o:35489 Validity and reliability of the My Jump 2 app for detecting interlimb asymmetry in young female basketball players en Introduction: 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. Methods: 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. Results: 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 (r = 0.99) and DJ contact time (r = 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 (p = 0.77). Inter-device reliability revealed almost perfect correlation for the DJ height (ICC = 0.99, r = 0.98). https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2024.1362646/full 1552099 10.3389/fspor.2024.1362646 1552101 2624-9367 2025-01-10T15:30:22.744Z 44 yes 46 Nenad Stojiljković Faculty of Sport and Physical Education, University of Niš Dušan Stanković Faculty of Sport and Physical Education, University of Niš person Vladan Pelemiš Teacher Education Faculty, University of Belgrade person 0000-0003-3461-0491 Nebojša Čokorilo Faculty of Sport, Union University-Nikola Tesla, Belgrade person Mihai Olanescu Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca person Miruna Peris Faculty Industrial Engineering, Robotics and Production Management, Technical University of Cluj-Napoca person Adrian Suciu Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca person Alin Plesa Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca person application/pdf 1971492 https://phaidrabg.bg.ac.rs/o:35489 no yes 1 70 92000001 11A42 Frontiers in Sports and Active Living 6 1 9 Frontiers Media 2024 https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2024.1362646/full