Efeitos agudos e cr??nicos do treinamento de for??a sobre fatores de risco cardiovascular em mulheres de meia idade portadoras de sobrepeso/obesidade e/ou s??ndrome metab??lica.

• Autor(a) principal: Tibana, Ramires Alsamir
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UCB
• Texto Completo: https://bdtd.ucb.br:8443/jspui/handle/tede/2009
• topic: Exerc??cios f??sicos; Mulheres de meia idade; Obesidade; Press??o arterial; Frequ??ncia card??aca; CIENCIAS DA SAUDE::EDUCACAO FISICA

The aim of the present study was to evaluate the acute and chronic effects of resistance training (RT) on cardiovascular risk factors in women with overweight/obesity and/or metabolic syndrome. This study was divided in four steps: (1) systematic review to elucidate the effectiveness of RT to prevent and treatment of cardiovascular risk factors in patients with metabolic syndrome (MetS); (2) to evaluate the clinical and ambulatory behavior of blood pressure (BP) after a acute RT session completed between 08:00-09:00 p.m. and of a control session in women with overweight/obesity; (3) to evaluate the clinical and ambulatory behavior of BP, and heart rate variability (HRV) after an acute RT session completed between 08:00-09:00 p.m. and a control session in women with Met and (4) to evaluate the effects of a eightweek RT without dietetic control on the risk factors of MetS in women with overweight/obesity. Methods: Sedentary women (18-49 years) with and without risk factors for MetS participated in this study. Volunteers were submitted to a acute RT session with six exercises (machine leg press, leg extension, leg curl, machine chest, frontal lat pull-down and machine shoulder press) with 3 sets of 10 repetitions and an intensity of 60% of one repetition maximum (1RM). After the acute RT and control session (35 minutes in the seated position) systolic (SBP) (PAS), diastolic (DBP) and mean blood pressure (MBP) were clinically monitored during 60 minutes and after this, the ambulatory monitor of BP (MAPA) was inserted to the non dominant arm to the analysis of SBP, DBP and MBP during 24h. The HRV was monitored after the RT session during 60 minutes post-exercise. The chronic study was performed during eight weeks (3x) of RT for the whole body with a intensity of 8-12 repetitions maximum and 1 minute rest interval between exercises and sets. Before and after the eight weeks anthropometric, biochemical, BP and muscle strength evaluations were completed. Results: Collectively, these data demonstrated that an acute RT session is capable of decreasing clinical and ambulatory BP both in women with overweight/obesity and MetS, with similar autonomic response post exercise in with and without MetS. Moreover, the eight-week RT without dietetic control and aerobic exercise presented a low effectiveness in modifying blood glucose, BP, waist circumference, triglycerides and HDL. However, short-term RT was effective in increasing absolute and relative muscle strength and muscle volume of the quadriceps. Conclusions: An acute RT session is capable if decreasing clinical and ambulatory BP in women with overweight /obesity and MetS. However, chronic RT without dietetic control did not decrease cardiovascular risk factor in women with MetS.