A cross-sectional study of single-leg drop landing test in junior male soccer players —focusing on the grade difference about center of pressure trajectory and shock absorbing technique—

Abstract

A single-leg drop landing test was conducted in 71 junior male soccer players. While there was no difference in the center of pressure (COP) trajectory length for the first 200 ms after contact among subjects of different grades, it tended to be shorter in the upper grades 5 seconds after contact. The maximal vertical ground reaction force was 5.19 to 6.82 times the body weight, and its time to peak tended to be shorter in the lower grades.