School of Exercise and Health, Shanghai University of Sport, Shanghai, China.
Canberra City Health Network, Canberra, Australia.
J Sports Med Phys Fitness. 2024 Nov;64(11):1200-1207. doi: 10.23736/S0022-4707.24.16187-7. Epub 2024 Jul 17.
Chronic ankle instability (CAI) poses challenges in sports. Textured insoles (TI) are a promising intervention for enhancing dynamic balance in CAI athletes. This study aimed to investigate the effects of TI on dynamic balance performance and ankle muscle activity in soccer players with and without CAI.
Thirty-eight soccer players (19 CAI, 19 non-CAI) participated. Participants performed a modified star excursion balance test (mSEBT) while wearing TI and standard insoles (SI). The %SEBT reach distance and electromyography (EMG) activity of tibialis anterior (TA), medial gastrocnemius (MG), and peroneus longus (PL) were measured during maximum reached in each direction of the mSEBT.
No significant effects or interactions were found between ankle conditions (CAI vs. non-CAI) or insole types (TI vs. SI) on %SEBT reach. However, CAI players showed greater MG activity in posteromedial and posterolateral direction (P=0.04, P=0.01).
Overall, the application of TI did not have immediate effects on dynamic balance performance or ankle muscle activity in either CAI or non-CAI soccer players. Nonetheless, CAI players seemed to employ a different ankle strategy involving the MG muscle, possibly to control stability during dynamic movement, particularly in the posteromedial and posterolateral directions.
慢性踝关节不稳定（CAI）在运动中带来挑战。纹理鞋垫（TI）是增强 CAI 运动员动态平衡的有前途的干预措施。本研究旨在调查 TI 对有和没有 CAI 的足球运动员动态平衡表现和踝关节肌肉活动的影响。
38 名足球运动员（19 名 CAI，19 名非 CAI）参与。参与者在穿着 TI 和标准鞋垫（SI）时进行改良星型偏移平衡测试（mSEBT）。在 mSEBT 的每个方向的最大伸展中测量 %SEBT 到达距离和胫骨前肌（TA）、内侧腓肠肌（MG）和腓骨长肌（PL）的肌电图（EMG）活动。
在 %SEBT 到达方面，踝关节状况（CAI 与非 CAI）或鞋垫类型（TI 与 SI）之间没有发现显著的影响或相互作用。然而，CAI 运动员在后内侧和后外侧方向的 MG 活动更大（P=0.04，P=0.01）。
总体而言，TI 的应用对 CAI 或非 CAI 足球运动员的动态平衡表现或踝关节肌肉活动没有立即影响。然而，CAI 运动员似乎采用了一种不同的踝关节策略，涉及 MG 肌肉，可能是为了在动态运动中控制稳定性，特别是在后内侧和后外侧方向。
