Stojiljković Nenad, Stanković Dušan, Pelemiš Vladan, Čokorilo Nebojša, Olanescu Mihai, Peris Miruna, Suciu Adrian, Plesa Alin
Faculty of Sport and Physical Education, University of Niš, Niš, Serbia.
Teacher Education Faculty, University of Belgrade, Belgrade, Serbia.
Front Sports Act Living. 2024 Apr 4;6:1362646. doi: 10.3389/fspor.2024.1362646. eCollection 2024.
The aim of this study was to examine the validity and reliability of the My Jump 2 app for the assessment of interlimb jump asymmetry in young female basketball players.
Nine athletes (age 15 ± 0.9 years; weight 62.9 ± 5.8 kg; height 173.6 ± 6.1 cm) performed single-leg drop jumps (DJs) and both-leg drop jumps on a force plate (Kistler Quattro jump) and were simultaneously recorded on two smartphones using the My Jump 2 app. Jump height from flight time and contact time data were statistically analyzed to evaluate the validity of two different camera settings, drop jump performance, and interlimb jump asymmetry in basketball players. The testing was repeated after 1 week for test retest reliability.
High test-retest reliability [intraclass correlation coefficient (ICC) > 0.88] was observed in DJ height. High correlation between the force plate and the My Jump 2 app was observed in DJ height ( = 0.99) and DJ contact time ( = 0.98). For the interlimb jump height asymmetries, mean differences were 0.6 percentages for the My Jump 2 app and the force plate, respectively ( = 0.77). Inter-device reliability revealed almost perfect correlation for the DJ height (ICC = 0.99, = 0.98).
The My Jump 2 app is a valid and reliable tool to assess drop jump performance and interlimb asymmetry in young female basketball players.
本研究旨在检验My Jump 2应用程序在评估年轻女性篮球运动员肢体间跳跃不对称性方面的有效性和可靠性。
9名运动员（年龄15±0.9岁；体重62.9±5.8千克；身高173.6±6.1厘米）在测力板（奇石乐四通道跳跃测试系统）上进行单腿下蹲跳和双腿下蹲跳，并同时使用My Jump 2应用程序在两部智能手机上进行记录。对飞行时间和接触时间数据得出的跳跃高度进行统计分析，以评估两种不同相机设置、下蹲跳表现以及篮球运动员肢体间跳跃不对称性的有效性。1周后重复测试以检验重测可靠性。
下蹲跳高度的重测可靠性较高[组内相关系数（ICC）>0.88]。在单腿下蹲跳高度（r = 0.99）和单腿下蹲跳接触时间（r = 0.98）方面，测力板与My Jump 2应用程序之间存在高度相关性。对于肢体间跳跃高度不对称性，My Jump 2应用程序和测力板的平均差异分别为0.6个百分点（r = 0.77）。设备间可靠性显示单腿下蹲跳高度的相关性几乎完美（ICC = 0.99，r = 0.98）。
My Jump 2应用程序是评估年轻女性篮球运动员下蹲跳表现和肢体间不对称性的有效且可靠的工具。
