Faculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Faculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Gait Posture. 2024 Sep;113:498-503. doi: 10.1016/j.gaitpost.2024.08.008. Epub 2024 Aug 12.
Short foot exercise (SFE) can be combined with dynamic functional tasks such as squats; however, it is unclear whether this combination increases intrinsic foot muscle activity.
This study aimed to investigate and compare the abductor hallucis muscle (AbdH) activity during SFE in static and dynamic functional tasks.
The AbdH electromyography data of 17 healthy participants with and without SFE were analyzed during static tasks (sitting, double-leg standing, and single-leg standing) and dynamic tasks (double-leg squat, single-leg squat, split squat, and heel-raise). The static tasks were performed with SFE for 5 seconds, and the dynamic tasks were performed while performing SFE. AbdH activity with or without SFE during the task was compared using the Friedman and Wilcoxon signed-rank tests.
AbdH activity was significantly greater in conditions with SFE than in those without SFE for all tasks (P < 0.01) except for heel-raise (P = 0.163). AbdH activity during SFE in single-leg standing was significantly higher than that in sitting, double-leg standing, and double-leg squats (P < 0.05). AbdH activity during SFE in the single-leg squat was also significantly greater than that in the sitting position (P = 0.024). No significant differences were found in any other between-task comparisons of AbdH activity during SFE. AbdH activity during tasks without SFE revealed significantly lower levels for sitting and double-leg standing compared to single-leg squat, split squat, and heel-raise (P < 0.001). Additionally, the activity in double-leg squat was significantly lower than in both single-leg squat and heel-raise (P < 0.05).
Combining dynamic tasks, except for the heel-raise task, with SFE can increase AbdH activity more than dynamic tasks without SFE. However, clinicians should note that combining dynamic tasks with the SFE may not increase AbdH activity compared to combining static tasks with the SFE.
短足运动（SFE）可以与深蹲等动态功能任务结合，但尚不清楚这种结合是否会增加内在足部肌肉的活动。
本研究旨在比较 SFE 在静态和动态功能任务中对拇展肌（AbdH）活动的影响。
分析了 17 名健康参与者在静态任务（坐姿、双腿站立和单腿站立）和动态任务（双腿深蹲、单腿深蹲、分腿深蹲和脚跟抬高）中有无 SFE 时的 AbdH 肌电图数据。静态任务中进行 5 秒的 SFE，动态任务中进行 SFE 的同时进行。使用 Friedman 和 Wilcoxon 符号秩检验比较任务中有无 SFE 时的 AbdH 活动。
除脚跟抬高（P = 0.163）外，所有任务（P < 0.01）条件下 AbdH 活动均明显大于无 SFE 时。单腿站立时 SFE 期间的 AbdH 活动明显高于坐姿、双腿站立和双腿深蹲（P < 0.05）。单腿深蹲时 SFE 期间的 AbdH 活动也明显高于坐姿（P = 0.024）。在没有 SFE 的任务之间的任何其他 AbdH 活动比较中，没有发现显著差异。没有 SFE 的任务中，AbdH 活动的水平在坐姿和双腿站立时明显低于单腿深蹲、分腿深蹲和脚跟抬高（P < 0.001）。此外，双腿深蹲的活动明显低于单腿深蹲和脚跟抬高（P < 0.05）。
除脚跟抬高任务外，将动态任务与 SFE 结合使用可以比不与 SFE 结合的动态任务更能增加 AbdH 活动。然而，临床医生应注意，与结合静态任务相比，结合动态任务与 SFE 可能不会增加 AbdH 活动。
