Evaluation of the Criterion-related Validity of Ankle Plantar Flexion Strength Measurement

Abstract

[Purpose] In this study, we investigated the criterion-related validity of ankle plantar force measurements made with a hand-held dynamometer (HHD). [Subjects] The subjects were 36 legs of 18 healthy adult males (average age 30.8±7.3). [Method] We measured ankle plantar flexion strength, knee extension strength, and vertical jump height. [Results] Significant correlations between ankle plantar flexion strength, and knee extension strength and vertical jumping distance were found. [Conclusion] The proposed, simple ankle plantar flexion strength measurement method met the external criterion validity, suggesting it is a convenient and useful measurement method.