The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
The validity and reliability of an iPhone app for measuring vertical jump performance
Abstract
The purpose of this investigation was to analyse the concurrent validity and reliability of an iPhone app (called: My Jump) for measuring vertical jump performance. Twenty recreationally active healthy men (age: 22.1 ± 3.6 years) completed five maximal countermovement jumps, which were evaluated using a force platform (time in the air method) and a specially designed iPhone app. My jump was developed to calculate the jump height from flight time using the high-speed video recording facility on the iPhone 5 s. Jump heights of the 100 jumps measured, for both devices, were compared using the intraclass correlation coefficient, Pearson product moment correlation coefficient (r), Cronbach's alpha (α), coefficient of variation and Bland-Altman plots. There was almost perfect agreement between the force platform and My Jump for the countermovement jump height (intraclass correlation coefficient = 0.997, P < 0.001; Bland-Altman bias = 1.1 ± 0.5 cm, P < 0.001). In comparison with the force platform, My Jump showed good validity for the CMJ height (r = 0.995, P < 0.001). The results of the present study showed that CMJ height can be easily, accurately and reliably evaluated using a specially developed iPhone 5 s app.
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“The validity and reliability of the application has previously been proven [24].”
From Acute effects of brief mindfulness intervention coupled with carbohydrate ingestion to re-energize soccer players: a randomized crossover trial. (2020) · cites this paper as [24]
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“These jump tests were performed using the My Jump application, which has demonstrated acceptable validity (r = 0.995, p < 0.001) [33] and high reliability values (ICC > 0.80) [34].”
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“Vertical jump was used to assess lower-body muscular power and was calculated with the My jump 2 application [25].”
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“…Jump with Arms (CMJA), strength was the mobile application utilizing video recording through My Jump 2, with an intraclass correlation coefficient of 0.997, p < 0.001; Bland-Altman bias = 1.1±0.5 cm, p < 0.001, and validity for height r = 0.995, p < 0.001 (Balsalobre-Fernández et al., 2015).”
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“From the fl ight times, we estimated the jump height using the following equation: where h (m) is the jump height, ft (s) is the fl ight time, and g (9.8 m/s 2 ) is the acceleration due to gravity (Balsalobre-Fernandez et al., 2015).”
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Metadata
- Authors
- Balsalobre-Fernández, C., Glaister, M., & Lockey, R. A.
- Affiliations
- Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain
- St Mary's University Twickenham London (GB)
- ORCID
- Glaister, Mark
- Venue
- Journal of Sports Sciences
- Publisher
- Informa UK Limited
- Published
- 2015-01-02
- Volume
- 33
- Issue
- 15
- Pages
- 1574-1579
- ISSN
- 0264-0414 (ISSN-L)
- 1466-447X
- OpenAlex
- W2013598477
- Cited by
- 621
- References
- 31
- Citations by year
- 2026: 57 · 2025: 69 · 2024: 89 · 2023: 90 · 2022: 63 · 2021: 58 · 2020: 64 · 2019: 38 · 2018: 55 · 2017: 22 · 2016: 9 · 2015: 7
- FWCI
- 31.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Sports Sciences (publishedVersion)
- PubMed (publishedVersion)
- St Mary's University Repository (St Mary's University Twickenham London) (acceptedVersion)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Physical Education and Training Studies
- Physical Sciences › Engineering › Biomedical Engineering › Sports Dynamics and Biomechanics
- Keywords
- vertical jump, countermovement jump, iOS app, concurrent validity, test-retest reliability, high-speed video, jump height measurement, force plate
- MeSH terms
- Humans, Male, Movement, Reproducibility of Results, Lower Extremity, Athletic Performance, Young Adult, Mobile Applications
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