title: Examinations of factors influencing toe grip strength.
abstract: [Purpose] This study examined the relationship between toe grip strength and its associated factors by focusing on factors that were suggested to have a relationship with toe grip strength in previous studies, aiming to clarify the factors influencing the toe grip strength of healthy women. [Subjects and Methods] Twelve healthy young women were selected for this study. Their toe grip strength, angular changes in their ankle joint during toe grip, maximum voluntary contraction activities of the rectus femoris, biceps femoris, and tibialis anterior muscles, and the medial head of the gastrocnemius muscles were measured using electromyography. Their toe curl ability, foot-arch height ratio, and weight were also measured. [Results] Multiple regression analysis demonstrated that the predictors of toe grip strength in the resulting model were foot-arch height ratio and the percentage of integrated electromyography (%IEMG) of the tibialis anterior muscle, as the dependent variables. This reveals that women whose tibialis anterior muscle %IEMG values and foot-arch height ratio are high have greater %IEMG values have greater toe grip strength. [Conclusion] These findings suggest a significant relationship between foot-arch height ratio and toe grip strength, with a reciprocal interaction. These findings further indicate that the risk of falls by the elderly could be decreased if toe grip strength were enhanced, by increasing the height of a low foot-arch with the help of an inserted insole.
authors.affiliation: Course of Rehabilitation, Department of Health Sciences, Tohoku Fukushi University, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Soma
authors.affiliation: Course of Physical Therapy, Department of Health Sciences, Kyoto Tachibana University, Japan.
authors.forename: Shin
authors.initials: S
authors.lastname: Murata
authors.affiliation: Course of Physical Therapy, Department of Health Sciences, Kyoto Tachibana University, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kai
authors.affiliation: Course of Rehabilitation, Department of Health Sciences, Tohoku Fukushi University, Japan.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nakae
authors.affiliation: Course of Rehabilitation, Department of Health Sciences, Tohoku Fukushi University, Japan.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Satou
authors.affiliation: Department of Health Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Murata
authors.affiliation: Course of Physical Therapy, Department of Health Sciences, Kyoto Tachibana University, Japan.
authors.forename: Junya
authors.initials: J
authors.lastname: Miyazaki
keywords: Healthy females; Impact factor; Toe grip strength