老年人VO2峰值,VO2恢复动力学和肌肉功能之间的关系
Rhiannon D Healy1, Cassandra Smith2, Mary N Woessner1
1Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia.
Gerontology
|September 3, 2023
概括
在健康的老年人中,更高的最大氧气吸收 (VO2峰值) 与更大的肌肉力量相关. 然而,心血管恢复速度 (VO2恢复动力学) 与力量或身体表现没有关联.
科学领域:
- 老年学是一门学科.
- 运动生理学 运动生理学
- 心血管健康 心血管健康
背景情况:
- 通过氧气 (VO2) 恢复动力测量心血管恢复效率,对于身体能力至关重要.
- 在患有慢性疾病的老年人中,更高的有氧能力 (VO2峰值) 和更快的VO2恢复动力与更好的肌肉力量和身体能力有关.
- 在健康的老年人中,VO2峰值,VO2恢复动力学和身体特征之间的关系仍未得到充分研究.
研究的目的:
- 研究最大氧气摄入量 (VO2峰值) 和VO2恢复动力与健康,社区生活的老年人肌肉力量和身体表现之间的关联.
主要方法:
- 一项涉及35名健康老年人 (平均年龄73岁) 的横截面研究.
- 参与者通过气体交换分析进行了分级运动测试,以评估VO2峰值和VO2恢复动力学.
- 使用1次重复的最大腿压力和握力来测量肌肉力量;使用物理性能测试 (PPT) 来评估体力表现.
主要成果:
- 在较高的VO2峰值和双腿强度 (r = 0.59,p < 0.001) 和握力 (r = 0.39,p < 0.03) 之间发现了显著的正相关性.
- 在VO2峰值和物理性能测试 (PPT) (p > 0.05) 之间没有观察到显著的关系.
- VO2恢复动力学与腿部强度,握力或PPT结果没有显著的关联 (p > 0.05).
结论:
- 在健康的老年人中,最大的氧气吸收 (VO2峰值) 与肌肉力量有关,但VO2恢复动力学并非如此.
- 肌肉强度可能是导致这种人群有氧能力的一个关键因素.
- 结果表明,优先考虑对老年人进行抵抗训练,确定肌肉力量较低,可能与有氧能力水平有关.
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