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

Abstract

[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. The shoulder extensor strength and internal rotator strength were measured in the neutral and abducted positions. [Results] The extension torque and internal rotation torque of the shoulder in the neutral position were not significantly correlated with racket velocity. Additionally, correlations between extension torque of the shoulder in the maximum abducted position and racket velocity were insignificant. However, the internal rotation torque of the shoulder in the abducted external rotated position was significantly correlated with racket velocity (r=0.652). [Conclusion] The shoulder internal rotator strength in the abducted external rotated position are suitable measurements for evaluating badminton players.

Effect of Fatigue on Biomechanical Variable Changes in Overhead Badminton Jump Smash

“…The badminton forehand overhead techniques are divided into three strokes: drop, clear, and smash. The stroke comprises clear, shoot, break, block, lift, push, and net (7). Also, the overhead smash movement is categorized into two groups, including the standing and jumping smashes (8).…”

Badminton Smash Basic Training Model

“…Furthermore, the technique of beating badminton that must be mastered is as follows: service punches, lob or clear blows, dropshot blows, smash blows, drive blows or horizontal and return service or return service. One technique for getting points or numbers is smash (Awatani, Takenori, et al, 2018). Smash is "a hard overhead blow, directed down strong, is the main attacking blow in badminton".…”