Efeito de duas diferentes frequências semanais de treinamento com pesos sobre a força muscular e pressão arterial em mulheres idosas normotensas

Abstract

Efeito de duas diferentes frequências semanais de treinamento com pesos sobre a força muscular e pressão arterial em mulheres idosas normotensasRenato Galindo da Silva Abstract -The aim of this study was to analyze the effect of two different weekly resistance training (RT) frequencies on muscle strength and blood pressure (BP) in normotensive older women. Thirty normotensive and physically independent older women participated in the study, which were divided into two groups: RT performed in two weekly sessions (G2X, n = 17; 67.6 ± 4.6 years; 69.7 ± 13.4 kg; 156.6 ± 5.8 cm) and three weekly sessions (G3X; n = 13; 68.7 ± 5.0 years; 69.8 ± 16.1 kg, 155.2 ± 7.8 cm). The RT program was composed by eight exercises for different muscle groups (upper limbs, trunk and lower limbs), lasting 24 weeks (two phases of 12 weeks each). In the first phase, exercises were performed in one set of 10-15 maximum repetitions per exercise, while in the second phase, two sets were performed. BP and muscle strength (1RM) measures were performed at pre-training and after 12 and 24 weeks of RT. Increases in total muscle strength (P < 0.05) were observed in both groups (G2X = 16.8% and G3X = 18.9%), with no difference between groups. On the other hand, no significant changes (P > 0.05) in systolic BP and diastolic BP were found in both groups. The results suggest that 24 weeks of a supervised RT program improve muscle strength without affecting BP in normotensive older women, regardless of frequency of two or three weekly sessions.Key words: Aging; Hemodynamics; Resistance training. G2X; n = 17; 67,6 ± 4,6 anos; 69,7 ± 13,4 kg; 156,6 ± 5,8 cm) e em três sessões semanais (G3X; n = 13; 68,7 ± 5,0 anos; 69,8 ± 16,1 kg; 155,2 ± 7,8 cm Resumo -O objetivo do presente estudo foi analisar o efeito de duas diferentes frequências semanais ao treinamento com pesos (TP) sobre a força muscular e pressão arterial (PA) em mulheres idosas normotensas. Trinta mulheres normotensas e fisicamente independentes foram divididas em dois grupos: TP realizado em duas sessões semanais (

Exercise and Dietary-Protein as a Countermeasure to Skeletal Muscle Weakness: Liverpool Hope University – Sarcopenia Aging Trial (LHU-SAT)

“…Nevertheless, as 45.1% of 14,807 older adults (>75 years) suffer chronic musculoskeletal pain (Cimas et al, 2018) refraining from heavy repetitive loading may be a more practical choice to maintain adherence long term. Similar to RE intensity, comparable improvements in strength are apparent with two compared to three weekly sessions in older adults (Silva et al, 2017; Stec et al, 2017).…”

Efeito de diferentes frequências de treinamento no desempenho de força máxima e hipertrofia muscular em indivíduos treinados

“…Apesar destas recomendações, sabe-se que a maioria dos estudos que compararam diferentes frequências de TF, foi realizada com indivíduos não treinados (GILLAM, 1981;HUNTER, 1985;GRAVES et al, 1988;BRAITH et al, 1989;BRAZELL et al, 1989;POLLOCK et al, 1993;CALDER et al, 1994;DERENNE et al, 1996;DEMICHELE et al, 1997;CARROLL et al, 1998;DIBREZZO et al, 2002;FAIGENBAUM et al, 2002;BURT et al, 2007;CANDOW e BURKE, 2007;ARAZI e ASADI, 2011;BENTON et al, 2011;FARINATTI et al, 2013;ORSATTI et al, 2013;GENTIL et al, 2015;PADILHA et al, 2015;SERRA et al, 2015;SUNAGA et al, 2016;SERRANO, 2016;BARCELOS, 2017;SILVA et al, 2017;TAVARES et al, 2017a;TURPELA et al, 2017), limitando assim a extrapolação dos seus resultados para indivíduos considerados treinados. Além disso, em boa parte destes estudos, o volume total de treinamento não foi equalizado para que estas comparações fossem realizadas (GILLAM, 1981;GRAVES et al, 1988;BRAITH et al, 1989;BRAZELL et al, 1989;HOFFMAN et al, 1990;POLLOCK et al, 1993;DEMICHELE et al, 1997;DERENNE et al, 1996;FAIGENBAUM et al, 2002;BURT et al, 2007;FARINATTI et al, 2013;ORSATTI et al...…”