Condello Giancarlo, Khemtong Chutimon, Lee Yi-Hua, Chen Chi-Hsien, Mandorino Mauro, Santoro Enrico, Liu Chiang, Tessitore Antonio
Graduate Institute of Sports Training, Institute of Sports Sciences, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.
Department of Ball Sports, University of Taipei, 101 Zhongcheng Rd. Section 2, Shilin District, Taipei 111, Taiwan.
J Funct Morphol Kinesiol. 2020 Jul 22;5(3):55. doi: 10.3390/jfmk5030055.
The validity and reliability of the Optojump system were investigated for jumping height and flight time in vertical jump tests. Conversely, the purpose of the present study was to investigate the validity and reliability of the Optojump system for measuring contact time and lateral displacement in change of direction and lateral jump tests. Thirty basketball collegiate athletes were tested on two 10 m sprints with a 60° (COD60) or 180° (COD180) change of direction, lateral controlled (CLRJ) and maximal (MLRJ) rebound jump, and lateral countermovement (LCMJ) and squat (LSJ) jump with the concomitant use of two force plates and the Optojump system for the measurement of contact time in COD60, COD180, CLRJ, MLRJ, and lateral jumping distance in all the lateral jump tests. Almost perfect coefficients (r ≥ 0.95) emerged for contact time in COD60, COD180, CLRJ, MLRJ, although a systematic bias was found for COD60 (-0.01 s). Good-to-excellent reliability was found for almost all the measurements of contact time and lateral jumping distance for change of direction and lateral jump tests. Therefore, the use of Optojump system for testing change of direction and lateral jumping abilities should be executed with caution, avoiding misinterpretation of data.
针对垂直跳跃测试中的跳跃高度和飞行时间，对Optojump系统的有效性和可靠性进行了研究。相反，本研究的目的是调查Optojump系统在变向和侧向跳跃测试中测量接触时间和侧向位移的有效性和可靠性。30名大学篮球运动员进行了两次10米短跑测试，包括60°（COD60）或180°（COD180）变向、侧向控制（CLRJ）和最大（MLRJ）反弹跳跃，以及侧向反向运动（LCMJ）和深蹲（LSJ）跳跃，同时使用两个测力台和Optojump系统来测量COD60、COD180、CLRJ、MLRJ中的接触时间以及所有侧向跳跃测试中的侧向跳跃距离。COD60、COD180、CLRJ、MLRJ的接触时间出现了几乎完美的系数（r≥0.95），尽管发现COD60存在系统偏差（-0.01秒）。对于变向和侧向跳跃测试中几乎所有接触时间和侧向跳跃距离的测量，都发现了良好到优秀的可靠性。因此，在使用Optojump系统测试变向和侧向跳跃能力时应谨慎行事，避免对数据的错误解读。
