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生理学决定因素和能源系统对短距离和中距离自行车运动表现的贡献
Lars Erik Gjerløw1,2, Eva Maria Støa3, Jan Helgerud4,5
1Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway. lars.e.gjerlow@usn.no.
这项研究发现,有氧和无氧能量释放对骑自行车的表现有同等的贡献,大约73秒. 精英骑自行车者在较短时间内更依赖无氧能量,而有氧能量则主导了更长时间的骑自行车努力.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 人类表现的人类表现.
背景情况:
- 了解有氧和无氧能量系统之间的相互作用对于优化骑自行车性能至关重要.
- 这些系统的相对贡献因运动强度和持续时间而异.
研究的目的:
- 调查有氧和无氧能量释放对自行车性能在10至180秒的持续时间中的贡献.
主要方法:
- 18名男性骑自行车者 (从娱乐到精英) 参加了一项横截面研究.
- 测量包括骑自行车的氧气成本,氧气吸收峰值 (VO2峰值),最大冲刺功率 (MSP) 和五次计时试验 (10秒,30秒,60秒,120秒,180秒).
- 在时间试验中测量了VO2,最大累积氧气缺乏 (MAOD) 和血液乳酸 ([La-]) 等生理参数.
主要成果:
- 在73秒左右观察到有氧和无氧能量释放的50-50%分布.
- 在180秒后,贡献转移到71%的有氧和29%的无氧能量.
- 在180秒计时赛表现和最大冲刺功率 (MSP),最大有氧功率 (MAP) 和MAOD之间发现了强烈的相关性,表明了这两种系统的重要性.
结论:
- 有氧和无氧能量系统对自行车性能的相对贡献随时间的推移而显著变化.
- 最大累积氧缺 (MAOD) 迅速增加至60秒,然后高原,表明个体的最大无氧能力.
- 在较长时间试验中的表现受到最大有氧和无氧功率能力的强烈影响.
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