Reliability and validity of the Chronojump open-source
jump mat system

Basilio Pueo; Alfonso Penichet-Tomas; Jose Jimenez-Olmedo

doi:10.5114/biolsport.2020.95636

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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3/2020
vol. 37

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abstract:

Original paper

Reliability and validity of the Chronojump open-source jump mat system

Basilio Pueo

¹

,

Alfonso Penichet-Tomas

¹

,

Jose Manuel Jimenez-Olmedo

¹

Physical Education and Sport, University of Alicante, Spain

Biol Sport. 2020;37(3):255–259

DOI: https://doi.org/10.5114/biolsport.2020.95636

Online publish date: 2020/06/02

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Vertical jump performance is a commonly used test to measure lower-limb muscle power that is carried out with several types of equipment. The aim of this study was to validate an open-source jump mat (Chronojump Boscosystems) against a proprietary jump mat (Globus Ergo Tester). Sixty-three active sportsmen (age 23.3 ± 2.4 years) completed 8 maximal-effort countermovement jumps (CMJ). The heights of the 504 CMJ were measured from the two jump mats simultaneously. Reliability was examined with intra-class correlation coefficients (ICC), paired samples t-tests, coefficient of variation (CV) and Cronbach’s α. Bivariate Pearson’s correlation coefficient (r) was used to examine validity. Effects were evaluated using non-clinical magnitudebased inference. There was almost perfect agreement between instruments (ICC = 0.999−1.000, most likely positive 100/0/0). Paired t-test showed a mean difference of 0.03 ± 0.21 cm (90% CI -0.04 − -0.01) between

keywords:

Reliability and validity of the Chronojump open-source jump mat system

Basilio Pueo 1 , Alfonso Penichet-Tomas 1 , Jose Manuel Jimenez-Olmedo 1

Instrument Validity Performance Flight time SWC Vertical jump Lower limb

Basilio Pueo

¹

,

Alfonso Penichet-Tomas

¹

,

Jose Manuel Jimenez-Olmedo

¹