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Reliability and validity of the Chronojump open-source jump mat system
Basilio Pueo1, Alfonso Penichet-Tomas1, Jose Manuel Jimenez-Olmedo1
1Physical Education and Sport, University of Alicante, Spain.
Biology of Sport
|September 4, 2020
Summary
The Chronojump open-source jump mat is a valid and reliable, low-cost tool for measuring vertical jump performance. It accurately detects changes in lower-limb muscle power, comparable to proprietary devices.
Area of Science:
- Sports Science
- Biomechanics
- Human Movement Analysis
Background:
- Vertical jump performance is a key indicator of lower-limb muscle power.
- Accurate measurement of vertical jump height is crucial for athletic assessment.
- Existing proprietary jump mats can be expensive, limiting accessibility.
Purpose of the Study:
- To validate the Chronojump Boscosystems, an open-source jump mat, against the proprietary Globus Ergo Tester.
- To assess the reliability and validity of the Chronojump for measuring vertical jump performance.
Main Methods:
- Sixty-three active sportsmen performed maximal-effort countermovement jumps (CMJ).
- Vertical jump heights were simultaneously measured using both Chronojump and Globus Ergo Tester.
- Statistical analyses included intra-class correlation coefficients (ICC), paired t-tests, coefficient of variation (CV), and Pearson's correlation (r).
Main Results:
- Near-perfect agreement (ICC = 0.999-1.000) and correlation (r = 0.999) were found between the two jump mats.
- Minimal mean difference (0.03 ± 0.21 cm) indicated high consistency.
- Both devices demonstrated excellent stability and a large signal-to-noise ratio, confirming Chronojump's sensitivity.
Conclusions:
- The Chronojump Boscosystems is a valid, reliable, and sensitive instrument for measuring vertical jump performance.
- This open-source device offers a cost-effective alternative for monitoring lower-limb muscle power variations.
- Chronojump is suitable for use in sports science and athletic training settings.
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