Navegando por Palavras-chave "Esforço físico"
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- ItemAcesso aberto (Open Access)O efeito do exercício físico agudo com e sem suplementação aguda de cafeína sobre distintos domínios de funções executivas(Universidade Federal de São Paulo (UNIFESP), 2019-03-28) Silva, Vander Pereira [UNIFESP]; Pompéia, Sabine [UNIFESP]; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4728881J1; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4605417Y4; Universidade Federal de São Paulo (UNIFESP)Executive function is an umbrella term related to various aspects of quality of life that encompasses a series of correlated but dissociable cognitive processes that are related to the concept of attention and that allow the control of the behavior directed to a given goal. Research has pointed out that executive functioning can be improved by acute manipulations of physical activity and administration of caffeine. However, it is not clear what kind of executive function is favored by these manipulations are summative or synergistic., nor whether these effects occur together. The present study aimed to investigate the acute effects of physical activity (predominantly aerobic exercise [proof counter on a stationary, bicycle]) in combination with acute caffeine intake (6 mg / kg) in improving performance in three experimentally dissociable executive domains (inhibition, update and shifting) evaluated in two tasks: Random Number Generation – RNG, and Plus Minus Task. The sample consisted of 10 healthy young male volunteers, random order to two different conditions: acute physical exercise plus placebo or acute physical exercise plus caffeine. The executive performance was assessed before and after acute exercise combined with caffeine and placebo treatment. Regarding treatment administration, the study followed a double-blind, cross-over design. It was also evaluated the perception effort (Borg Scale) fatigue (Subjective Exercise Experiences Scale, SEES) and pain induced by exercise (Numeric Pain Rating Scale, NPRS) combined or not with caffeine. It was found that the exercise had a positive effect only on the executive domain of inhibition. The perception of exertion, fatigue and pain increased after exercise, and caffeine blocked post-exercise pain, although this treatment did not have an additional effect on exercise in any executive domain. Caffeine combined with exercise did not increase the effect of exercise on executive performance. It is concluded that the predominantly acute aerobic exercise exerts a positive effect on the executive domain of inhibition and that although the administered caffeine dose blocks the pain 30 minutes after the exercise, it has no nootropic effect on the executive functions.
- ItemAcesso aberto (Open Access)Sistema virtual como instrumento avaliativo do desempenho cardíaco em crianças saudáveis(Universidade Federal de São Paulo (UNIFESP), 2013) Moran, Cristiane Aparecida [UNIFESP]; Peccin, Maria Stella [UNIFESP]; Dal Corso, Simone [UNIFESP]; http://lattes.cnpq.br/9690847988531306; http://lattes.cnpq.br/0428199048138850; http://lattes.cnpq.br/7063936220885999Objetivo: Comparar a prevalencia das criancas que atingiram a frequencia cardiaca maxima e submaxima, o comportamento cardiaco, a percepcao de esforco e a motivacao entre o shuttle run teste e o sistema virtual. Metodo: Estudo de delineamento transversal, realizado de Fevereiro a Setembro de 2011. O desempenho cardiaco foi avaliado em criancas saudaveis de 8 a 10 anos de idade, pela frequencia cardiaca (repouso, media e maxima); a percepcao do esforco pela escala de Borg e pela Tabela Ilustrada de Valores. A motivacao foi avaliada de zero (nenhuma) a dez (maxima) no teste shuttle run e sistema virtual com o videogame interativo Nintendo Wii®. Resultados: Das 235 criancas estudadas, 87 (37%) atingiram a frequencia cardiaca maxima e 160 (68,1%) a frequencia cardiaca submaxima no sistema virtual. Ao compararmos o sistema virtual com o shuttle run a frequencia cardiaca maxima foi similar em ambos os testes e a FC media foi maior no sistema virtual. As criancas atingiram a FC maxima em 10 minutos de partida no sistema virtual. As escalas de percepcao do esforco se correlacionam e o Borg modificado se correlacionou com a FC maxima no shuttle run teste. Independente do teste as criancas se mantiveram motivadas, mas atribuiram maior pontuacao no videogame. Conclusao: A prevalencia das criancas que atingiram a FC maxima foi similar nos testes, porem mais criancas atingiram a FC submaxima no sistema virtual. Ao compararmos os testes nao encontramos diferenca na FC maxima, no entanto a FC media foi maior no sistema virtual. As criancas que concluiram o sistema virtual atingiram a FC maxima em dez minutos de partida. As escalas de percepcao se correlacionam e somente o Borg modificado se correlacionou com a FC maxima no SR teste. O sistema virtual pode ser considerado um instrumento motivacional.
- ItemAcesso aberto (Open Access)Variação da pressão intraocular após teste submáximo de força no treinamento resistido(Conselho Brasileiro de Oftalmologia, 2009-06-01) Conte, Marcelo [UNIFESP]; Scarpi, Marinho Jorge [UNIFESP]; Rossin, Reginaldo Alexandre; Beteli, Hélio Rubens; Lopes, Rodrigo Gustavo; Marcos, Haroldo Leão [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Escola Superior de Educação Física de Jundiaí; ESEFJPURPOSE: To verify the intraocular pressure (IOP) after sub-maximal strength test. METHODS: 145 Physical Education freshmen (22.04 ± 4.17 years old; female and male) from Superior Physical Education School of Jundiaí (ESEFJ) were evaluated in an observacional study. The exclusion criteria were: media opacity and eyeball absence or changes. All subjects agreed to take part in this research and signed up the Informed Consent. IOP was measured by Perkins tonometer: i) pretest: just before the submaximal strength test performance and ii) post-test: immediately after the strength test. The strength test consisted in the one-repetition-maximum-assessment through repetition until fatigue. Resistance training exercises such as bench press, pulley dorsal high, shoulder press, arm curl and leg press 45º were performed. Statistical analyses were obtained through paired Student's t test. RESULTS: Decrease of IOP was observed after the strength test: 13.48 ± 3.32 vs.10.20 ± 3.72 (p<0.001) in the right eye and 13.13 ± 3.96 vs.9.74 ± 3.33 (p<0.001) in the left eye. CONCLUSION: IOP showed relevant decrease after submaximal strength test performance in college students.