耐力运动训练期间摄入多丰富的零食改善了氧化的生物可用性,但并没有改善男性骑自行车者的运动表现:一项随机对照试验
Noah Marc Adrian d'Unienville1, Alison M Coates1, Alison M Hill1,2
1Alliance for Research in Exercise, Nutrition and Activity (ARENA), UniSA Allied Health and Human Performance, University of South Australia, Adelaide, Australia.
Current developments in nutrition
|May 5, 2025
概括
杏仁,干葡萄和蔓越 (AGC) 并没有改善自行车性能,但增加了脂肪氧化和氧化 (NO) 生产. 这些发现表明,运动员的健康和福祉可能有好处.
科学领域:
- 运动营养 运动营养
- 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:
- 抗氧化剂和氧化 (NO) 前体可以通过减轻氧化应激和提高NO水平来增强耐力运动.
- 杏仁,干葡萄和蔓越 (AGC) 是这些有益化合物的公认来源.
研究的目的:
- 调查AGC消费对生理反应和耐力自行车表现在重训练和逐渐阶段的影响.
- 评估NO生物可用性,氧化应激标志物,肌肉损伤和主观幸福感的变化.
主要方法:
- 96名男性骑自行车者每天消耗125g的AGC或同热量的麦棒 (对照组) 在2周的重训练和2周的逐渐减速期间.
- 测量了性能 (5分钟的自行车时间试验),NO生物可用性 (酸盐/酸盐),氧化应激 (F2-异oprostanes),肌肉损伤 (肌酸激酶) 和生理反应.
主要成果:
- 与对照组相比,AGC并没有显著改变骑自行车计时试验的表现.
- 在亚最大运动期间,AGC消耗导致氧气消耗增加和呼吸交换比率降低.
- 虽然氧化应激标志物显示出不同的结果,但AGC在重训练期间增加了主观能量和尿酸盐水平.
结论:
- 补充AGC并没有提高耐力骑自行车的性能或运动效率.
- 然而,AGC消费增加了脂肪氧化,NO生物可用性和主观能量水平,可能为健康和福祉带来优势.
- 需要进一步的研究来探索AGC对运动员的更广泛的健康影响.
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