. Se empleó el instrumento de Cameron y Quinn, adaptado por Ibarra (2019) para evaluar la cultura organizacional, y para el rendimiento deportivo se recopilaron datos de la puntuación media de combate en el torneo 88 CUP; través de esta puntuación, se calculó el índice de rendimiento deportivo en una escala de 0 a 100. El estudio de datos se realizó con el análisis de componentes principales no lineales y ecuaciones estructurales. Los resultados mostraron un promedio de rendimiento deportivo de 25 sobre 100 puntos y apenas el 10 % de los equipos alcanzaron un rendimiento superior a 70. Además, la cultura adhocrática y clan prevalecen en los equipos estudiados. Se estableció un modelo de relación causal de la cultura organizacional en el rendimiento deportivo, donde las dimensiones adhocráticas, jerárquica y de mercado tuvieron un impacto significativo y positivo; en tanto, la dimensión clan tuvo una influencia significativa y negativa en el rendimiento deportivo.

Os eSports ou esportes eletrônicos ganharam relevância global, mas na América Latina existe uma lacuna de desenvolvimento em comparação com outras regiões. O objetivo desta pesquisa foi analisar a influência da cultura organizacional no desempenho das equipes de Valorant eSports que participaram do torneio denominado 88 CUP. O torneio aconteceu de 19 de fevereiro a 30 de abril de 2023, com a participação de 35 seleções do Equador, Colômbia, México, Guatemala, Venezuela, Costa Rica, Cuba, El Salvador, Honduras, Panamá, Peru e República Dominicana. Para avaliar a cultura organizacional foi utilizado o instrumento Cameron e Quinn, adaptado por Ibarra (2019), e para o desempenho esportivo foram coletados dados sobre a pontuação média de combate no torneio 88 CUP; por meio dessa pontuação, foi calculado o índice de desempenho esportivo em uma escala de 0 a 100. O estudo dos dados foi realizado com análise de componentes principais não lineares e equações estruturais. Os resultados mostraram um desempenho esportivo médio de 25 em 100 pontos e apenas 10% das equipes obtiveram desempenho superior a 70. Além disso, a cultura adocrática e de clã prevalece nas equipes estudadas. Foi estabelecido um modelo de relação causal da cultura organizacional sobre o desempenho desportivo, onde as dimensões adocrática, hierárquica e mercadológica tiveram um impacto significativo e positivo; entretanto, a dimensão do clã teve uma influência significativa e negativa no desempenho desportivo.

eSports or electronic sports have gained global relevance, but in Latin America there is a development gap compared to other regions. The objective of this research was to analyze the influence of organizational culture on the performance of Valorant eSports teams that participated in the tournament called 88 CUP. The tournament took place from February 19 to April 30, 2023, with the participation of 35 teams from Ecuador, Colombia, Mexico, Guatemala, Venezuela, Costa Rica, Cuba, El Salvador, Honduras, Panama, Peru and the Dominican Republic. The Cameron and Quinn instrument, adapted by Ibarra (2019), was used to evaluate organizational culture, and for sports performance, data was collected on the average combat score in the 88 CUP tournament; through this score, the sports performance index was calculated on a scale from 0 to 100. The data study was carried out with the analysis of non-linear principal components and structural equations. The results showed an average sports performance of 25 out of 100 points and only 10% of the teams achieved a performance greater than 70. In addition, the adhocratic and clan culture prevail in the teams studied. A causal relationship model of organizational culture on sports performance was established, where the adhocratic, hierarchical and market dimensions had a significant and positive impact; meanwhile, the clan dimension had a significant and negative influence on sports performance.

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El proyecto "Estudio de patrones de lateralidad de atletas elites de Cuba" tiene como objetivo el diagnóstico, la caracterización y la valoración de los patrones de lateralidad de atletas activos y retirados con altos resultados deportivos, pero hasta el momento se adolece de una profundización en la utilidad que puede tener la lateralidad en la preparación técnico-táctica en los deportes de combate, por lo que el objetivo de este artículo fue sistematizar las principales investigaciones relacionadas con la utilización de la lateralidad en estos deportes. Para ello, se emplearon los métodos inductivo-deductivo, análisis-síntesis y revisión bibliográfica con el fin de determinar los antecedentes e interpretar las principales investigaciones referentes sobre esta temática. Se concluyó que entre los principales aspectos abordados estuvieron: las ventajas competitivas de los deportistas zurdos, el volumen técnico que se realizó en competiciones, la caracterización del deportista de acuerdo a sus preferencias laterales y cómo estas influyen en el rendimiento deportivo. Sin embargo, no se apreció estudio alguno referido a la utilización de los patrones de la lateralidad en la preparación técnico-táctica en los deportes de combate, lo que devino en carencia, para el estudio de estas disciplinas deportivas.

O projeto "Estudo dos padrões de lateralidade de atletas de elite em Cuba" tem como objetivo diagnosticar, caracterizar e avaliar os padrões de lateralidade de atletas ativos e aposentados com altos resultados esportivos, mas até agora não houve um estudo aprofundado da utilidade que a lateralidade pode ter na preparação técnico-táctica em esportes de combate, portanto o objetivo deste artigo foi sistematizar as principais pesquisas relacionadas com o uso da lateralidade nestes esportes. Para este fim, foram utilizados os métodos indutivo-deducativo, análise-síntese e revisão bibliográfica a fim de determinar os antecedentes e interpretar as principais pesquisas sobre este assunto. Concluiu-se que entre os principais aspectos abordados estavam: as vantagens competitivas dos atletas canhotos, o volume técnico realizado nas competições, a caracterização do atleta de acordo com suas preferências laterais e como estas influenciam o desempenho esportivo. Entretanto, não foi encontrado nenhum estudo sobre o uso de padrões de lateralidade na preparação técnico-táctica em esportes de combate, o que resultou em uma falta de estudo destas disciplinas esportivas.

The project "Study of laterality patterns of elite athletes in Cuba" has as its objective the diagnosis, characterization and assessment of laterality patterns of active and retired athletes with high sports results, but so far it lacks a deepening in the usefulness that laterality can have in the technical-tactical preparation in combat sports, so the objective of this article was to systematize the main researches related to the use of laterality in these sports. For this, the inductive-deductive, analysis-synthesis and bibliographic review methods were used in order to determine the background and interpret the main reference research on this subject. It was concluded that among the main aspects addressed were: the competitive advantages of left-handed athletes, the technical volume that was carried out in competitions, the characterization of the athlete according to their lateral preferences and how they influence sports performance. However, no study was observed regarding the use of laterality patterns in technical-tactical preparation in combat sports, which became a lack, for the study of these sports disciplines.

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Prior research has suggested relevance to anthropometric variance of youth athletes at various stages of their maturation, and prior studies of youth players' soccer skills have failed to consider their interdependent interactions during play. Accordingly, to address both of these separate research omissions, we aimed in this study to analyze the relationships between young (U-13 and U-15 groups) soccer players' bone age and body size indicators and centrality measures of their pass interactions during small sided games. We included young 81 athletes (M age = 14.4, SD = 1.1 years) from whom we took anthropometric measurements of body mass, height, and trunk-cephalic height and obtained their bone age using the Tanner-Whitehouse 3 classification method. We also filmed small-sided games in the goal keeper/three player (GK3-3GK) format to analyze the centrality of their passing actions on the following measures: degree of centrality, closeness of centrality, degree of prestige, and proximity of prestige. There were no group differences in the prominence of passing actions across these three measures (tmean = -3.13; p > .05). Canonical correlations of these relationships were significant only in the U-13 group, in which centrality in passing actions was related to body size (r = 0.71; R2 = 0.21; ʌ = 0.28; p = .03). U-13 players who were physically larger and who presented higher bone age showed centralized main passing actions.

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BACKGROUND: Plyometric training can be performed through many types of exercises involving the stretch-shortening cycle in lower limbs. In the last decades, a high number of studies have investigated the effects of plyometric training on several outcomes in different populations. OBJECTIVES: To systematically review, summarize the findings, and access the quality of published meta-analyses investigating the effects of plyometric training on physical performance. DESIGN: Systematic umbrella review of meta-analyses. DATA SOURCES: Meta-analyses were identified using a systematic literature search in the databases PubMed/MEDLINE, Scopus, SPORTDiscus, Web of Science, Cochrane Library and Scielo. ELIGIBILITY CRITERIA FOR SELECTING META-ANALYSES: Meta-analyses that examined the effects of plyometric training on physical fitness in different populations, age groups, and sex. RESULTS: Twenty-nine meta-analyses with moderate-to-high methodological quality were included in this umbrella review. We identified a relevant weakness in the current literature, in which five meta-analyses included control group comparisons, while 24 included pre-to-post-effect sizes. Trivial-to-large effects were found considering the effects of plyometric training on physical performance for healthy individuals, medium-trivial effects for the sports athletes' groups and medium effects for different sports athletes' groups, age groups, and physical performance. CONCLUSION: The available evidence indicates that plyometric training improves most related physical fitness parameters and sports performance. However, it is important to outline that most meta-analyses included papers lacking a control condition. As such, the results should be interpreted with caution. PROSPERO number: CRD42020217918.

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Our aim in this study was to compare performance adaptations based on tactile or sonorous stimuli in para-judo athletes with congenital or acquired visual impairment. Twenty judo athletes with a type of visual impairment performed both the adapted Special Judo Fitness Test (SJFT) with tactile and sonorous stimuli and the standard SJFT. We used two-way ANOVA with repeated measurements in the second factor to compare the SJFT performance of athletes with visual impairment between two groups (acquired or congenital) in the two test situations, with the level of significance set at p < .05. Both groups of participants performed better on the adapted SJFT with tactile and sonorous stimuli compared to the standard condition on number of throws (p = .029 and p < .001) and showed lower final and post 1-minute heart rates (HR) (p < .05). There were no group differences in performance on any SJFT adaptations (p > .05). Thus, both SJFT adaptations (tactile and sonorous stimuli) enhanced the judo-specific performance of athletes with both acquired and congenital visual impairments. However, athletes with either origin of impairment showed a better HR in the adaptive tactile stimuli testing compared to the standard SJFT testing condition.

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The aim of this systematic review was to investigate the effect of specific sprint and vertical jump training interventions on transfer of speed-power parameters. The data search was carried out in three electronic databases (PubMed, SCOPUS, and SPORTDiscus), and 28 articles were selected (13 on vertical jump training and 15 on sprint training). We followed the PRISMA criteria for the construction of this systematic review and used the Physiotherapy Evidence Database (PEDro) scale to assess the quality of all studies. It included studies with a male population (athletes and nonathletes, n = 512) from 18 to 30 years old who performed a vertical jump or sprint training intervention. The effect size was calculated from the values of means and SDs pre- and posttraining intervention. The percentage changes and transfer of training effect were calculated for vertical jump training and sprint training through measures of vertical jump and sprint performance. The results indicated that both training interventions (vertical jump training and sprint training) induced improvements in vertical jump and linear sprint performance as well as transfer of training to speed-power performance. However, vertical jump training produced greater specific and training transfer effects on linear sprint than sprint training (untrained skill). It was concluded that vertical jump training and sprint training were effective in increasing specific actions of vertical jump and linear sprint performance, respectively; however, vertical jump training was shown to be a superior alternative due to the higher transfer rate.

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ABSTRACT Introduction: The Pilates is a training method that aims to improve body awareness for movement re-education, bringing muscular and mental balance. It is believed that these benefits can effectively improve the flexibility of female university aerobics students. Methods: 90 female college students in the optional aerobics course were selected and divided into two groups. Data from the experimental and control groups were evaluated for comparison before and after the experiment. The aerobic exercises of the two groups of female university aerobics students were scored, aiming to compare and explore which training method was more effective. Results: The baseline time and pace score in the Pilates intervention was changed from 2.35±0.71 to 2.55±0.76, a movement set changed from 3.86±0.98 to 4.01±1.07, movement performance from 1.67±0.61 to 1.72±0.57, and foot skills from 1.40±0.48 to 1.41±0.50. The mean aerobic movement performance score changed from 62.45 to 80.53, an increase of 18.08 points. Conclusion: The Pilates training can effectively improve the aerobic performance of female university students. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: O Pilates é um método de treinamento que visa trabalhar a consciência corporal para reeducação do movimento, trazendo equilíbrio muscular e mental. Acredita-se que esses benefícios possam efetivamente melhorar a flexibilidade das estudantes universitárias de aeróbica. Objetivo: Avaliar os efeitos do treinamento baseado em pilates sobre o desempenho esportivo de estudantes universitárias. Métodos: 90 estudantes universitárias femininas do curso opcional de aeróbica foram selecionadas e divididas em dois grupos. Os dados do grupo experimental e do grupo de controle foram avaliados para comparação antes e depois do experimento. Os exercícios aeróbicos dos dois grupos de estudantes universitárias femininas de aeróbica foram pontuados, visando a comparação e explorar qual o método de treinamento mais eficaz. Resultados: O valor de tempo e ritmo basal na intervenção com pilates foi alterado de 2,35±0,71 para 2,55±0,76, o conjunto de movimentos mudou de 3,86±0,98 para 4,01±1,07, o desempenho do movimento de 1,67±0,61 para 1,72±0,57, e as habilidades com os pés de 1,40±0,48 para 1,41±0,50. A pontuação média do desempenho do movimento aeróbico mudou de 62,45 para 80,53, um aumento de 18,08 pontos. Conclusão: O treinamento de Pilates pode efetivamente melhorar o desempenho de estudantes universitárias femininas de aeróbica. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: Pilates es un método de entrenamiento que pretende trabajar la conciencia corporal para la reeducación del movimiento, aportando equilibrio muscular y mental. Se cree que estos beneficios pueden mejorar eficazmente la flexibilidad de las estudiantes universitarias de aeróbic. Objetivo: Evaluar los efectos del entrenamiento basado en pilates en el rendimiento deportivo de estudiantes universitarias. Métodos: Se seleccionaron 90 estudiantes universitarias del curso optativo de aeróbic y se dividieron en dos grupos. Se evaluaron los datos del grupo experimental y del grupo de control para compararlos antes y después del experimento. Se puntuaron los ejercicios aeróbicos de los dos grupos de estudiantes universitarias de aeróbic, con el objetivo de comparar y explorar qué método de entrenamiento era más eficaz. Resultados: La puntuación inicial de tiempo y ritmo en el experimento de pilates pasó de 2,35±0,71 a 2,55±0,76, la del conjunto de movimientos pasó de 3,86±0,98 a 4,01±1,07, la del rendimiento de los movimientos pasó de 1,67±0,61 a 1,72±0,57, y la de las habilidades con los pies pasó de 1,40±0,48 a 1,41±0,50. La puntuación media del rendimiento de los movimientos aeróbicos pasó de 1,67±0,61 a 1,72±0,57, y la de las habilidades con los pies de 1,40±0,48 a 1,41±0,50. La puntuación media del rendimiento del movimiento aeróbico pasó de 62,45 a 80,53, lo que supone un aumento de 18,08 puntos. Conclusión: El entrenamiento con Pilates puede mejorar eficazmente el rendimiento aeróbico de las estudiantes universitarias. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

RESUMO

Photobiomodulation (PBM) has ergogenic effects on aerobic and anaerobic efforts and may improve sports performance. As Brazilian jiu-jitsu (BJJ) fighting requires both aerobic and anaerobic metabolism, so PBM may be effective in increasing the physical performance of BJJ athletes. Thus, this study aimed to verify the effects of PBM with different energy doses (6 or 12 J per point) on high-intensity intermittent anaerobic performance in BJJ athletes. METHODS: Eleven male athletes performed three lower limb Wingate testing sessions. At the beginning of each session, in a randomized, crossover, double-blind fashion, the athletes received PBM with a dose of 6 J (4.5 J/cm2) or 12 J (9.1 J/cm2), or placebo (PLA) at 17 points in each lower limb. In each session, the squat jump (SJ) and three Wingate test series were performed, with a 3-minute interval between series. Heart rate (HR) was collected immediately before, after each Wingate test, and at 1, 3, and 5 minutes after the last test. The rate of perceived exertion (RPE) was reported after each Wingate test. Differences between Wingate tests and treatment sessions were set at p<0.05. RESULTS: No differences were observed between treatments in SJ height, Wingate performance, HR, and RPE (p>0.05; for all comparisons). The Wingate test session promoted a reduction in anaerobic capacity in the second and third sets in all conditions, indicating fatigue (p<0.05). CONCLUSION: Treatment with PBM did not produce a dose-dependent ergogenic response in high-intensity intermittent performance in BJJ athletes.

RESUMO

The objective of this study was to monitor the training loads (TL) and well-being of elite rhythmic gymnastics (RG) athletes, as well as compare these variables between starters and reserve gymnasts during 25 weeks of training. Ten athletes from the Brazilian national RG team (17.4 ± 1.1 y of age) were monitored during the general preparatory period (GPP), specific preparatory period (SPP), and pre-competitive period (PCP). The internal TL was quantified with the use of sessional ratings of perceived exertion (sRPE). We assessed well-being daily with a well-being scale. The TL, duration, monotony, and strain were calculated weekly. We found that the internal TL and session durations were 9242 ± 2511 AU and 2014 ± 450 min, respectively. The internal TL, strain, and monotony were greater in the PCP than in the GPP and SPP for starters. In the SPP, there were statistical differences in internal TL (p = 0.036) and strain (p = 0.027) between starters and reserves. In the PCP, there were also statistical differences between starters vs. reserves athletes regarding internal TL (p = 0.027) and strain (p = 0.05). There was no statistically significant difference in well-being between the periods assessed. In conclusion, RG athletes display a higher TL magnitude during the PCP, whereas only reporting non-significant minor variations in well-being. In addition, there is a discrepancy in the TL between starters and reserves.

RESUMO

ABSTRACT Objective: Sports play a crucial role in China's national sportsmanship. Therefore, it is necessary to further promote China's development as a sports powerhouse. People's health needs to be raised to the pinnacle of the national fitness strategy, and the government should seriously implement people's health work. Methods: the construction of the "Powerful Country for Sports" and "Healthy China" provides a more precise direction for the development of national fitness and opens a broader path for the development of national health. The dream of a powerful country in sports has a long history, and different times have different definitions. Results: building a sports power is a strategic project for the development of modern socialist capability with Chinese characteristics. Accelerating the construction of a sports power is related to national prosperity and rejuvenation, and is closely related to the happiness of the people. Conclusions: the barrier preventing the sustainable development of national sports break and create a new driving force for the development of a sports power only by solving the problem of displacement in building a sports power and promoting the deep integration of national fitness and health. Level of evidence II; Therapeutic studies - investigation of treatment results.

RESUMO Objetivo: O esporte desempenha um papel crucial no espírito esportivo nacional da China. Portanto, é necessário promover ainda mais o desenvolvimento da China como uma potência esportiva. A saúde das pessoas precisa ser elevada ao auge da estratégia nacional de aptidão física, e o governo deveria implementar seriamente o trabalho de saúde das pessoas. Métodos: a construção do "País poderoso para o esporte" e da "China saudável" fornece uma direção mais precisa para o desenvolvimento da aptidão física nacional e abre um caminho mais amplo para o desenvolvimento da saúde nacional. O sonho de um país poderoso no esporte tem uma longa história, e tempos diferentes têm definições diferentes. Resultados: a construção de uma potência esportiva é um projeto estratégico para o desenvolvimento de uma capacidade socialista moderna com características chinesas. Acelerar a construção de uma potência esportiva está relacionado com a prosperidade e o rejuvenescimento nacional, e está intimamente relacionado com a felicidade do povo. Conclusões: somente resolvendo o problema do deslocamento na construção de uma potência esportiva e promovendo a integração profunda da condição física e da saúde nacional se poderá quebrar a barreira que impede o desenvolvimento sustentável do esporte nacional e criar uma nova força motriz para o desenvolvimento de uma potência esportiva. Nível de evidência II; Estudos terapêuticos - investigação de resultados de tratamento.

Resumen Objetivo: Los deportes desempeñan un papel crucial en el espíritu deportivo nacional de China. Por lo tanto, es necesario seguir promoviendo el desarrollo de China como potencia deportiva. Es necesario elevar la salud del pueblo a la cúspide de la estrategia nacional de aptitud física, y el gobierno debe implementar seriamente el trabajo de salud de las personas. Métodos: la construcción del "País poderoso en deportes" y de la "China saludable" proporciona una dirección más precisa para el desarrollo de la aptitud física nacional y abre un camino más amplio para el desarrollo de la salud nacional. El sueño de un país poderoso en el deporte tiene una larga historia, y diferentes épocas tienen diferentes definiciones. Resultados: la construcción de una potencia deportiva es un proyecto estratégico para el desarrollo de la capacidad socialista moderna con características chinas. Acelerar la construcción de una potencia deportiva está relacionado con la prosperidad y el rejuvenecimiento nacionales, y está estrechamente relacionado con la felicidad del pueblo. Conclusiones: sólo resolviendo el problema del desplazamiento en la construcción de una potencia deportiva y promoviendo la integración profunda de la aptitud y la salud nacionales se puede romper la barrera que impide el desarrollo sostenible del deporte nacional y crear una nueva fuerza motriz para el desarrollo de una potencia deportiva. Nivel de evidencia II; Estudios terapéuticos - investigación de resultados de tratamiento.