前部负荷和行走表面对年轻成年人动态步行稳定的混合作用
Caroline Simpkins1, Jiyun Ahn1, Rebekah Buehler1
1Department of Kinesiology and Health, Georgia State University, Atlanta, GA, USA.
Journal of applied biomechanics
|October 27, 2023
概括
跑步机上行走准确地反映了地面上的稳定性,最高可达10%的体重前负荷. 然而,与地面相比,20%的体重负荷显著降低了跑步机的行走稳定性,从而质疑其用于步态分析的可互换性.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
背景情况:
- 跑步机上行走通常用于模拟研究中的地面行走.
- 跑步机用于研究载荷时的步态稳定性的有效性尚未得到充分证实.
研究的目的:
- 为了确定跑步机上行走是否准确地反映了携带前部负荷时的地面行走稳定性.
- 为了研究不同前部负荷百分比 (0%,10%,20%的体重) 在跑步机上与地面行走期间对步态稳定的影响.
主要方法:
- 30名年轻成年人根据前部负载百分比 (0%,10%,20%的体重) 被分为三组.
- 参与者在地面上和跑步机上行走,在触地和起飞时测量了动态步态稳定性.
- 二次测量包括步骤长度,步行速度和车身角度.
主要成果:
- 步行稳定性在跑步机和地面行走之间可比,体重负载为0%和10%.
- 20%的体重前负荷导致在跑步机上行走的稳定性明显降低,而不是在地面上行走.
- 车角度显示出与负载组和行走面相联系的显著差异.
结论:
- 跑步机行走是地面行走的有效替代品,用于评估步态稳定性,前部负荷高达10%的体重.
- 在评估稳定性时,体重20%的前部负荷可能会影响跑步机行走的有效性,作为地面行走的替代品.
- 研究人员在使用跑步机时应考虑负载大小,以研究携带负载的步态稳定性.
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