title: Kinematic analysis during toe-gripping strength exertion: angular changes in the ankle joint and leg muscle activities.
abstract: [Purposes] To investigate angular changes in the ankle joint and leg muscle activities during toe-gripping, and to examine the relationship between these changes and toe-gripping strength. [Subjects] Eleven healthy young women were selected. [Methods] We measured the toe-gripping strength, angular changes in the ankle joint, and leg muscle activities of all patients during toe-gripping. [Results] The mean change in the ankle angle in dorsiflexion from a neutral position was 3°, and a positive correlation was observed between this angle and toe-gripping strength (r = 0.61). Thus, toe-gripping strength increased with the angle of dorsiflexion. Regarding the leg muscle activities, activities of the tibialis anterior muscle and medial head of the gastrocnemius muscle demonstrated positive correlations with toe-gripping strength (r = 0.75 and r = 0.72, respectively). [Conclusion] These findings suggest that the ankle dorsiflexes in order to exert great toe-gripping strength, and the crural muscles contract simultaneously because of ankle fixation.
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: Angle of the ankle joint; Kinematic analyses; Toe-gripping strength