Reliability and validity of the Chronojump open-source jump mat system
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Título: | Reliability and validity of the Chronojump open-source jump mat system |
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Autor/es: | Pueo, Basilio | Penichet-Tomás, Alfonso | Jimenez-Olmedo, Jose Manuel |
Grupo/s de investigación o GITE: | Research in Physical Education, Fitness and Performance (RIPEFAP) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Didáctica General y Didácticas Específicas |
Palabras clave: | Instrument | Validity | Performance | Flight time | SWC | Vertical jump | Lower limb |
Área/s de conocimiento: | Educación Física y Deportiva |
Fecha de publicación: | 25-may-2020 |
Editor: | Institute of Sport (Warsaw) |
Cita bibliográfica: | Biology of Sport. 2020, 37(3): 255-259. doi:10.5114/biolsport.2020.95636 |
Resumen: | 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 ?. Bivariate Pearson's correlation coefficient (r) was used to examine validity. Effects were evaluated using non-clinical magnitude based 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 instruments (most likely trivial 0/100/0). Both instruments showed very good stability (? = 1.00, CV = 4.28±1.95%). The smallest worthwhile change and typical error values were 1.3 and 0.29 cm, respectively and therefore, the signal-to-noise ratio of both instruments was large: 4.5. Finally, almost perfect correlation between instruments was observed (r = 0.999, most likely positive 100/0/0). Chronojump can be regarded as a sensitive instrument to detect changes in jump height performance over the possible noise around the measure. The results supported the open-source jump mat to be a useful, valid and reliable, low-cost testing device to monitor variations in vertical jumping performance. |
URI: | http://hdl.handle.net/10045/107143 |
ISSN: | 0860-021X (Print) | 2083-1862 (Online) |
DOI: | 10.5114/biolsport.2020.95636 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © Institute of Sport. All articles are distributed under the terms of the Creative Commons Attribution Share Alike 4.0 License (https://creativecommons.org/licenses/by-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.5114/biolsport.2020.95636 |
Aparece en las colecciones: | INV - SCAPE - Artículos de Revistas INV - HEALTH-TECH - Artículos de Revistas |
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