Examination of the difference of experience using force plates and EMG in straight punching

Abstract

Purpose: This study compared differences between two groups to determine instructional points for beginners. Subjects: The two groups were those with experience (n=5, aged 26.2 ± 6.1 years old) and without experience (n=5, aged 31.2 ± 1.2 years old) of boxing. Methods: The subjects were requested to hit the target immediately after a flash of light prompt with right hand straight punches. We divided the punching motion into four periods based on characteristics quantified using two force platforms and electromyography (EMG), and derived the punch motion speed, the trajectory displacement of center of foot pressure (COP), and the muscle activities. The measurement items were examined for significant differences between the two groups. Results: A significant difference was found in the total punch speed and the anterior-posterior motion in two of the periods, as well as the beginning of muscle activity of two muscles and the duration time of muscle activity of three muscles. Conclusion: These results provide guidance for straight-punching motion instruction for boxing beginners.