PDF(Pubmed)
Abstract：
[Purpose] This study aimed to examine and verify temporal changes in lower limb joint action after 2 weeks of single-leg stance training under active restriction of knee movement. [Participants and Methods] The participants included 28 healthy adult females (mean age, 19.6 ± 1.0 years). A stabile meter was used to measure the center of pressure sway as an index of ankle joint action. In addition, a triaxial accelerometer was used to measure pelvic and knee sways as indices of hip and knee joint actions, respectively. We established two experimental groups: an active-restriction group and an unrestricted group. Measurements of lower limb joint actions were recorded thrice during single-leg stance exercises during the first session of practice, the third session 1 week later, and the sixth session 2 weeks later. [Results] Both groups exhibited shorter total trajectory lengths in sessions three and six than in the first session. The active restriction group showed less knee sway in later sessions, whereas the unrestricted group showed reduced pelvic sway in the third session. [Conclusion] Single-leg stance exercises with active restriction of knee movement may alter the strategy of lower limb joint action.
摘要：
[目的]本研究旨在检验和验证膝关节活动限制下单腿站立训练2周后下肢关节动作的时间变化。[参与者和方法]参与者包括28名健康成年女性(平均年龄，19.6±1.0年）。使用稳定计测量压力摇摆中心，作为踝关节动作的指标。此外,使用三轴加速度计来测量骨盆和膝盖摇摆，作为髋关节和膝关节动作的指标，分别。我们建立了两个实验组：主动限制组和非限制组。在第一次练习期间，在单腿姿势练习中记录了三次下肢关节动作的测量，一周后的第三届会议，和2周后的第六届会议。[结果]两组在第三和第六阶段的总轨迹长度均短于第一阶段。活动限制组在后期的膝盖摇摆较少，而无限制组则在第三次会议中显示骨盆摇摆减少。[结论]主动限制膝关节运动的单腿姿势练习可改变下肢关节动作策略。
