Carlos-Vivas Jorge, Martin-Martinez Juan P, Hernandez-Mocholi Miguel A, Perez-Gomez Jorge
Faculty of Sport Sciences, University of Extremadura, Caceres, Spain -
UCAM Research Center for High Performance Sport, Murcia, Spain -
J Sports Med Phys Fitness. 2018 Mar;58(3):227-232. doi: 10.23736/S0022-4707.16.06664-0. Epub 2016 Sep 22.
Vertical jump performance has been evaluated with several devices: force platforms, contact mats, Vertec, accelerometers, infrared cameras and high-velocity cameras; however, the force platform is considered the gold standard for measuring vertical jump height. The purpose of this study was to validate an iPhone app called My Jump, that measures vertical jump height by comparing it with other methods that use the force platform to estimate vertical jump height, namely, vertical velocity at take-off and time in the air.
A total of 40 sport sciences students (age 21.4±1.9 years) completed five countermovement jumps (CMJs) over a force platform. Thus, 200 CMJ heights were evaluated from the vertical velocity at take-off and the time in the air using the force platform, and from the time in the air with the My Jump mobile application. The height obtained was compared using the intraclass correlation coefficient (ICC).
Correlation between APP and force platform using the time in the air was perfect (ICC=1.000, P<0.001). Correlation between APP and force platform using the vertical velocity at take-off was also very high (ICC=0.996, P<0.001), with an error margin of 0.78%.
Therefore, these results showed that application, My Jump, is an appropriate method to evaluate the vertical jump performance; however, vertical jump height is slightly overestimated compared with that of the force platform.
已经使用多种设备评估垂直跳跃表现：力平台、接触垫、维尔泰克纵跳摸高测试器、加速度计、红外摄像机和高速摄像机；然而，力平台被认为是测量垂直跳跃高度的金标准。本研究的目的是验证一款名为“My Jump”的iPhone应用程序，该程序通过与其他使用力平台估计垂直跳跃高度的方法（即起跳时的垂直速度和空中时间）进行比较来测量垂直跳跃高度。
共有40名运动科学专业学生（年龄21.4±1.9岁）在力平台上完成了五次反向纵跳（CMJ）。因此，使用力平台从起跳时的垂直速度和空中时间以及使用“My Jump”移动应用程序从空中时间评估了200次CMJ的高度。使用组内相关系数（ICC）比较获得的高度。
使用空中时间时，应用程序与力平台之间的相关性极佳（ICC = 1.000，P < 0.001）。使用起跳时的垂直速度时，应用程序与力平台之间的相关性也非常高（ICC = 0.996，P < 0.001），误差幅度为0.78%。
因此，这些结果表明，应用程序“My Jump”是评估垂直跳跃表现的一种合适方法；然而，与力平台相比，垂直跳跃高度略有高估。
