Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 182
Filtrar
1.
PeerJ ; 12: e17576, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39071136

RESUMO

Breast cancer is the most common cancer in women worldwide, and its treatment usually involves a combination of many medical procedures, including surgery, chemotherapy, radiotherapy, and hormonal therapy. One of the detrimental effects on physical function is reduced upper limb muscle strength. This study aimed to evaluate upper body strength intra-day and inter-day (test-retest) reliability using the handgrip strength test (HGS) and the bilateral isometric bench press (BIBP) and the test-retest reliability of the one repetition maximum on the bench press (BP-1RM) in breast cancer survivors (BCS). Thirty-two (52.94 ± 8.99 yrs) BCS participated in this study. The muscle strength tests were performed in two different moments, three to seven days apart. Intraclass coefficient correlation (ICC) and coefficient of variation (CV) were used to assess the reliability. Standard error of measurement (SEM), typical error of measurement (TEM), and minimally detectable change (MDC) analyses were performed. The Bland-Altman analysis was used to assess the agreement between test-retest. We found a reliability that can be described as "high" to "very high" (ICC ≥ 0.88; CV ≤ 10%) for intra-day and test-retest. SEM% and MDC% were lower than 5% and 11%, respectively, for all intra-day testing. SEM% and TEM% ranged from 3% to 11%, and MDC% ranged from 9% to 23% in the test-retest reliability. The agreement demonstrated a systematic bias ranging from 2.3% to 6.0% for all testing, and a lower systematic bias may be presented in the non-treated side assessed by HGS and BIBP. HGS, BIBP, and BP-1RM assessments are reliable for measuring upper-body muscle strength in BCS.


Assuntos
Neoplasias da Mama , Sobreviventes de Câncer , Força da Mão , Força Muscular , Humanos , Feminino , Reprodutibilidade dos Testes , Pessoa de Meia-Idade , Força Muscular/fisiologia , Força da Mão/fisiologia , Adulto , Contração Isométrica/fisiologia , Extremidade Superior/fisiopatologia
2.
Materials (Basel) ; 17(9)2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38730937

RESUMO

Mineral extraction of coal in the carboniferous region of southern Santa Catarina (Brazil) plays a significant role in the regional economy. However, this activity has severe environmental impacts, with approximately 65% of the extracted mineral being discarded as a rejected material (deposited in landfills). The identification of the technological potential of these materials, based on the geological aspects of the extraction site and the beneficiation operations applied to obtain coal, provides the opportunity to add value to different residual fractions that can be reused. Thus, waste valorization, the main objective of this work, has recently become a strategy for the application of these minerals in the production of clay ceramics using a systematic approach named CPQvA, which means "classification, potentiality, quantity/viability, and applicability". The use of these materials as secondary mineral sources can avoid the deposition of these materials in industrial landfills and help to reduce the pressure on landfills, which receive an average of four million tons of material annually. In this study, the residual fraction, part of the tailing from coal beneficiation, known as coal fines, was evaluated for formulation valorization in clay ceramics. This residual fraction was classified as non-hazardous (class II-A, non-inert). X-ray fluorescence spectrometry, X-ray diffraction, and thermogravimetric analysis were performed to characterize the moisture content, particle-size distribution, and coal content to be used in the development of different formulations using the residual fraction of coal tailings (ranging from 0 to 40%) that are of technological interest to the sector. Processing parameters, such as firing at different temperatures (750, 800, 850, and 900 °C), were also correlated with these formulations. The results were compared with those of a reference ceramic formulation from the local productive arrangement of Morro da Fumaça (Arranjo Produtivo Local Cerâmica Vermelha de Morro da Fumaça). The various relationships between the materials were characterized in terms of their thermal shrinkage, water absorption, and mechanical resistance. Leaching and solubilization environmental tests revealed that both the industrial standard formulation and formulations with the application of the residual fraction were classified as non-hazardous materials. Thus, the method of using a mining residual fraction in the formulation of clay ceramics proved to be beneficial for the circular economy in the regional mineral sector through productive and environmental gains; the primary mineral resource and energy consumptions and the impacts related to waste generation were reduced. The results of this study can be applied to similar situations in other parts of the world.

3.
Sports Med Int Open ; 8: a22077922, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38812958

RESUMO

Mean propulsive velocity (MPV) has been associated with neuromuscular fatigue; however, its suitability for strength training in Paralympic powerlifting (PP) remains uncertain. The objective of this work was to evaluate the MPV in two training methods (traditional-TRAD and eccentric-ECC). Eleven PP athletes were evaluated pre, during the intervention and post intervention at a load of 80% of the 1RM for TRAD and 110%-80% of 1 RM for ECC. The results demonstrated that there was no significant neuromuscular fatigue for the TRAD (~5% performance loss), as well as no significant decline in MPV during the intervention. For the ECC, there is a significant reduction in MPV before and after training (~12% loss of performance). A difference between TRAD and ECC after the intervention was also identified (0.87 m/s±0.22, 95% CI 0.72-1.02 vs. 0.72±0.20, 95% CI 0.59-0.86 p=0.042, F(3.30)=10.190, η2p=0.505 - very high effect). During the intervention for ECC, no significant decline in MPV was observed. The results of this study suggest that the mechanical indices of MPV do not seem to be effective indicators of neuromuscular fatigue in the sample studied or in the context of this specific training regime, being more indicated as a control of training volume.

4.
Entramado ; 19(2)dic. 2023.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1534435

RESUMO

Paralelo a las transformaciones políticas y culturales a nivel mundial en los años veinte, se inició en Colombia, en este mismo decenio, un ambiente de polarización política, la cual tuvo un nuevo ingrediente en la renovada disputa entre los partidos tradicionales: el pánico rojo. El pánico rojo fue una estrategia de permanente campaña de desinformación que los diarios locales y nacionales llevaron a cabo con claros intereses políticos. El propósito de este artículo es analizar este temor al comunismo en el contexto de la confrontación política en las décadas de 1930-1940 en Santander: Esto permitirá reconocer qué grupos, y desde qué publicaciones periódicas, se asumieron como grupos de izquierda. Además, se busca identificar quiénes fueron tachados de comunistas y cómo se utilizó esta arma discursiva a partir del miedo, para polarizar aún más la política y exacerbar la violencia. Para llevar a cabo este análisis, se examinarán tres publicaciones periódicas de diferentes espectros políticos: "El Deber", "Vanguardia Liberal" y "Tribuna Liberal". Se prestará especial atención al uso cambiante que estos diarios hicieron del anticomunismo en diferentes coyunturas políticas.


Parallel to the worldwide political and cultural transformations in the twenties, an environment of political polarization began in Colombia in this same decade, which had a new ingredient in the renewed dispute between the traditional parties: the red panic. The red panic was a permanent disinformation campaign strategy carried out by local and national newspapers with clear political interests. The purpose of this article is to analyze this fear of communism in the context of the political confrontation in the I930-I940s in Santander This will make it possible to recognize which groups, and from which periodicals, assumed themselves to be left-wing groups. In addition, it seeks to identify who was branded as communists and how this discursive weapon was used based on fear, to further polarize politics and exacerbate violence. To carry out this analysis, three periodicals from different political spectrums will be examined: "El Deber", "Vanguardia Liberal" and "Tribuna Liberal". Special attention will be paid to the changing use that these newspapers made of anti-communism in different political situations.


Paralelamente às transformações políticas e culturais globais da década de 1920, nessa mesma década iniciou-se um clima de polarização política na Colômbia, que teve um novo ingrediente na renovada disputa entre os partidos tradicionais: o pânico vermelho. O pânico vermelho foi uma estratégia de campanha de desinformação contínua realizada por jornais locais e nacionais com claros interesses políticos. O objetivo deste artigo é analisar esse medo do comunismo no contexto do confronto político dos anos 1930-1940 em Santander. Isso permitirá reconhecer quais grupos e quais jornais se assumiram como grupos de esquerda. Além disso, busca identificar quem foi tachado de comunista e como essa arma discursiva baseada no medo foi utilizada para polarizar ainda mais a política e exacerbar a violência. Para realizar esta análise, serão examinados três jornais de diferentes espectros políticos: "El Deber", "Vanguardia Liberal" e "Tribuna Liberal". Será dada especial atenção à evolução do uso que estes jornais fizeram do anticomunismo em diferentes situações políticas.

5.
RECIIS (Online) ; 17(3): 696-713, jul.-set. 2023.
Artigo em Português | LILACS, Coleciona SUS | ID: biblio-1518908

RESUMO

O Peer Review of Electronic Search Strategies (PRESS) é um instrumento elaborado na Canadian Agency for Drugs & Technologies in Health (CADTH) para avaliar cada elemento das estratégias de busca em bases de dados eletrônicas que podem influenciar a base das evidências das revisões sistemáticas. Os autores obtiveram licença para traduzir o PRESS para o português. O objetivo é contribuir para disseminação, uso e posterior implementação do PRESS, especialmente entre os bibliotecários, consolidando uma prática de avaliação de estratégias de busca das revisões sistemáticas. A metodologia foi o relato de experiência. Para contextualizar, inicia-se com o histórico da construção do PRESS, seguido do processo da tradução e apresentação das funcionalidades de cada tabela. O resultado é a disponibilização da versão do PRESS em português na página da CADTH. Conclui-se que a tradução deve impactar positivamente na qualidade das estratégias de busca das revisões sistemáticas com participação de bibliotecários brasileiros


The Peer Review of Electronic Search Strategies (PRESS) is an instrument developed at the Canadian Agen-cy for Drugs & Technologies in Health (CADTH) to evaluate each element of search strategies in electronic databases that may influence the evidence base of systematic reviews. The authors obtained a license to translate the PRESS into Portuguese. The objective is to contribute to the dissemination, use and sub-sequent implementation of PRESS, especially among librarians, to consolidate the practice of evaluating search strategies for systematic reviews. The methodology used was the experience report. It begins with the history of the construction of PRESS, followed by the report of the translation process and the function-alities of each table. The result is the availability of the PRESS version in portuguese on the CADTH page. It is concluded that the translation should have a positive impact on the quality of search strategies for systematic reviews involving Brazilian librarians


El Peer Review of Electronic Search Strategies (PRESS) es un instrumento de la Canadian Agency for Drugs & Technologies in Health (CADTH) para evaluar cada elemento de las estrategias de búsqueda en bases de datos electrónicas que pueden influir en la base de evidencia de revisiones sistemáticas. Los autores obtu-vieron permiso para traducir PRESS al portugués. El objetivo es contribuir para difusión, uso e implemen-tación del PRESS, especialmente entre bibliotecarios, para consolidar la práctica de evaluar las estrategias de búsqueda de revisiones sistemáticas. La metodología utilizada fue relato de experiencias. Comienza con la historia de la construcción de PRESS, sigue el relato de la traducción, y de las funcionalidades de cada ta-bla. Como resultado el PRESS en portugués está en el sitio web de CADTH. Se concluye que esta traducción debe tener un impacto positivo en la calidad de las estrategias de búsqueda de revisiones sistemáticas que involucren bibliotecarios brasileños


Assuntos
Humanos , Revisões Sistemáticas como Assunto , Biblioteconomia , Tradução , Relatos de Casos , Saúde , Vocabulário Controlado , Publicações Científicas e Técnicas , Revisão Sistemática
6.
Int J Sports Physiol Perform ; 18(10): 1206-1212, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37536675

RESUMO

Studies on postactivation performance enhancement (PAPE) have used different exercises as a conditioning activity to investigate potentiation, but exclusively in upper limbs (UL) or lower (LL) limbs, or contralateral potentiation. A single exercise capable of inducing PAPE in both UL and LL is currently unknown. The present study explored the effect of the clean and jerk (C&J) as a conditioning activity for simultaneously producing PAPE interlimbs at the fourth, seventh, and 12th minutes postintervention. Twelve male weightlifters with 1-repetition maximum (1RM) in the C&J equivalent to ≥1.15 × body mass were randomly submitted to 2 experimental conditions (C&J and control [CON]). The C&J condition consisted of general warm-up (running on a treadmill and self-selected preparatory exercises) and 4 sets of 3 repetitions of C&J with 2 minutes between them (30%1RM, 50%1RM, 65%1RM, and 80%1RM) followed by a countermovement jump and a bench-press throw on a Smith machine after 4, 7, and 12 minutes, to measure the magnitude of PAPE in UL and LL. No previous exercise preceded countermovement-jump and bench-press-throw tests in the CON besides general warm-up. The main finding was that, regardless of time, the C&J resulted in greater height on countermovement jump and Smith machine bench-press throw when compared with the CON, presenting a similar effect size between UL and LL (34.6 [3.9] vs 33.4 [4.1] cm [+3.66%]; P = .038; effect size = 0.30 and 30.3 [4.7] vs 29.0 [5.1] cm [+4.44%]; P = .039; effect size = 0.26), respectively. Thus, C&J can be useful to produce PAPE simultaneously among members.


Assuntos
Treinamento Resistido , Corrida , Humanos , Masculino , Força Muscular/fisiologia , Treinamento Resistido/métodos , Exercício Físico , Extremidade Inferior , Músculo Esquelético/fisiologia
7.
Trop Anim Health Prod ; 55(2): 110, 2023 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-36917341

RESUMO

A meta-analysis was conducted to evaluate the effects of dietary palm kernel cake inclusion (PKCInclusion) on the nutrient intake and digestibility, as well as on the performance of cattle under grazing and confined systems. Additionally, potential maximum safe levels (MSL) for PKCInclusion were explored for cattle under those systems using a broken-line approach. Overall, 22 studies for 85 treatment means and 747 experimental units were included in the dataset used for the meta-analysis in which, quantitative responses to increasing PKCInclusion levels were fitted using a mixed model, considering the study as a random effect. Additionally, all studies tested a treatment without the inclusion of PKC (PKCInclusion = 0 g/kg DM) in the concentrate and total mixed ration fed to grazing and confined animals, respectively. In grazing animals, intake, and digestibility of dry matter (DM), as well as intake of total digestible nutrient (TDN) and digestibility of crude protein (CP) decreased linearly (P < 0.01) as PKCInclusion increased. Conversely, the intake and digestibility of neutral detergent fiber (NDF) increased linearly (P < 0.01). Additionally, the intake of CP showed a quadratic decreasing pattern (P < 0.01) with the increase in dietary PKCInclusion. In confined animals, intake of DM, CP, NDF, and TDN revealed quadratic patterns (P < 0.01) as PKCInclusion increased. The digestibility of DM, CP, NDF, as well as TDN concentration showed a linear decreasing pattern (P < 0.05) as PKCInclusion increased. For performance, data revealed that average daily gain (ADG) decreased linearly (P < 0.01) in grazing and confined animals with the increase in PKCInclusion. Feed efficiency (FE) decreased linearly (P < 0.01) in grazing animals, whereas it showed a linear increase (P < 0.05) in confined animals. Exploration of the quadratic relationships of intake of DM, CP, NDF, and TDN with PKCInclusion in confined animals revealed MSL values for PKC ranging from 85.56 ± 14.2 to 126.4 ± 14.7 g PKC/kg DM. In grazing animals, exploration of the quadratic relationship of intake of CP with PKCInclusion, revealed an MSL value of 96.23 ± 9.01 g PKC/kg DM. In conclusion, data revealed that the use of PKC in both confined and grazing systems reduces the nutrient utilization and performance of cattle in a dose-dependent manner without a maximum safe level that does not reduce animal performance.


Assuntos
Ração Animal , Digestão , Bovinos , Animais , Ração Animal/análise , Dieta/veterinária , Ingestão de Alimentos , Nutrientes , Fibras na Dieta
8.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1507402

RESUMO

ABSTRACT PreS/S gene mutations could impact virus secretion, infection and immune evasion. However, the relationship between PreS/S mutations and intrauterine transmission has not yet been clarified. Thus, we aimed to explore the associations between PreS/S gene mutations of HBV isolated from mothers and intrauterine transmission. We analyzed the mutations of PreS/S regions of the HBV genome in mothers with HBV DNA levels ≥ 106 IU/mL whose neonates experienced HBV intrauterine transmission (transmission group, GT) and those whose neonates did not experience intrauterine transmission (control group, GC) analyzed using clone-based sequencing. In total, 206 sequences were successfully amplified, including 98 sequences (from 21 mothers) from GT and 108 sequences (from 20 mothers) from GC of genotype C for mutational analysis. Among the 1203 nucleotides of PreS/S regions, there were 219 (18.20%) base substitutions, of which 103 (47.03%) base mutations caused amino acid changes. F80S, A90V and I68T were mutation hotspots. Mothers in GT had a higher mutation rate of A90V in the PreS1 gene than mothers in GC. The A90V mutation increased the risk of HBV intrauterine transmission after adjusting the maternal age and the mode of delivery (OR = 6.23, 95% CI: 1.18-32.97). Moreover, the area under the ROC curve (AUC) for intrauterine transmission due to A90V and a combination of A90V with the mode of delivery were 0.723 (95% CI: 0.575 to 0.891, P = 0.011) and 0.848 (95% CI: 0.723 to 0.972, P < 0.001), respectively. Mothers with the A90V mutation in the PreS1 gene may be a potential risk factor for HBV intrauterine transmission.

9.
Rev. bras. ciênc. esporte ; 45: e20230005, 2023.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1441220

RESUMO

RESUMEN Lilian Harrison fue la primera persona en completar la travesía del Río de la Plata a nado, entre Colonia (Uruguay) y Punta Lara (Argentina) en 1923. La prensa argentina de la época coronó la victoria como un logro de toda la nación, a despecho de las apelaciones sexistas de los reportajes. Este artículo pretende analizar los discursos de la prensa uruguaya sobre la hazaña de la nadadora, utilizando las principales publicaciones periódicas de la época. El análisis de los reportajes permite concluir que, además de los artículos sexistas, que disminuían los logros de la atleta en comparación con sus compañeros masculinos, había cierto nivel de contrariedad en los reportajes, lo que indicaba el desagrado de la prensa hacia los propios nadadores del país.


ABSTRACT Lilian Harrison was the first person to complete the crossing of the River Plate by swimming between Colonia (Uruguay) and Punta Lara (Argentina) in 1923. The Argentine press of the time crowned the victory as an achievement of the whole nation, despite the sexist appeals of the reports. This article aims to analyse the discourses of the Uruguayan press about the swimmer's achievement, using the main periodicals published at the time. An analysis of the reports allows us to conclude that, in addition to the sexist articles, which also diminished the athlete's achievements compared to her male companions, there was some level of contrariness in the reports, signalling the displeasure of the press towards the country's swimmers.


RESUMO Lilian Harrison foi a primeira pessoa a completar a Travessia do Rio da Prata à nado, entre Colônia (Uruguay) e Punta Lara (Argentina) no ano de 1923. A imprensa argentina da época coroou a vitória como uma conquista de toda a nação, em que pesem os apelos sexistas das reportagens. Esse artigo tem como objetivo analisar os discursos da imprensa Uruguaya sobre o feito da nadadora, utilizando os principais periódicos publicados na época. Uma análise das reportagens permite concluir que, para além das matérias sexistas, que também diminuíram os feitos da atleta frente aos companheiros do gênero masculino, houve algum nível de contrariedade nas reportagens, sinalizando o desagrado da imprensa em relação aos próprios nadadores do país.

10.
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1538076

RESUMO

Introdução: Este texto identifica e analisa matérias jornalísticas que abordaram o consumo de alimentos  durante a pandemia, no contexto da crise econômica e do desmonte das políticas públicas de segurança alimentar no país. Objetivo: O objetivo geral do trabalho é analisar o conteúdo das matérias que abordaram o tema para perceber que mensagens elas transmitiam a respeito do agravamento da insegurança alimentar no contexto da crise econômica e do aumento do preço dos alimentos. Método: Para efetuar a análise do conteúdo, foram selecionadas 15 matérias nos sites de dois jornais, a saber, Extra e G1, do Grupo Globo S.A., publicadas entre 2020 e 2021, auge da pandemia. Resultados: Os resultados obtidos mostraram que, via de regra, a cobertura jornalística abordou o aumento do preço dos alimentos e dos custos na cadeia de suprimentos como uma realidade dada ­ às vezes, da natureza ­ e não como resultante de um processo construído politica e socialmente a partir das decisões políticas dos nossos dirigentes. Com isso, os verdadeiros responsáveis pela crise e pelo desmonte das políticas de segurança alimentar seguiram invisíveis e, portanto, protegidos da opinião pública. Discussão: O estudo examina de forma crítica o papel da mídia na produção de mensagens que perpetuam narrativas que ocultam os responsáveis pelos problemas coletivos da população e mostra, a partir da trajetória do setor, as decisões políticas que nos levaram de volta ao mapa da fome. Por fim, destaca a importância de reativar o CONSEA como órgão consultivo fundamental no combate à insegurança alimentar. (AU)


Introduction: This text identifies and analyzes journalistic articles that addressed food consumption during the pandemic, in the context of the economic crisis and the dismantling of public food security policies in the country. Objective: The general objective of the work is to analyze the content of the articles that addressed the theme to understand what messages they transmitted regarding the worsening of food insecurity in the context of the economic crisis and the increase in food prices. Method: To perform the content analysis, 15 articles were selected on the websites of two newspapers, namely, Extra and G1, from Grupo Globo S.A., published between 2020 and 2021, the height of pandemic. Results: The results showed, mostly, that journalistic coverage addressed the increase in food prices and costs in the supply chain as a given reality ­ sometimes, of nature ­ and not as a result of a political and social process, based on the political decisions of our leaders. As a result, those truly responsible for the crisis and the dismantling of food security policies were not properly identified or held accountable for their actions. Discussion: The study critically examines the role of the media in producing messages that perpetuate narratives that hide those responsible for the collective problems of the population and shows, based on the trajectory of the sector, the political decisions that led us back to the hunger map. Finally, it highlights the importance of reactivating the CONSEA as fundamental advisory body in the fight against food insecurity. (AU)

11.
J. Phys. Educ. (Maringá) ; 34: e3424, 2023. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1528870

RESUMO

ABSTRACT Body mass is known to affect muscle strength and the outcome of some functional tests, so that heavier and taller people will be stronger than lighter and smaller ones. Ratio standard (RS) has been widely used to remove the body mass effect, despite long date criticism due to its inadequacy. Allometry (ALLO), in turn, has been applied as an efficient method for normalizing muscular strength. As the bench press (BP) is a well-recognized strength and conditioning exercise for older adults, the aim of the present study was to verify the influence of body mass on the performance assessment of a group of older men in the BP, by comparing the absolute, RS and ALLO approaches. Sixteen healthy old men (65.5±5.13 years old; 75.42±9.78Kg; 1.73±5.98m; 25.11±2.71 kg/m2; 24.76±4.10 %fat) volunteered to participate in the study. Maximum dynamic load was verified by individual one-repetition maximum (1-RM) tests. Comparisons of means revealed that significant 1-RM difference between lighter (54.9±8.85Kg) and heavier (66.2±8.86Kg) participants was identified only in absolute approach (p<0.05; ES=0.57). RS failed in completely remove the body mass effect, allowing correlation between normalized muscular strength and BM (r=0.23), in contraire of ALLO (r=0.03 and 0.06). Kendall's concordance coefficient revealed an absolute lack of agreement between approaches when compared their respective ordinal classifications (kw=0.003; p>0.05). In line with previous research, ALLO has shown to be the only suitable method to remove adequately the body mass effect and to provide appropriated performance scores for the older men evaluated in this study.


RESUMO Sabe-se que a massa corporal afeta a força muscular e o resultado de alguns testes funcionais, de modo que pessoas mais pesadas e altas serão mais fortes que as mais leves e menores. A razão-padrão (RP) tem sido largamente utilizada para remover o efeito da massa corporal, apesar de críticas conhecidas há muito tempo devido sua inadequação. Alometria (ALO), do contrário, tem sido aplicada como um método eficiente para normalizar a força muscular. Como o supino é um exercício de força e condicionamento bem reconhecido para idosos, o objetivo deste estudo foi verificar a influência da massa corporal sobre a avaliação do desempenho de um grupo de idosos no supino, comparando as abordagens absoluta (AB), RP e ALO. Dezesseis idosos saudáveis (65,5±5,13 anos de idade; 75,42±9,78Kg; 1,73±5,98m; 25,11±2,71 kg/m2; 24,76±4,10 %gordura) se voluntariaram para participar no estudo. A máxima carga dinâmica foi verificada pelos testes de 1 repetição máxima (1RM). Na comparação das médias, a diferença significante do 1RM entre os participantes leves (54,9±8,85Kg) e pesados (66,2±8,86Kg) foi identificada apenas na abordagem ABS (p<0,05; ES=0,57). A RP falhou em remover completamente o efeito da massa corporal, permitindo correlação entre a força muscular e a massa corporal normalizadas (r=0,23), ao contrário da ALO (r=0,23 e 0,06). O coeficiente de Kendall revelou ausência de concordância entre as abordagens quando comparadas as suas respectivas classificações ordinais (kw=0,003; p>0,05). Em linha com pesquisas anteriores, ALO tem se mostrado como o único método viável para remover adequadamente o efeito da MC e para oferecer escores de desempenho mais apropriados para homens idosos, como os avaliados por este estudo.


Assuntos
Humanos , Masculino , Idoso , Idoso/fisiologia , Eficiência/fisiologia , Força Muscular/fisiologia , Exercício Físico/fisiologia , Índice de Massa Corporal , Análise de Escalonamento Multidimensional
12.
Hist. ciênc. saúde-Manguinhos ; Hist. ciênc. saúde-Manguinhos;29(4): 895-913, oct,-dic. 2022.
Artigo em Português | LILACS | ID: biblio-1421583

RESUMO

Resumo A partir do século XIX, teve início no Rio de Janeiro um intenso processo de urbanização da cidade e de civilização de seus habitantes. Grande parte dos valores e hábitos da população sofreu um desprestígio em relação a um novo modo de vida que se difundiu. A imprensa era considerada um dos mais importantes instrumentos de civilização, publicando em suas páginas os mais diferentes saberes e novidades, que sugeriam à população um novo modus vivendi , considerado mais urbano e civilizado. O objetivo principal deste artigo é explicitar este discurso pedagógico construído nos periódicos oitocentistas, especificamente as prescrições que diziam respeito à higiene e ao cuidado com o corpo.


Abstract Intensive efforts to urbanize the city of Rio de Janeiro and civilize its inhabitants began in the nineteenth century. Many of the population's values and habits fell out of favor compared with the new way of life that was being disseminated. The press was considered one of the most important instruments in this process of civilization, publishing a wide variety of knowledge and novelties in its periodicals that suggested a new more urbane and civilized way for the population to live. This article examines the pedagogical discourse constructed during this period, specifically recommendations related to bodily hygiene and care.


Assuntos
Urbanização , Higiene , Cultura , Hábitos , Meios de Comunicação de Massa , Brasil , História do Século XIX
13.
J Electromyogr Kinesiol ; 67: 102722, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36334406

RESUMO

This study combined surface electromyography with panoramic ultrasound imaging to investigate whether non-uniform excitation could lead to acute localized variations in cross-sectional area and muscle thickness of the clavicular and sternocostal heads of pectoralis major (PM). Bipolar surface electromyograms (EMGs) were acquired from both PM heads, while 13 men performed four sets of the flat and 45° inclined bench press exercises. Before and immediately after exercise, panoramic ultrasound images were collected transversely to the fibers. Normalized root mean square (RMS) amplitude and variations in the cross-sectional area and muscle thickness were calculated separately for each PM head. For all sets of the inclined bench press, the normalized RMS amplitude was greater for the clavicular head than the sternocostal head (P < 0.001), and the opposite was observed during the flat bench press (P < 0.001). Similarly, while greater increases in cross-sectional area were observed in the clavicular than in the sternocostal head after the inclined bench press (P < 0.001), greater increases were quantified in the sternocostal than in the clavicular head after the flat bench press exercise (P = 0.046). Therefore, our results suggest that the PM regional excitation induced by changes in bench press inclination leads to acute, uneven responses of muscle architecture following the exercise.


Assuntos
Músculos Peitorais , Treinamento Resistido , Masculino , Humanos , Músculos Peitorais/diagnóstico por imagem , Músculos Peitorais/fisiologia , Músculo Esquelético/diagnóstico por imagem , Músculo Esquelético/fisiologia , Eletromiografia , Terapia por Exercício , Ultrassonografia , Treinamento Resistido/métodos , Levantamento de Peso/fisiologia , Força Muscular/fisiologia
14.
Front Nutr ; 9: 977813, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36245529

RESUMO

The consumption of regular vegetable oils has been linked to energy acquisition, nutritional benefits, health improvement, and the regulation of metabolic diseases. This study evaluated fatty acids composition, physicochemical, thermal, oxidative, and optical properties, and quantified trace elements in the sunflower oil extracted by a domestic cold-press machine. The oil presented linoleic (54.00%) and oleic (37.29%) primary unsaturated fatty acids (91.67%), in which atherogenic (0.05), thrombogenic (0.16), hypocholesterolemic/hypercholesterolemic (21.97), peroxide (16.16), saponification (141.80), and relative density indices (0.92) demonstrated to be suitable for human consumption and possible health promotion. In addition, the concentrations of trace elements by ICP OES were ordered Zn > Fe > Al > Cu > Mn > Cr. Concentrations of Zn, Fe, Al, Cu, and Mn were lower than FAO/WHO and DRI/AI limits, while Cr concentrations exceeded the FAO/WHO limits, which can be used as an indicator of the polluted ambiance. Sunflower oil quantities daily consumption were calculated by taking into account non-carcinogenic risk (CR < 10-4), and total non-carcinogenic hazard index (HI < 1). Based on trace elements determined in this study, the suitable quantity of sunflower oil consumption varies according to individuals aged 8, 18, and 30 years and will be deemed 0.61, 1.46, and 1.65 g/kg, respectively, attending HI = 0.99 and CR < 10-4.

16.
Ciênc. Saúde Colet. (Impr.) ; Ciênc. Saúde Colet. (Impr.);27(9): 3441-3450, set. 2022.
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1394231

RESUMO

Resumo Na segunda metade do século XIX, o periodismo expandiu-se e alcançou grande variedade temática e de público, e era constituído pelos jornais diários, que se dedicavam especialmente ao cotidiano da cidade, e pelas revistas científico-literárias, que veiculavam textos de temáticas diversas, como literatura, biografia, ciências e educação. Nas páginas dos inúmeros periódicos que circulavam no Rio de Janeiro, tanto dos chamados jornais diários quanto dos periódicos científico-literários, evidenciou-se grande interesse pelas temáticas da higiene, da salubridade, da epidemia de febre amarela, das medidas higiênicas e da atuação dos médicos. Entre as medidas sanitárias adotadas, foi instalado em 1º de janeiro de 1851, por orientação de Francisco de Paula Cândido, presidente da Junta de Higiene Pública, um lazareto para cerca de 30 enfermos em uma casa alugada na península do Caju, no Saco da Jurujuba, em Niterói, na província do Rio de Janeiro, e então denominado Lazareto da Jurujuba. Buscamos neste estudo analisar o conteúdo de matérias e comunicados sobre as condições e medidas sanitárias do Rio de Janeiro, especialmente sobre a criação do Lazareto da Jurujuba, publicados nos jornais diários e na imprensa não especializada.


Abstract In the second half of the nineteenth century, the press expanded and reached a wide range of themes and audiences. It consisted of daily newspapers, which were especially dedicated to the daily life of the city, and scientific-literary magazines, which published texts on a wide range of themes, including literature, biography, science, and education. In the pages of the numerous periodicals that circulated around Rio de Janeiro, both the so-called daily newspapers and the scientific-literary periodicals, there was a great interest in the themes of hygiene, salubrity, the yellow fever epidemic, hygiene, and the performance of doctors. Among these sanitation measures, adopted on January 1, 1851, under the guidance of Francisco de Paula Cândido, president of the Junta de Higiene Pública (Public Hygiene Board), a lazarette for about 30 sick people was installed in a rented house on the Caju peninsula, in Saco da Jurujuba, in Niterói, in the province of Rio de Janeiro, and then called Lazareto da Jurujuba (Lazarette of Jurujuba). The present study thus sought to analyze the content of articles and announcements about the sanitary conditions and measures in Rio de Janeiro, especially concerning the creation of the Lazareto da Jurujuba (Lazarette of Jurujuba), published in daily newspapers, and in the non-specialized press.

17.
J Food Sci Technol ; 59(5): 1982-1993, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35531402

RESUMO

Partially defatted chia flour (PDCF) is a by-product of oil extraction from chia seeds (Salvia hispanica L.). It may be used as an ingredient to improve food products, especially due to its antioxidant properties. In this work, we studied the best screw press extraction conditions that allow preserving the antioxidant properties of PDCF. A central composite design was applied to perform a response surface analysis in order to optimize the oil extraction. The variables considered for optimization were seed moisture content and pressing temperature. Besides the oil quality indicators, the study was focused on the assessment of PDCF properties, including total polyphenol content and antioxidant capacity determined by chemical methods. Our results show that, within the range of screw press conditions evaluated, the chemical quality of the oil and the antioxidant properties of PDCF are both preserved. The best results (highest oil yield and stability) were obtained under a seed moisture content of 10.2% and a pressing temperature of 58.5 °C. In general, our results indicate that screw press methodology can be applied to process chia seeds, using a wide range of conditions, to concurrently produce good quality oil and a PDCF with beneficial properties.

19.
Artigo em Inglês | MEDLINE | ID: mdl-35409809

RESUMO

The bench press is performed in parapowerlifting with the back, shoulders, buttocks, legs and heels extended over the bench, and the use of straps to secure the athlete to the bench is optional. Thus, the study evaluated muscle activation, surface electromyography (sEMG), maximum velocity (MaxV) and mean propulsive velocity (MPV), and power in paralympic powerlifting athletes under conditions tied or untied to the bench. Fifteen experienced Paralympic powerlifting male athletes (22.27 ± 10.30 years, 78.5 ± 21.6 kg) took part in the research. The sEMG measurement was performed in the sternal portion of the pectoralis major (PMES), anterior deltoid (AD), long head of the triceps brachii (TRI) and clavicular portion of the pectoralis major (PMCL). The MaxV, MPV and power were evaluated using an encoder. Loads of 40%, 60%, 80% and 100% 1RM were analyzed under untied and tied conditions. No differences were found in muscle activation between the tied and untied conditions; however, sEMG showed differences in the untied condition between AD and TRI (F (3112) = 4.484; p = 0.005) in the 100% 1RM load, between PMCL and AD (F (3112) = 3.743; p = 0.013) in 60% 1RM load and in the tied condition, between the PMES and the AD (F (3112) = 4.067; p = 0.009). There were differences in MaxV (F (3112) = 213.3; p < 0.001), and MPV (F (3112) = 248.2; p < 0.001), between all loads in the tied and untied condition. In power, the load of 100% 1RM differed from all other relative loads (F (3112) = 36.54; p < 0.001) in both conditions. The tied condition seems to favor muscle activation, sEMG, and velocity over the untied condition.


Assuntos
Treinamento Resistido , Levantamento de Peso , Atletas , Eletromiografia , Humanos , Masculino , Força Muscular/fisiologia , Músculo Esquelético/fisiologia , Levantamento de Peso/fisiologia
20.
Saúde Soc ; 31(1): e200520, 2022. graf
Artigo em Português | LILACS | ID: biblio-1357428

RESUMO

Resumo O artigo apresenta um panorama da Agência Nacional de Vigilância Sanitária (Anvisa) na imprensa brasileira. A amostra é composta por textos publicados em 2018 em diferentes veículos impressos e on-line, totalizando 1.629 publicações de 148 veículos de comunicação distintos. A partir da análise de conteúdo, observou-se que a Anvisa não é a principal fonte na maior parte dos textos sobre vigilância sanitária na imprensa, bem como não é apresentada como órgão do Sistema Único de Saúde (SUS), e que os principais temas pautados no período foram relacionados à regulamentação, aos registros e às autorizações. Dentre os assuntos sob sua responsabilidade, o mais frequente foi relacionado à área de medicamentos e farmacopeia. O mês de julho registrou uma frequência maior de textos devido à repercussão nacional do caso da morte da paciente de um cirurgião plástico e influenciador digital pelo uso de um produto autorizado pela agência. É importante que a Anvisa reveja o seu posicionamento junto à imprensa, ampliando nos meios de comunicação o seu espaço de fala como protagonista da vigilância sanitária brasileira. Os resultados da análise sugerem tendências da cobertura nacional e podem ajudar a melhorar as estratégias de comunicação não só da Anvisa, mas também de outros órgãos de saúde .


Abstract The article presents an overview of the Brazilian media coverage of the Brazilian Health Regulatory Agency (ANVISA). The sample consists of texts published in different print and online media throughout 2018, totaling 1,629 publications from 148 different media. Data underwent content analysis, showing that most texts on health surveillance in the press do not approach ANVISA as the main source nor as a body of the Brazilian Unified Health System (SUS). The main themes in the period were related to regulation, records, and authorizations. Among the subjects under the ANVISA responsibility, the most frequent were related to medication and pharmacopoeia. Given the national repercussion involving the death of a patient of a plastic surgeon and digital influencer due to the use of a product authorized by the agency, most publications date from July. ANVISA should review its positioning with the press, expanding its role as a protagonist of the Brazilian health surveillance in the media. The results suggest trends in national coverage and may help improving the communication strategies not only of ANVISA, but also of other health institutions.


Assuntos
Humanos , Masculino , Feminino , Sistema Único de Saúde , Jornalismo , Agência Nacional de Vigilância Sanitária , Comunicação em Saúde , Meios de Comunicação de Massa
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA