Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2024 Apr 4:6:1362646.
doi: 10.3389/fspor.2024.1362646. eCollection 2024.

Validity and reliability of the My Jump 2 app for detecting interlimb asymmetry in young female basketball players

Nenad Stojiljković  1 , Dušan Stanković  1 , Vladan Pelemiš  2 , Nebojša Čokorilo  3 , Mihai Olanescu  4 , Miruna Peris  5 , Adrian Suciu  4 , Alin Plesa  4
Affiliations

Validity and reliability of the My Jump 2 app for detecting interlimb asymmetry in young female basketball players

Nenad Stojiljković et al. Front Sports Act Living. .

Abstract

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).

Conclusion: The My Jump 2 app is a valid and reliable tool to assess drop jump performance and interlimb asymmetry in young female basketball players.

Keywords: mobile application; physical performance; testing; unilateral, muscle imbalances; vertical jump.

PubMed Disclaimer

Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Drop jump (A) and single-leg drop jump (B).
Figure 2
Figure 2
Level of agreement (Bland–Altman) with 95% limits of agreement (dashed lines) and the mean difference (solid line) between force plate and My Jump 2 app for DJ with both legs.
Figure 3
Figure 3
Level of agreement (Bland–Altman) with 95% limits of agreement (dotted lines) and the mean difference (solid line) between Force plate and My Jump 2 app in the jump height (right leg).
Figure 4
Figure 4
Level of agreement (Bland–Altman) with 95% limits of agreement (dotted lines) and the mean difference (solid line) between force plate and My Jump 2 app in the jump height (left leg).
See this image and copyright information in PMC

References

    1. Ciacci S, Bartolomei S. The effects of two different explosive strength training programs on vertical jump performance in basketball. J Sports Med Phys Fitness. (2018) 10(58):1375–82. 10.23736/S0022-4707.17.07316-9 - DOI - PubMed
    1. Ziv G, Lidor R. Vertical jump in female and male basketball players—a review of observational and experimental studies. J Sci Med Sport. (2010) 13(3):332–9. 10.1016/j.jsams.2009.02.009 - DOI - PubMed
    1. Abdelkrim NB, El Fazaa S, El Ati J. Time–motion analysis and physiological data of elite under-19-year-old basketball players during competition. Br J Sports Med. (2007) 41(2):69–75. 10.1136/bjsm.2006.032318 - DOI - PMC - PubMed
    1. Talpey S, Smyth A, O'Grady M, Morrison M, Young W. The occurrence of different vertical jump types in basketball competition and their relationship with lower-body speed-strength qualities. J Strength Cond Res. (2021) 1(1):1–7. 10.47206/ijsc.v1i1.52 - DOI
    1. Bishop C, Turner A, Read P. Effects of inter-limb asymmetries on physical and sports performance: a systematic review. J Sports Sci. (2018) 36(10):1135–44. 10.1080/02640414.2017.1361894 - DOI - PubMed

LinkOut - more resources