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Effect of short foot exercise on lower-limb motor control function during single-leg standing in university students
Misaki Suzuki1, Hironobu Kuruma2, Kunihiro Kato3
1Department of Physical Therapy, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Japan; Department of Rehabilitation, Seikei-kai Chiba Medical Center, Japan.
Introduction:
Intrinsic foot muscles (IFMs) play an important role in lower-limb motor control, including biomechanics and neuromuscular control function. Short foot exercise (SFE) and toe curl exercise (TC) are methods used to train the IFMs, but their effect on lower-limb motor control has not been reported in previous studies. This study evaluated the effects of SFE and TC on lower-limb motor control function during single-leg standing (SLS).
Trial Design:
Randomized control trial.
Method:
Thirty-six participants with flatfoot were randomly assigned to the SFE or TC group and performed exercise for 8 weeks. The assessment items were navicular drop test, toe grip strength (TGS), plantar sensation, and SLS. In the SLS assessment, we measured the mean center of pressure (COP) amplitude in the anteroposterior (AP) and mediolateral (ML) directions, onset time of gluteus maximus (G. max) and gluteus medius (G. med), angle of forefoot/hindfoot protonation and hip adduction, and lateral pelvic shift. Mixed-model repeated-measures analysis of variance and Bonferroni corrections were performed in statistical analysis.
Results:
The SFE group showed significant differences between pre- and post-intervention for TGS (p < 0.001), COP ML (p = 0.039), and onset times of G. max (p = 0.015), and G. med (p < 0.001). The TC group showed no significant differences in all assessment items.
Conclusion:
Our finding suggests that SFE contributes to lower neuromuscular control function in people with flatfoot.
Trial Registration:
UMIN000049963.
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