背景:短脚锻炼(SFE)可以与下蹲等动态功能任务相结合;但是,目前尚不清楚这种组合是否会增加内在的足部肌肉活动。
目的:本研究旨在调查和比较SFE在静态和动态功能任务中的外展肌(AbdH)活动。
方法:在静态任务期间分析了17名有和没有SFE的健康参与者的AbdH肌电图数据(坐,双腿站立,和单腿站立)和动态任务(双腿蹲,单腿深蹲,分开蹲下,和脚跟抬高)。使用SFE执行静态任务5秒,并且在执行SFE时执行了动态任务。使用Friedman和Wilcoxon符号秩检验比较了任务期间有无SFE的AbdH活性。
结果:在所有任务中,除脚跟抬高(P=0.163)外,有SFE的条件下AbdH活性均显着高于无SFE的条件(P<0.01)。单腿站立时SFE的AbdH活性明显高于坐姿,双腿站立,双腿深蹲(P<0.05)。单腿下蹲SFE期间的AbdH活性也显着大于坐姿(P=0.024)。在SFE期间,AbdH活性的任何其他任务间比较均未发现显着差异。在没有SFE的任务中,AbdH的活动显示,与单腿下蹲相比,坐着和双腿站立的水平明显较低,分开蹲下,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的活动(P<0.05)。
结论:结合动态任务,除了脚跟抬高任务,与没有SFE的动态任务相比,使用SFE可以更多地增加AbdH活动。然而,临床医生应注意,与将静态任务与SFE相结合相比,将动态任务与SFE相结合可能不会增加AbdH活性.
BACKGROUND: 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.
OBJECTIVE: This study aimed to investigate and compare the abductor hallucis muscle (AbdH) activity during SFE in static and dynamic functional tasks.
METHODS: 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.
RESULTS: 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).
CONCLUSIONS: 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.