Validity and reliability of “My Jump app” to assess vertical jump performance: A meta-analytic review

Abstract

This systematic review and meta-analysis aims to investigate whether the My Jump app produces valid and reliable results when measuring vertical jump height. To identify potential studies for inclusion in this systematic review and meta-analysis, a search strategy was implemented in the MEDLINE (via PubMed) and Web of Science databases. Meta-analyses of validity were performed in two ways: (1) mean and standard deviations were compared between the My Jump and criterion measurements to assess the agreement of raw scores; (2) correlation coefficients were used to determine the consistency of the rankings within-group in the My Jump and criterion measurements. The meta-analysis of reliability was conducted using intraclass correlation coefficients (ICC). Heterogeneity was determined by Cochrane’s Q statistic and its p-value, I-squared value, and tau-squared value. The risk of publication bias was explored using funnel plot symmetry, and asymmetries were confirmed using the extended Egger’s test. Following the identification of studies providing inclusion criteria, 12 studies were included in the present meta-analysis. The meta-analysis conducted for identifying the agreement between raw scores showed that there was no significant difference between My Jump and the criterion measurements. The meta-analysis for identifying the consistency of the rankings within-group indicated that there was a high correlation between My Jump and criterion devices. Additionally, it is found that the My Jump app had nearly perfect reliability scores. Consequently, this study showed that the My Jump app presented high agreement and consistency scores with reference methods.