Toda Haruki, Nagano Akinori, Luo Zhiwei
Department of Rehabilitation, Kurashiki Heisei Hospital, Japan ; Graduate School of System Informatics, Kobe University, Japan.
Faculty of Sport and Health Science, Ritsumeikan University, Japan.
J Phys Ther Sci. 2015 Jun;27(6):1833-8. doi: 10.1589/jpts.27.1833. Epub 2015 Jun 30.
[Purpose] This study examined the relationships between joint moment and the control of the vertical ground reaction force during walking in the elderly and young male and female individuals. [Subjects and Methods] Forty elderly people, 65 years old or older (20 males and 20 females), and 40 young people, 20 to 29 years old (20 males and 20 females), participated in this study. Joint moment and vertical ground reaction force during walking were obtained using a 3D motion analysis system and force plates. Stepwise linear regression analysis determined the joint moments that predict the amplitude of the vertical ground reaction force. [Results] Knee extension moment was related to the vertical ground reaction force in the young males and females. On the other hand, in the elderly females, hip, ankle, and knee joint moments were related to the first peak and second peak forces, and the minimum value of vertical ground reaction force, respectively. [Conclusion] Our results suggest that the young males and females make use of the knee joint moment to control of the vertical ground reaction force. There were differences between the elderly and the young females with regard to the joints used for the control of the vertical ground reaction force.
[目的]本研究探讨了老年人以及青年男性和女性在行走过程中关节力矩与垂直地面反作用力控制之间的关系。[对象与方法]40名65岁及以上的老年人（20名男性和20名女性）和40名20至29岁的年轻人（20名男性和20名女性）参与了本研究。使用三维运动分析系统和测力板获取行走过程中的关节力矩和垂直地面反作用力。逐步线性回归分析确定了预测垂直地面反作用力幅度的关节力矩。[结果]在青年男性和女性中，膝关节伸展力矩与垂直地面反作用力有关。另一方面，在老年女性中，髋关节、踝关节和膝关节力矩分别与垂直地面反作用力的第一个峰值和第二个峰值以及最小值有关。[结论]我们的结果表明，青年男性和女性利用膝关节力矩来控制垂直地面反作用力。在用于控制垂直地面反作用力的关节方面，老年女性和青年女性之间存在差异。
