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增加步速降低了大学跑步者的峰值和累积内力
Thomas S Madden1, David A Hawkins
1Department of Mechanical Engineering, Montana State University, Bozeman, MT.
在大学跑步者中增加步速可以降低峰值内底力和累计加权峰值力 (CWPF) /公里. 这表明,步速调整可能有助于减少与跑步相关的伤害.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 运行科学 运行科学
背景情况:
- 跑步涉及重复的冲击力,可能导致受伤.
- 步速是运行力学中的一个关键参数,可以影响这些力.
- 了解步速与冲击力之间的关系对于预防伤害至关重要.
研究的目的:
- 为了研究增加步速如何影响高峰内力和累积加权高峰力 (CWPF) /公里在大学跑步者.
- 为了确定脚步速度变化期间的十字加速是否与内力相关.
主要方法:
- 十二名大学跑步运动员以首选速度完成了1000米的跑步,并且增加了10%的步速.
- 在运行过程中测量了内力量和十字加速.
- 使用累积损伤模型计算CWPF/km;统计分析比较不同步速的力,并将加速度与力相关联.
主要成果:
- 峰值内底力和CWPF/km随着步数的增加而显著下降 (P < 0.001).
- 峰值轴心圣骨加速与队列水平上的峰值内底力没有相关性 (r = 0.35,P = 0.109).
- 然而,在个体跑步者中观察到十字加速和内力之间的相关性 (平均r = 0.69-0.78,P < 0.05).
结论:
- 增加步速似乎减少了大学跑步者的峰值和累积负荷.
- 临床医生可能会考虑作为一种干预策略来缓解与跑步相关的伤害的步骤速度修改.
- 穿戴式加速度计的个性化校准可能是必要的,以准确评估与改变的步率冲击力变化.
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