胆和阻力训练对老年人力量和瘦身质量的影响
Chang Woock Lee1, Teak V Lee2, Elfego Galvan3
1Department of Health and Human Performance, Nursing and Counseling, University of Houston-Victoria, Victoria, TX 77901, USA.
Nutrients
|September 28, 2023
概括
低胆摄入量会阻碍耐力训练的老年人获得力量和肌肉增长. 足够的胆对于优化运动表现和老年人的肌肉适应至关重要.
科学领域:
- 营养科学 营养科学
- 运动生理学 运动生理学
- 老年学是一门学科.
背景情况:
- 胆对于乙胆的合成和肌肉功能至关重要.
- 以前的研究表明,低胆摄入量与抵抗运动训练后老年人力量/瘦身量增加的减少之间存在联系.
- 抵抗运动训练 (RET) 是改善老年人健康的关键干预措施.
研究的目的:
- 为了研究不同胆摄入水平在老年人12周RET计划期间对力量和肌肉质量增加的影响.
- 为了确定胆补充剂是否可以提高50-69岁年龄组对抗力训练的适应能力.
主要方法:
- 一项随机对照试验,涉及50至69岁的健康成年人,接受了为期12周的RET计划.
- 参与者被分为三组,接受低 (0.7 mg/kg瘦肉/d),中等 (2.8 mg/kg瘦肉/d) 或高 (7.5 mg/kg瘦肉/d) 胆补充剂.
- 通过每位参与者的>48个饮食日志来监测饮食摄入量,并使用1RM和瘦肉质量测量来评估力量/肌肉质量.
主要成果:
- 低胆摄入量显著降低了复合强度的增加 (腿部压力+胸部压力1RM) 与中高摄入量组相比 (19.4%对46.8-47.4%).
- 腿部肌肉质量 (1RM/瘦身量) 在低胆组 (12.3%) 与中/高胆组 (46.4%) 相比,改善明显较低.
- 在控制诸如瘦肉量,蛋白质,贝他因和维生素B12等共变量后,这些影响仍然显著.
结论:
- 低饮食胆摄入量与老年人抵抗运动训练后的力量减弱和肌肉质量改善有关.
- 足够的胆消费似乎是最大限度地提高肌肉适应运动的必要.
- 进一步的研究可能会探索参与力量训练的老年人最佳胆摄入水平.
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