RDJ指数(ReboundDropJumpingindex)是近年来日本学者提出的一种评价连续纵跳能力的新指标,根据受试者在压力传感器上跳的滞空时间和接地时间,由计算机自动评定受试者的连续纵跳能力,用RDJ指数表示。本实验对74名9～19岁男性青少年进行了为期1年的RDJ指数和垂直纵跳高度的追踪 The RDJ index (ReboundDropJumpingindex) is a new index proposed by Japanese scholars in recent years to evaluate the continuous longitudinal jump. According to the duration and grounding time of the subjects jumping on the pressure sensor, the computer automatically determines the continuous longitudinal Jump ability, expressed as RDJ index. In this study, 74 male adolescents aged 9-19 years were followed for a one-year RDJ index and a vertical vertical jump height