Špela Bogataj (Author), Maja Bučar Pajek (Author), Vedran Hadžić (Author), Slobodan Andrašić (Author), Johnny Padulo (Author), Nebojša Trajković (Author)

Abstract

There is a persistent need in sport science for developing a measuring tool that is affordable, portable, and easy to use. We aimed to examine the concurrent validity and test–retest reliability of the My Jump 2 app compared to a validated OptoJump instrument for measuring jump performance during the squat jump (SJ), countermovement jump (CMJ), and CMJ free arms (CMJAM) in primary school children. A total of 48 participants (11–14 years age), volunteered to participate in this research. The jumps were recorded with a validated OptoJump photoelectric cell system and a concurrent device (iPhone X through My Jump 2 app) at the same time. The participants repeated the testing procedure after two weeks to assess the reliability of the measurements (ICC). Systematic bias between sessions and tools was evaluated using the paired samples t-test and Bland and Altman analysis. High test–retest reliability (ICC > 0.89) was observed for all measures’ in-between conditions. Very large correlations in the total sample were observed between the My Jump 2 app and OptoJump for SJ (r = 0.97, p = 0.001), CMJ (r = 0.97, p = 0.001), and CMJAM (r = 0.99, p = 0.001). Bland and Altman’s plot depicting limits of agreement for the total sample between the OptoJump and My Jump 2 show that the majority of data points are within the 95% CIs. The results of this study suggest that My Jump 2 is a valid, reliable, and useful tool for measuring jump performance in primary school children.

Keywords

šport;mladi;najstniki;adolescenti;skakanje;uspeh;športna vzgoja;testiranje;sport;young adolescents;jumping ability;assessment;physical education;testing;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FŠ - Faculty of Sport
UDC: 796.01-053.6
COBISS: 17296643 Link will open in a new window
ISSN: 1660-4601
Views: 202
Downloads: 51
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: šport;mladi;najstniki;adolescenti;skakanje;uspeh;športna vzgoja;testiranje;
Type (COBISS): Article
Pages: str. 1-12
Volume: ǂVol. ǂ17
Issue: ǂiss. ǂ10
Chronology: May 2020
DOI: 10.3390/ijerph17103708
ID: 14075141