五周周期性碳水化合物饮食与高碳水化合物饮食相比,在训练有素的骑自行车者中没有改善最大乳酸盐稳定状态运动能力和基质氧化
Gorka Prieto-Bellver1, Javier Diaz-Lara1, David J Bishop2
1Performance and Sport Rehabilitation Laboratory, Faculty of Sport Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain.
Nutrients
|January 26, 2024
概括
耐力运动员定期摄入碳水化合物对持续高碳水化合物饮食没有任何好处. 这两种策略都改善了训练有素骑自行车者的最大乳酸平稳状态和身体组成.
科学领域:
- 运动营养 运动营养
- 运动生理学 运动生理学
- 耐力训练的适应性 耐力训练的适应性
背景情况:
- 对于耐力训练的碳水化合物操纵越来越感兴趣.
- 需要比较运动员的周期性碳水化合物摄入量与高碳水化合物饮食.
研究的目的:
- 分析定期碳水化合物养是否为训练有素的骑自行车者提供了高碳水化合物饮食的优势.
- 评估在不同的碳水化合物可用性策略下适应耐力训练的情况.
主要方法:
- 17名训练有素的骑自行车者被分为周期化碳水化合物 (PCHO) 和高碳水化合物 (HCHO) 组.
- 两组都接受了相同的5周的培训计划.
- PCHO组训练了13次低碳水化合物可用性;HCHO组保持了高的运动前糖原水平.
主要成果:
- 两组都显示出最大乳酸平稳状态 (MLSS) 的显著增加和身体组成的改善 (肌肉质量增加,体脂减少).
- 在疲劳的时间,碳水化合物/脂质氧化,心率或运动后的乳酸中没有观察到群体之间的显著差异.
- 与高碳水化合物饮食相比,定期摄入碳水化合物并没有产生更好的结果.
结论:
- 在训练有素的骑自行车者中,5周的周期性碳水化合物摄入策略并没有提供与能量匹配的高碳水化合物饮食相比更好的适应.
- 这两种饮食方法都支持最大乳酸稳定状态和身体成分的改善.
- 可能需要进一步的研究来探索潜在的长期或特定的绩效益.
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