Yamagata Shunsuke, Yamaguchi Takeshi, Shinya Masahiro, Milosevic Matija, Masani Kei
Institute of Sport Science, ASICS Corporation, Kobe, Japan.
Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
R Soc Open Sci. 2024 Jan 31;11(1):230883. doi: 10.1098/rsos.230883. eCollection 2024 Jan.
Although various measures have been proposed to evaluate dynamic balance during walking, it is currently unclear which measures are most sensitive to dynamic balance. We aimed to investigate which dynamic balance measure is most sensitive to detecting differences in dynamic balance during walking across various gait parameters, including short- and long-term Lyapunov exponents ( and ), margin of stability (MOS), distance between the desired and measured centre of pressure (dCOP-mCOP) and whole-body angular momentum (WBAM). A total of 10 healthy young adults were asked to walk on a treadmill under three different conditions (normal walking, dual-task walking with a Stroop task as an unstable walking condition, and arm-restricted walking with arms restricted in front of the chest as another unstable walking condition) that were expected to have different dynamic balance properties. Overall, we found that of the centre of mass velocity, of the trunk velocity, of the hip joint angle, and the magnitude of the mediolateral dCOP-mCOP at heel contact can identify differences between tasks with a high sensitivity. Our findings provide new insights into the selection of sensitive dynamic balance measures during human walking.
尽管已经提出了各种措施来评估步行过程中的动态平衡，但目前尚不清楚哪些措施对动态平衡最为敏感。我们旨在研究在各种步态参数（包括短期和长期李雅普诺夫指数（和）、稳定裕度（MOS）、期望压力中心与测量压力中心之间的距离（dCOP-mCOP）以及全身角动量（WBAM））的步行过程中，哪种动态平衡测量方法对检测动态平衡差异最为敏感。共有10名健康的年轻成年人被要求在三种不同条件下（正常步行、以斯特鲁普任务作为不稳定步行条件的双任务步行，以及将手臂限制在胸前的手臂受限步行作为另一种不稳定步行条件）在跑步机上行走，预计这些条件具有不同的动态平衡特性。总体而言，我们发现质心速度的、躯干速度的、髋关节角度的以及足跟接触时中外侧dCOP-mCOP的大小能够以高灵敏度识别任务之间的差异。我们的研究结果为人类步行过程中敏感动态平衡测量方法的选择提供了新的见解。
