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http://dx.doi.org/10.18857/jkpt.2020.32.4.233

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

Jeon, In-Cheol (Department of Physical Therapy, College of Life and Health Science, Hoseo University, Research Institute for Basic Sciences, Hoseo University)

Publication Information

The Journal of Korean Physical Therapy / v.32, no.4, 2020 , pp. 233-237 More about this Journal

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.

Keywords

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

Citations & Related Records

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