Brentano Michel A, Cadore Eduardo L, Da Silva Eduardo M, Ambrosini Anelise B, Coertjens M, Petkowicz Rosemary, Viero Itamara, Kruel Luiz F M
Grupo de Pesquisa em Atividades Aquáticas e Terrestres (GPAT), Exercise Research Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
J Strength Cond Res. 2008 Nov;22(6):1816-25. doi: 10.1519/JSC.0b013e31817ae3f1.
Strength training (ST; high intensity/low volume/long rest) has been used in several populations, including children, young adults, and older adults. However, there is no information about circuit weight training (CWT; low intensity/high volume/short rest) in apparently healthy postmenopausal women. The purpose of the present study was to analyze the effects of high-intensity ST and circuit training on isometric strength (IS), upper limb dynamic strength (ULS) and lower limb dynamic strength (LLS), muscle activation of quadriceps (EMG quad), maximal oxygen uptake (VO2 max), time to exhaustion (TE), and bone mineral density (BMD). Twenty-eight postmenopausal women were divided into 3 groups: 1) ST group (STG, n = 9, 45-80% 1 repetition maximum (1RM), 2-4 sets, 20-6 reps), 2) circuit training group (CTG, n = 10, 45-60% 1RM, 2-3 sets, 20-10 reps), and 3) a control group (CON, n = 9, no exercise). Significance level was defined as p <or= 0.05 for all analyses. After 24 weeks of training, increases were observed in STG and CTG. However, whereas in the STG, the IS (32.7%), ULS (28.7%), LLS (39.4%), EMG quad (50.7%), VO2 max (22%), and TE (19.3%) increased, CTG showed changes only in IS (17.7%), ULS (26.4%), LLS (42.2%), VO2 max (18.6%), and TE (16.8%). BMD did not change in any experimental group. In the CON, there were no changes in the variables analyzed. Our results suggest that ST and circuit training positively affect postmenopausal women's muscular strength, muscular activation, and cardiorespiratory fitness, with no changes in BMD.
力量训练（ST；高强度/低容量/长休息时间）已应用于多个群体，包括儿童、年轻人和老年人。然而，关于明显健康的绝经后女性进行循环重量训练（CWT；低强度/高容量/短休息时间）的信息却尚无报道。本研究的目的是分析高强度力量训练和循环训练对静力性力量（IS）、上肢动态力量（ULS）和下肢动态力量（LLS）、股四头肌肌肉激活（肌电图股四头肌）、最大摄氧量（VO2 max）、疲劳时间（TE）以及骨密度（BMD）的影响。28名绝经后女性被分为3组：1）力量训练组（STG，n = 9，45 - 80% 1次重复最大值（1RM），2 - 4组，每组20 - 6次重复），2）循环训练组（CTG，n = 10，45 - 60% 1RM，2 - 3组，每组20 - 10次重复），3）对照组（CON，n = 9，不进行运动）。所有分析的显著性水平定义为p≤0.05。经过24周的训练后，STG组和CTG组均有提高。然而，STG组的IS（提高32.）、ULS（提高28.7%）、LLS（提高39.4%）、肌电图股四头肌（提高50.%）、VO2 max（提高22%）和TE（提高19.3%）均有所增加，而CTG组仅在IS（提高17.7%）、ULS（提高26.4%）、LLS（提高42.2%）、VO2 max（提高18.6%）和TE（提高16.8%）方面有变化。任何实验组的BMD均未改变。在CON组中，所分析的变量均无变化。我们的结果表明，力量训练和循环训练对绝经后女性的肌肉力量、肌肉激活和心肺适能有积极影响，而BMD无变化。 7%）
