Roth S M, Ivey F M, Martel G F, Lemmer J T, Hurlbut D E, Siegel E L, Metter E J, Fleg J L, Fozard J L, Kostek M C, Wernick D M, Hurley B F
Department of Kinesiology, University of Maryland, College Park 20742, USA.
J Am Geriatr Soc. 2001 Nov;49(11):1428-33. doi: 10.1046/j.1532-5415.2001.4911233.x.
To examine the possible influences of age and gender on muscle volume responses to strength training (ST).
Prospective intervention study.
University of Maryland Exercise Science and Wellness Research Laboratories.
Eight young men (age 20-30 years), six young women (age 20-30 years), nine older men (age 65-75 years), and ten older women (age 65-75 years).
A 6-month whole-body ST program that exercised all major muscle groups of the upper and lower body 3 days/week.
Thigh and quadriceps muscle volumes and mid-thigh muscle cross-sectional area (CSA) were assessed by magnetic resonance imaging before and after the ST program.
Thigh and quadriceps muscle volume increased significantly in all age and gender groups as a result of ST (P < .001), with no significant differences between the groups. Modest correlations were observed between both the change in quadriceps versus the change in total thigh muscle volume (r = 0.65; P < .001) and the change in thigh muscle volume versus the change in mid-thigh CSA (r = 0.76, P < .001).
The results indicate that neither age nor gender affects muscle volume response to whole-body ST. Muscle volume, rather than muscle CSA, is recommended for studying muscle mass responses to ST.
研究年龄和性别对力量训练（ST）后肌肉体积反应的可能影响。
前瞻性干预研究。
马里兰大学运动科学与健康研究实验室。
8名年轻男性（20 - 30岁）、6名年轻女性（20 - 30岁）、9名老年男性（65 - 75岁）和10名老年女性（65 - 75岁）。
一项为期6个月的全身力量训练计划，每周3天锻炼上下半身所有主要肌肉群。
在力量训练计划前后，通过磁共振成像评估大腿和股四头肌的肌肉体积以及大腿中部肌肉横截面积（CSA）。
由于力量训练，所有年龄和性别组的大腿和股四头肌体积均显著增加（P < .001），各年龄组间无显著差异。股四头肌变化与大腿总肌肉体积变化之间（r = 0.65；P < .001）以及大腿肌肉体积变化与大腿中部CSA变化之间（r = 0.76，P < .001）均观察到适度相关性。
结果表明年龄和性别均不影响全身力量训练后的肌肉体积反应。建议使用肌肉体积而非肌肉CSA来研究力量训练后的肌肉质量反应。
