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Comparison of the Electromyographic Activity of the Tibialis Anterior and Isometric Dorsiflexor Strength during Dorsiflexion According to Toe Postures in Individuals with Ankle Dorsiflexor Weakness

대한물리치료학회지 2020년 32권 4호 p.233 ~ 237
전인철,
소속 상세정보
전인철 ( Jeon In-Cheol ) - Hoseo University College of Life and Health Science Department of Physical Therapy

Abstract


Purpose: This study compared the electromyographic activity of the tibialis anterior (TA) and isometric dorsiflexor strength during dorsiflexion according to the toe postures in individuals with ankle dorsiflexor weakness.

Methods: Twenty subjects with ankle dorsiflexor weakness participated in this study. The electromyographic activity of the TA and isometric dorsiflexor strength during dorsiflexion between with toe flexion, extension, and neutral postures were measured using an electromyography device and a hand-held dynamometer in individuals with ankle dorsiflexor weakness. One-way repeated measured analysis of variance, and a Bonferroni post hoc test was used. The level of statistical significance was set to α=0.01.

Results: The electromyographic activity of the TA was greater with toe flexion during dorsiflexion than with toe extension and neutral postures (p<0.01). The isometric dorsiflexor strength was smaller with toe flexion during dorsiflexion than with toe extension and neutral postures (p<0.01).

Conclusions: In individuals with ankle dorsiflexor weakness, the dorsiflexion with toe flexion can help improve the TA electromyographic activity. The toe posture during dorsiflexion for selective TA activation should be considered, especially in individuals with ankle dorsiflexor weakness.

키워드

Dorsiflexor weakness; Tibialis anterior; Toe postures; Isometric dorsiflexor strength

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