Department of Mechanical Engineering, Chung-Ang University, Seoul, Republic of Korea.
Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul, Republic of Korea.
PLoS One. 2023 Feb 10;18(2):e0281684. doi: 10.1371/journal.pone.0281684. eCollection 2023.
The shoe's collar plays a significant role in supporting the ankle during walking. Since the protective effect of the collar requires the circular embracing of the ankle and shank, a stiffer collar might be involved with increased circumferential ankle pressure (CAP). It is not clear how collar CAP affects walking performance. Therefore, this study was aimed at examining the influence of the collar CAP on the kinematics, dynamic stability, electromyography (EMG), and plantar pressure during normal walking.
Sixteen healthy male participants walked on a treadmill while wearing a custom-designed high-collar shoe with 10 (low), 30 (medium), and 60 mmHg (high) CAP conditions, and the joint angles, dynamic stability index, EMG, and plantar pressure were measured.
While the low CAP condition did not affect the ankle range of motion (ROM), The high CAP condition restricted both the ankle sagittal and frontal ROM, whereas the medium CAP condition limited only the ankle frontal ROM. The knee and hip ROM did not differ between conditions. The dynamic stability for the high and medium CAP cases was comparable but significantly higher than that of the low CAP condition. The ankle muscle activity and corresponding co-contraction increased with increasing CAP for gastrocnemius medialis (GM), soleus (SOL), peroneus longus (PL), tibialis anterior (TA) muscles in the weight acceptance and push-off phases but not in the single limb support. Knee muscle activity, including vastus lateralis (VL) and semitendinosus (SEMI) was similar between all conditions. A higher relative pressure was observed under the lateral aspect of the heel when walking in the high CAP condition.
The results suggest that a high-collar shoe with a high CAP may not be an appropriate choice for walking owing to the injury risk factors and limited walking efficiency. A medium CAP is associated with certain advantages and, thus, a superior choice for high-collar shoe design.
鞋帮在步行过程中对踝关节起到重要的支撑作用。由于鞋帮的保护作用需要环绕踝关节和小腿，因此更硬的鞋帮可能会导致踝关节周围压力（CAP）增加。目前尚不清楚鞋帮 CAP 如何影响步行表现。因此，本研究旨在探讨鞋帮 CAP 对正常行走时的运动学、动态稳定性、肌电图（EMG）和足底压力的影响。
16 名健康男性参与者在跑步机上穿着定制高帮鞋，鞋帮 CAP 分别为 10mmHg（低）、30mmHg（中）和 60mmHg（高），测量关节角度、动态稳定性指数、EMG 和足底压力。
低 CAP 条件不影响踝关节活动范围（ROM），而高 CAP 条件限制了踝关节矢状面和额状面 ROM，中 CAP 条件仅限制了踝关节额状面 ROM。膝关节和髋关节 ROM 在不同条件下没有差异。高 CAP 和中 CAP 病例的动态稳定性相当，但明显高于低 CAP 条件。在足跟接受和蹬离阶段，随着 CAP 的增加，踝关节肌肉活动和相应的协同收缩增加，但在单腿支撑阶段没有增加。股四头肌（GM）、比目鱼肌（SOL）、腓肠肌长肌（PL）和胫骨前肌（TA）在接受和蹬离阶段的肌肉活动和相应的协同收缩增加，但在单腿支撑阶段没有增加。股外侧肌（VL）和半腱肌（SEMI）等膝关节肌肉活动在所有条件下相似。在高 CAP 条件下行走时，观察到外踝下方的相对压力较高。
研究结果表明，高 CAP 的高帮鞋可能不适合行走，因为存在受伤风险因素和行走效率受限。中 CAP 与某些优势相关，因此是高帮鞋设计的更好选择。
