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. 2019 Jan 30;7(1):e11099.
doi: 10.2196/11099.

Assessing the Validity of the MyJump2 App for Measuring Different Jumps in Professional Cerebral Palsy Football Players: An Experimental Study

Victor Coswig #  1 , Anselmo De Athayde Costa E Silva  1 , Matheus Barbalho  2 , Fernando Rosch De Faria  3 , Claudio D Nogueira  3 , Mariane Borges  3 , Jéssica R Buratti  3 , Ivaldo B Vieira  4 , Francisco Javier López Román  5 , José I Gorla  3
Affiliations

Assessing the Validity of the MyJump2 App for Measuring Different Jumps in Professional Cerebral Palsy Football Players: An Experimental Study

Victor Coswig et al. JMIR Mhealth Uhealth. .

Abstract

Background: Vertical jumps can be used to assess neuromuscular status in sports performance. This is particularly important in Cerebral Palsy Football (CP Football) because players are exposed to high injury risk, but it may be complicated because the gold standard for assessing jump performance is scarce in field evaluation. Thus, field techniques, such as mobile apps, have been proposed as an alternative method for solving this problem.

Objective: This study aims to evaluate the reliability of the measures of the MyJump2 app to assess vertical jump performance in professional CP Football.

Methods: We assessed 40 male CP Football athletes (age 28.1 [SD 1.4] years, weight 72.5 [SD 6.2] kg, and height 176 [SD 4.2] cm) through the countermovement jump (CMJ) and squat jump (SJ) using a contact mat. At the same time, we assessed the athletes using the MyJump2 app.

Results: There were no significant differences between the instruments in SJ height (P=.12) and flight time (P=.15). Additionally, there were no significant differences between the instruments for CMJ in jump height (P=.16) and flight time (P=.13). In addition, it was observed that there were significant and strong intraclass correlations in all SJ variables varying from 0.86 to 0.89 (both P<.001), which was classified as "almost perfect." Similar results were observed in all variables from the CMJ, varying from 0.92 to 0.96 (both P ≤.001).

Conclusions: We conclude that the MyJump2 app presents high validity and reliability for measuring jump height and flight time of the SJ and CMJ in CP Football athletes.

Keywords: cerebral palsy football; jump performance; mobile apps; mobile phone; paralympic sports.

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Conflict of interest statement

Conflicts of Interest: None declared.

Figures

Figure 1
Figure 1
Bland-Altman for agreement analysis of squat jumps.
Figure 2
Figure 2
Correlation for agreement analysis of squat jumps.
Figure 3
Figure 3
Bland-Altman for agreement analysis of countermovement jumps.
Figure 4
Figure 4
Correlation for agreement analysis of countermovement jumps.
See this image and copyright information in PMC

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