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前方姿势倾斜对跑步经济,动力学和肌肉激活的影响
Nina M Carson1, Daniel H Aslan2, Justus D Ortega1
1School of Applied Health, California State Polytechnic University Humboldt, Arcata, CA, United States of America.
PloS one
|May 29, 2024
概括
运行与一个大的前方倾斜恶化运行经济和增加肌肉需求. 更直立或适度的倾斜可能会提高能源效率和跑步性能.
科学领域:
- 生物力学 生物力学
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
背景情况:
- 运行经济,以设定的速度运行的能源成本,对于长途跑步性能至关重要.
- 跑步者的共同信念是,增加前进的姿势倾斜可以改善跑步经济.
- 然而,研究表明,过度向前倾斜可能会通过增加腿部肌肉工作负荷而对跑步经济产生负面影响.
研究的目的:
- 调查前进姿势偏角度和偏策略对运行经济的影响.
- 分析对跑步动力学和肌肉激活模式的影响.
主要方法:
- 十六名跑步者在跑步机上以一致的速度 (每秒3.58米) 跑.
- 参与者采用了三个姿势倾斜角度:直立,中等和最大.
- 他们采用了两种瘦身策略:从脚倾斜和从腰部倾斜.
- 测量了代谢能量消耗,腿部动力学和肌肉激活.
主要成果:
- 增加前置姿势 (高达8±2度) 显著增加了8%的代谢成本,表明运行经济减少.
- 向前倾斜也导致更大的部曲,并在立场阶段增加了 gluteus maximus 和 biceps femoris 肌肉的激活.
- 瘦身策略 (脚与干) 并没有显著改变姿势瘦身和运行经济之间的关系.
结论:
- 一个大的前进姿势倾斜减轻了运行经济,需要更多地依赖效率较低的延伸腿肌肉.
- 采用更直立或中等的前进姿势倾斜似乎更具能量最佳.
- 这些发现表明,优化姿势倾斜可能会提高跑步性能.
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