短期肌酸加载可以提高力量耐力,即使没有改变最大力量,RPE,疲劳指数,血乳酸和模式状态
Edilson Tadeu F Furtado1, João Paulo L DE Oliveira1, Isabela S B Pereira1
1Universidade Federal de Lavras, Departamento de Nutrição, Faculdade de Ciências da Saúde, Trevo Rotatório Professor Edmir Sá Santos, s/n, 37203-202 Lavras, MG, Brazil.
在训练有素的男性中,五天的肌酸补充剂通过增加重复和总工作来增强力量耐力. 然而,它并没有显著改善最大强度.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 营养生物化学 营养生物化学
背景情况:
- 肌酸是运动员中很受欢迎的补充剂,旨在提高力量和肌肉质量.
- 了解肌酸对力量表现不同方面的特定影响对于优化训练方案至关重要.
研究的目的:
- 调查为期五天的肌酸补充剂对训练有素男性最大力量和力量耐力的影响.
- 评估二次生理和感知反应,包括血乳酸,感知力的速度,疲劳指数和情绪状态.
主要方法:
- 这是一项双盲,安慰剂控制,随机交叉研究,涉及12名力量训练的男性.
- 参与者接受了为期五天的补充期,接受了肌酸 (20g肌酸+10g马尔托德克斯) 或安慰剂 (20g粉+10g马尔托德克斯).
- 测量包括最大力量 (1RM长椅压力),力量耐力 (在70%的1RM设置到失败),血乳酸,RPE,疲劳指数和情绪状态,评估了补充剂前和后的情绪.
主要成果:
- 与安慰剂相比,肌酸补充剂显著增加了重复到集中失败的重复次数 (Δ = +3.4次,p = 0.036) 和完成的总工作 (Δ = +199.5任意单位,p = 0.038).
- 在肌酸或安慰剂组中,没有观察到最大强度,血中乳酸水平,感知力的速度,疲劳指数或情绪状态的显著变化.
- 在肌酸组中,增加重复和总功能的效果大小是中等的 (g = 0.53和g = 0.52).
结论:
- 五天的肌酸加载阶段可以增强肌肉耐力,使个人能够进行更多的重复,并在抵抗运动期间产生更大的总体工作.
- 短期补充肌酸似乎不会显著改善最大力量或改变力量训练个体的关键生理和感知疲劳标记.
- 这些发现表明,在短时间的负载期内,肌酸的主要益处可能在于提高持续肌肉努力的能力,而不是达到峰值的力量生产.
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