Kinematic Parameters in Rope Jumping and Prediction of Interpersonal Coordination among Students1

Rope jumping enhance coordination and doing joint rope jumping successfully requires precise temporal and spatial coordination. The aim of this study was to investigate the kinematics parameters in rope jumping plan and prediction of interpersonal coordination among elite players. In the applied research, 12 rope jumping available elite girls (13-18 years) were subjects of it. The participants practiced the different rope jumping tasks (individual and joint rope jumping in different distances with online landing) for one month, until they could do them properly and without online feedback (Seeing or hearing each other). The researcher used a Vicon motion analysis device with six infrared cameras capable of 120 frames per seconds to record three- dimensional movements of the legs and rope whirling. The results of one- way ANOVA showed that with enough practice, even in the absence of feedback, hand-foot deviation time and timing variation in rope whirling of joint groups reached an equal level while their movement time, jump height and Landing Position showed a significant difference. The rope jumping, angular momentum and body vertical displacement are combined. In the other hand, placing and timing are important. So increasing difficulty and demand of joint task, amount of intra and interpersonal coordination will increase and coupling and anticipation power varied depending on joint and individual task constraints.