Ikeda Takuro, Oka Shinichiro, Nomura Naoki, Suzuki Akari, Matsuda Kensuke
Department of Physical Therapy, School of Health Sciences, International University of Health and Welfare, Fukuoka, JPN.
Department of Physical Therapy, Faculty of Rehabilitation, Reiwa Health Sciences University, Fukuoka, JPN.
Cureus. 2024 Dec 19;16(12):e76031. doi: 10.7759/cureus.76031. eCollection 2024 Dec.
Several studies have suggested that approximately 10 hours of inactivity can reduce motor performance. Specifically, restricted lower limb movement may impair postural stability, subsequently increasing the incidence of falls. However, the relationship between postural sway and its related factors remains unclear. This study investigated the relationship between postural sway in the upright standing position and foot sole sensitivity after short-term immobilization.
Healthy young adults were enrolled. Each participant's lower limb was immobilized for 10 hours using a soft bandage and a medical splint made from metal and soft urethane. The sway in the center of the pressure trajectory was measured before and after immobilization. Evaluation parameters included path length, mean velocity, and sway area. Foot sole sensitivity was assessed using an esthesiometer to measure two-point discrimination before cast application and immediately after cast removal.
After cast removal, total and anterior-posterior path lengths, mean velocity and sway area increased, whereas big toe sensitivity decreased. However, no significant correlations were observed among these factors.
Our results suggest that short-term movement restriction induces acute changes in center of pressure (COP) movement and foot sensitivity. However, the COP movement was not associated with foot sensation, indicating that another factor may contribute to postural sway after cast removal.
多项研究表明，约10小时的不活动会降低运动表现。具体而言，下肢活动受限可能会损害姿势稳定性，进而增加跌倒的发生率。然而，姿势摆动与其相关因素之间的关系仍不清楚。本研究调查了短期固定后直立站立姿势下的姿势摆动与足底敏感性之间的关系。
招募健康的年轻成年人。使用软绷带以及由金属和软聚氨酯制成的医用夹板将每位参与者的下肢固定10小时。在固定前后测量压力轨迹中心的摆动情况。评估参数包括路径长度、平均速度和摆动面积。在打石膏前和拆除石膏后立即使用触觉计测量两点辨别觉来评估足底敏感性。
拆除石膏后，总路径长度和前后路径长度、平均速度和摆动面积增加，而大脚趾敏感性降低。然而，这些因素之间未观察到显著相关性。
我们的结果表明，短期运动限制会引起压力中心（COP）运动和足部敏感性的急性变化。然而，COP运动与足部感觉无关，这表明在拆除石膏后可能有其他因素导致姿势摆动。
