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首页> 外文期刊>Gait & posture >Control of body's center of mass motion relative to center of pressure during uphill walking in the elderly
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Control of body's center of mass motion relative to center of pressure during uphill walking in the elderly

机译：控制老年人上山步行时身体的质心运动相对于压力中心的运动

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Uphill walking places more challenges on the locomotor system than level walking does when the two limbs work together to ensure the stability and continuous progression of the body over the base of support. With age-related degeneration older people may have more difficulty in maintaining balance during uphill walking, and may thus experience an increased risk of falling. The current study aimed to investigate using gait analysis techniques to determine the effects of age and slope angles on the control of the COM relative to the COP in terms of their inclination angles (IA) and the rate of change of IA (RCIA) during uphill walking. The elderly were found to show IAs similar to those of the young, but with reduced self-selected walking speed and RCIAs (P < 0.05). After adjusting for walking speed differences, the elderly showed significantly greater excursions of IA in the sagittal plane (P < 0.05) and increased RCIA at heel-strike and during single limb support (SLS) and double limb support (DLS) in the sagittal plane (P < 0.05), and increased RCIA at heel-strike in the frontal plane (P < 0.05). The RCIAs were significantly reduced with increasing slope angles (P < 0.05). The current results show that the elderly adopted a control strategy different from the young during uphill walking, and that the IA and RCIA during walking provide a sensitive measure to differentiate individuals with different balance control abilities. The current results and findings may serve as baseline data for future clinical and ergonomic applications. (C) 2015 Elsevier B.V. All rights reserved.
机译：当两个肢体一起工作以确保身体在支撑基础上的稳定性和连续性发展时，上坡步行给运动系统带来的挑战比水平步行要多。患有与年龄有关的变性，老年人在上坡步行过程中可能难以保持平衡，因此跌倒的风险会增加。当前的研究旨在研究使用步态分析技术确定坡度和坡度对COM相对于COP的控制的影响，包括倾斜角度（IA）和上坡期间IA的变化率（RCIA）步行。发现老年人显示出与年轻人相似的IA，但自我选择的步行速度和RCIA降低（P <0.05）。调整步行速度差异后，老年人在矢状面中表现出明显的IA偏移（P <0.05），在脚后跟打击以及矢状面中的单肢支撑（SLS）和双肢支撑（DLS）期间，RCIA增加（P <0.05），并且在脚后跟打击时额叶的RCIA升高（P <0.05）。 RCIAs随着倾斜角的增加而显着降低（P <0.05）。当前的结果表明，老年人在上坡步行时采取了与年轻人不同的控制策略，步行时的IA和RCIA提供了一种敏感的措施来区分具有不同平衡控制能力的个人。当前的结果和发现可作为将来临床和人体工程学应用的基准数据。 （C）2015 Elsevier B.V.保留所有权利。

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