Effects of moderate-velocity strength training on peak muscle power and movement velocity: do women respond differently than men?
Effects of moderate-velocity strength training on peak muscle power and movement velocity: do women respond differently than men?
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DOI：
10.1152/japplphysiol.01204.2004
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发表时间：
2005-11-01
影响因子：
3.3
通讯作者：
Hurley, BF
中科院分区：
文献类型：
--
作者：
Delmonico, MJ;Kostek, MC;Hurley, BF
在 30 名老年男性 [64 岁 (7 SD)] 和 32 名老年女性 [62 岁 (6 SD)] 中，检查了在给定绝对（力负荷）和相对（1 次重复最大阻力的相同百分比）阻力（负荷）下，为期 10 周的单侧膝关节伸展力量训练 (ST) 计划对峰值功率 (PP) 和峰值运动速度 (PV) 的影响。在使用 ST 时，在相同的绝对负荷 (P < 0.001) 和相对负荷 (P < 0.01) 下，男性和女性的 PP 均显着增加。当基线差异和年龄共变时，男性的相对 PP 显着高于女性 ST 的增加，分别为 1 次最大重复的 60% ( P < 0.01) 和 70% ( P < 0.001)。然而，当每个受试者都在相同的绝对负荷下进行测试，并且当 PP 针对受训膝伸肌的肌肉体积（即绝对肌肉力量质量）进行标准化时，女性增加了 9%（P < 0.05），而男性则没有变化。 ST 后，男性和女性的绝对 PV 均增加（P < 0.001），但相对 PV 显着降低（P < 0.05）。然而，当基线值和年龄共变时，ST 治疗后女性相对 PV 质量的下降明显少于男性 ( P < 0.01)，尽管差异很小。这些标准化数据表明，ST 诱导的 PP 增加取决于男性而非女性的肌肉肥大，这为我们之前的报告（Ivey FM、Tracy BL、Lemmer JT、NessAiver M、Metter EJ、Fozard JL 和 Hurley BF. J Gerontol A Biol Sci Med Sci 55：B152 - B157，2000）中提出的假设提供了进一步的支持，即改善与男性相比，女性的 ST 肌肉功能变化在更大程度上是由非肌肉质量适应引起的。
The effects of a 10-wk unilateral knee extension strength training (ST) program on peak power (PP) and peak movement velocity (PV), at given absolute ( force load) and relative ( same % of 1 repetition maximum) resistances ( loads), were examined in 30 older men [ 64 yr ( 7 SD)] and 32 older women [ 62 yr ( 6 SD)]. PP increased significantly in both men and women at the same absolute ( P < 0.001) and relative loads ( P < 0.01) with ST. Men had a significantly greater increase in relative PP than women with ST at 60% ( P < 0.01) and 70% ( P < 0.001) of 1 repetition maximum when covarying for baseline differences and age. However, when each subject was tested at the same absolute load and when PP was normalized for the muscle volume of the trained knee extensors (i.e., absolute muscle power quality), women increased by 9% ( P < 0.05), whereas men did not change. Both men and women increased their absolute PV ( P < 0.001) but decreased their relative PV significantly with ST ( P < 0.05). However, when baseline values and age were covaried, women had significantly less of a decrease in relative PV quality with ST than men ( P < 0.01), although the difference was small. These normalized data suggest that ST-induced increases in PP depend on muscular hypertrophy in men, but not in women, providing further support for the hypothesis developed from our previous report (Ivey FM, Tracy BL, Lemmer JT, NessAiver M, Metter EJ, Fozard JL and Hurley BF. J Gerontol A Biol Sci Med Sci 55: B152 - B157, 2000) that improvements in muscle function with ST result from nonmuscle mass adaptations to a greater extent in women than men.