训练前多种成分或单独的碳水化合物在中年成年人中促进类似的抵抗训练结果:一项双盲随机对照试验
Joel Puente-Fernández1, Eneko Larumbe-Zabala2, Justin Roberts3
1Institute for Lifecourse Development, School of Human Sciences, Centre for Exercise Activity and Rehabilitation, University of Greenwich, Eltham, UK.
Journal of the International Society of Sports Nutrition
|June 13, 2025
概括
与单独的碳水化合物相比,咖啡因和植物性蛋白质的运动前补充剂对中年个体的身体组成或表现没有提供额外的好处. 两组人都经历了类似的改善脂肪质量,肌肉质量,和抵抗训练后的肌肉性能.
科学领域:
- 运动生理学 运动生理学
- 营养科学 营养科学
- 运动医学 运动医学
背景情况:
- 运动前补充剂旨在提高能量和运动表现.
- 这项研究研究了一种含咖啡因的植物性蛋白质补充剂与仅含碳水化合物的选择.
- 专注于对身体构成,肌肉生长 (肌肉缩) 和身体表现的影响.
研究的目的:
- 为了比较运动前补充剂与仅含碳水化合物补充剂的有效性.
- 评估对中年成年人身体构成,肌肉厚度和身体表现的影响.
- 为了确定前炼补充剂是否提供比碳水化合物补充剂更好的益处.
主要方法:
- 43名身体活跃的中年成人 (女性和男性) 被随机分为两组:训练前 (PREW) 或碳水化合物比较器 (COMP).
- 参与者接受了为期6周的耐力训练计划 (每周3次),在每次训练前15分钟服用30g的指定的补充剂.
- 测量包括身体组成 (脂肪/无脂肪质量),腰/部周长,肌肉厚度,力量,功率和耐力,在干预前后进行.
主要成果:
- 这两组都显著减少了脂肪质量,增加了无脂肪质量和肌肉厚度 (横向巨型,肘部曲器).
- 炼前组独一无二地显示出腰围的显著减少.
- 对于大多数结果,包括强度,功率和耐力改善,没有观察到运动前和碳水化合物组之间的显著差异.
结论:
- 在中年人群中,摄入健身前素食蛋白质基咖啡因补充剂并没有提供超出仅含碳水化合物补充剂的额外抵抗训练益处.
- 唯一的例外是,在预训练组中观察到的腰围减少更大.
- 仅仅抵抗训练,再加上任何一种选择,都会导致身体构成和身体表现的相似改善.
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