Respostas pressóricas pós-exercícios com pesos executados em diferentes sobrecargas por mulheres normotensas
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Data
2009-02-01
Autores
Gurjão, André Luiz Demantova [UNESP]
Salvador, Emanuel Péricles
Cyrino, Edilson Serpeloni
Gerage, Aline Mendes
Schiavoni, Durcelina
Gobbi, Sebastião [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Medicina do Exercício e do Esporte
Resumo
O treinamento com pesos (TP) vem sendo amplamente recomendado para a melhoria de alguns componentes da aptidão física relacionada à saúde. Mais recentemente, vem-se discutindo o impacto do TP em indivíduos com disfunções crônico-degenerativas como a hipertensão arterial. Assim, o objetivo deste estudo foi comparar o efeito de um programa de TP executado com diferentes sobrecargas sobre o comportamento da pressão arterial (PA) pós-exercício. Para tanto, 16 mulheres jovens (20,5 ± 1,5 anos) e aparentemente saudáveis, após ser submetidas a oito semanas de TP para equiparação dos níveis de condicionamento muscular, foram separadas, aleatoriamente, em dois grupos. A partir daí, cada grupo realizou 12 semanas de TP sob diferentes intensidades (GI = 3 X 6-8 RM e GII = 3 X 10-12 RM, respectivamente), com a freqüência de três sessões semanais em dias alternados. Medidas de PA foram obtidas em repouso, por meio do método auscultatório, e nos minutos 1, 5, 10 e 30 após o término de uma sessão de TP. ANOVA two way para medidas repetidas foi utilizada nas comparações entre grupos nos diferentes períodos de tempo, ao passo que o teste post hoc de Scheffé foi empregado para a identificação das diferenças específicas, sendo adotado nível de significância de 5%. Nenhuma diferença estatisticamente significante foi encontrada, tanto para a PA sistólica (PAS) quanto diastólica (PAD), na comparação entre os grupos. Todavia, o efeito hipotensivo do TP foi identificado somente no GI, a PAS apresentando redução significante, quando comparada com os valores de repouso, a partir do 10º minuto de recuperação pós-exercício (P < 0,05). Os resultados sugerem que a resposta hipotensiva pós-exercício acarretada pelo TP parece ser melhorada discretamente por protocolos de maior intensidade.
Resistance training (RT) has been widely recommended for improvement of some health-related physical fitness components. Recently, the impact of RT in individuals with chronic-degenerative dysfunctions such as hypertension has been discussed. Thus, the aim of this study was to compare the effects of one program of resistance training performed at different intensities on post-exercise blood pressure response. Therefore, sixteen apparently healthy young women (20.5 ± 1.5 year-old) were randomly separated in two groups after having been submitted to an eight-week RT for equalization of muscular fitness levels. Each group then performed 12 weeks of RT prescribed by one of two different-intensity protocols (GI = 3 x 6-8 RM; GII = 3 x 10-12 RM; three alternated days per week). Systolic (SBP) and diastolic (DBP) blood pressures were assessed at rest and at minutes 1, 5, 10 and 30 after training, through auscultatory technique. Two-way ANOVA for repeated measures was used for comparison between groups at the different moments, and Scheffé post-hoc test (a = 5%) was applied to point out where the differences occur. No significant statistical difference (P > 0.05) was found for SBP or DBP between groups at any moment. However, the RT hypotensive effect was observed only for GI, with the SBP showing a significant reduction when compared to rest values at minutes 10 and 30 of recovery (P < 0.05). In conclusion, only higher intensity resistance training can exert a slightly acute hypotensive effect on young females.
Resistance training (RT) has been widely recommended for improvement of some health-related physical fitness components. Recently, the impact of RT in individuals with chronic-degenerative dysfunctions such as hypertension has been discussed. Thus, the aim of this study was to compare the effects of one program of resistance training performed at different intensities on post-exercise blood pressure response. Therefore, sixteen apparently healthy young women (20.5 ± 1.5 year-old) were randomly separated in two groups after having been submitted to an eight-week RT for equalization of muscular fitness levels. Each group then performed 12 weeks of RT prescribed by one of two different-intensity protocols (GI = 3 x 6-8 RM; GII = 3 x 10-12 RM; three alternated days per week). Systolic (SBP) and diastolic (DBP) blood pressures were assessed at rest and at minutes 1, 5, 10 and 30 after training, through auscultatory technique. Two-way ANOVA for repeated measures was used for comparison between groups at the different moments, and Scheffé post-hoc test (a = 5%) was applied to point out where the differences occur. No significant statistical difference (P > 0.05) was found for SBP or DBP between groups at any moment. However, the RT hypotensive effect was observed only for GI, with the SBP showing a significant reduction when compared to rest values at minutes 10 and 30 of recovery (P < 0.05). In conclusion, only higher intensity resistance training can exert a slightly acute hypotensive effect on young females.
Descrição
Palavras-chave
exercícios com pesos, pressão arterial, saúde da mulher, weight exercises, blood pressure, women's health
Como citar
Revista Brasileira de Medicina do Esporte. Sociedade Brasileira de Medicina do Exercício e do Esporte, v. 15, n. 1, p. 14-18, 2009.