Laterality of toe grip strength in Kendo players.

[Purpose] The purpose of this study was to determine whether unilateral dominance exists in toe grip strength in Kendo players using a toe grip dynamometer. [Participants and Methods] In total, 15 male college Kendo players, who had no disability or pain in their feet, were included in the study. The participants completed a questionnaire to determine which foot the participants used as their front and rear foot while standing in Kendo.

Validity and clinical significance of a clinical method to measure femoral anteversion.

Background: An increased femoral anteversion may be a risk factor for patellofemoral pain and is measured by Craig's Test clinically using a goniometer. However, its validity has not been examined. The purpose of the present study was to examine the validity of Craig's Test, with those measured using computed tomography (CT), and to investigate the relationship between femoral anteversion and knee external rotation.

Inter-rater reliability and validity of angle measurements using smartphone applications for weight-bearing ankle dorsiflexion range of motion measurements.

Objectives: The purpose of this study was to examine the inter-rater reliability, validity, and error of angle measurements for ankle dorsiflexion range of motion while in the weight-bearing position using a smartphone application.

Design: Reliability and validity study.

Setting: Measurement positions were performed by one experienced examiner.

Correlation between isometric shoulder strength and racket velocity during badminton forehand smash movements: study of valid clinical assessment methods.

[Purpose] The purpose of this study was to confirm the correlation between racket velocity during the forehand smash movements with shoulder extensor strength and internal rotator strength in the neutral and abducted positions. [Subjects and Methods] Fourteen collegiate badminton players participated in the study. Measurements were performed shoulder strength, using torque calculated from the upper extremity length and the isometric force, and racket velocity during the forehand smash movements.