优化骑自行车姿势:上肢肌肉努力和空气动力学性能
Xiangru Li1, Peng Zhou1, Xin Zhang1
1Department of Mechanical and Aerospace Engineering,The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China.
概括
在骑自行车的人中,下臂角降低了空气动力阻力,但增加了上肢肌肉活动. 最佳的骑自行车姿势平衡了阻力减小和肌肉努力,以提高性能.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 人体生理学 人体生理学
背景情况:
- 骑自行车的研究往往忽略了上肢功能和姿势特定的疲劳.
- 业余骑自行车的人需要指导来平衡空气动力学和生理需求.
研究的目的:
- 检查空气动力学阻力和上肢肌肉活动之间的关系.
- 确定业余骑自行车者的最佳骑自行车姿势.
- 与生理需求平衡空气动力学效率.
主要方法:
- 九名男性休骑自行车者在风洞和EMG课程中进行了测试.
- 测量了6个上肢肌肉的阻力面积和表面电肌图 (EMG).
- 评估了10个前臂角的下降和帽子和手的位置.
主要成果:
- 在空气动力学阻力和复合EMG (R2 > 0.9) 之间发现了线性关系.
- 下臂前臂的角度减少了阻力,但增加了肌肉活动.
- 特定的肌肉 (例如,双臂,三臂) 在更的姿势中表现出增加的激活.
结论:
- 减少阻力与上肢肌肉活化增加线性相关.
- 滴滴手的位置在缩姿势中更有效;罩杯优化直立姿势.
- 结果指导骑自行车的人选择特定条件的姿势,以平衡空气动力学和生理负载.
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