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Validity and reliability of the Output sport device for assessing drop jump performance

The devices for measuring plyometric exercise in field conditions are becoming increasingly prevalent in applied research and practice. However, before the use of a device in an applied setting, the validity and reliability of such an instrument must be determined. The study aimed to assess the vali...

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Autores principales: Montoro-Bombú, Raynier, Field, Adam, Santos, Amândio Cúpido, Rama, Luis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9620392/
https://www.ncbi.nlm.nih.gov/pubmed/36324903
http://dx.doi.org/10.3389/fbioe.2022.1015526
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author Montoro-Bombú, Raynier
Field, Adam
Santos, Amândio Cúpido
Rama, Luis
author_facet Montoro-Bombú, Raynier
Field, Adam
Santos, Amândio Cúpido
Rama, Luis
author_sort Montoro-Bombú, Raynier
collection PubMed
description The devices for measuring plyometric exercise in field conditions are becoming increasingly prevalent in applied research and practice. However, before the use of a device in an applied setting, the validity and reliability of such an instrument must be determined. The study aimed to assess the validity and reliability of the Output Sport, an inertial measurement unit (IMU), through comparisons with a force plate for research purposes. A repeated measure test-retest study was performed. Reliability was assessed during single-session trials (i.e., intrasession reliability). A total of 34 national/university level athletes (13 females, 21 males) performed three drop jumps with a fall from 30 cm while both devices recorded ground contact time (GCT), flight time (FT), jump height (HJ), and reactive strength index (RSI). T-tests demonstrated that data collected from the IMU device were significantly different to the force platform for all reported variables (all p < 0.01). The intraclass correlation coefficients (ICC) demonstrated good-to-excellent reliability, but with a large range of confidence intervals (CI 95%) for GCT (0.825, 0.291–0.930), FT (0.928, 0.756–0.958), HJ (0.921, 0.773–0.964), and RSI (0.772, 0.151–0.907). The Bland-Altman test showed that the device overestimated contact times and underestimated the other variables. Upon landing, greater ground contact times (i.e., ≥0.355ms) were associated with higher reliability. These results suggest that a single IMU can be used to track changes somewhat accurately and reliably in jump metrics, especially when the GCT is greater than 0.355ms. It is recommended that before practitioners and trainers use the device as a cost-effective solution in the field, further research should be carried out to evaluate a range of data on the type of exercise to be performed.
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spelling pubmed-96203922022-11-01 Validity and reliability of the Output sport device for assessing drop jump performance Montoro-Bombú, Raynier Field, Adam Santos, Amândio Cúpido Rama, Luis Front Bioeng Biotechnol Bioengineering and Biotechnology The devices for measuring plyometric exercise in field conditions are becoming increasingly prevalent in applied research and practice. However, before the use of a device in an applied setting, the validity and reliability of such an instrument must be determined. The study aimed to assess the validity and reliability of the Output Sport, an inertial measurement unit (IMU), through comparisons with a force plate for research purposes. A repeated measure test-retest study was performed. Reliability was assessed during single-session trials (i.e., intrasession reliability). A total of 34 national/university level athletes (13 females, 21 males) performed three drop jumps with a fall from 30 cm while both devices recorded ground contact time (GCT), flight time (FT), jump height (HJ), and reactive strength index (RSI). T-tests demonstrated that data collected from the IMU device were significantly different to the force platform for all reported variables (all p < 0.01). The intraclass correlation coefficients (ICC) demonstrated good-to-excellent reliability, but with a large range of confidence intervals (CI 95%) for GCT (0.825, 0.291–0.930), FT (0.928, 0.756–0.958), HJ (0.921, 0.773–0.964), and RSI (0.772, 0.151–0.907). The Bland-Altman test showed that the device overestimated contact times and underestimated the other variables. Upon landing, greater ground contact times (i.e., ≥0.355ms) were associated with higher reliability. These results suggest that a single IMU can be used to track changes somewhat accurately and reliably in jump metrics, especially when the GCT is greater than 0.355ms. It is recommended that before practitioners and trainers use the device as a cost-effective solution in the field, further research should be carried out to evaluate a range of data on the type of exercise to be performed. Frontiers Media S.A. 2022-10-17 /pmc/articles/PMC9620392/ /pubmed/36324903 http://dx.doi.org/10.3389/fbioe.2022.1015526 Text en Copyright © 2022 Montoro-Bombú, Field, Santos and Rama. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Bioengineering and Biotechnology
Montoro-Bombú, Raynier
Field, Adam
Santos, Amândio Cúpido
Rama, Luis
Validity and reliability of the Output sport device for assessing drop jump performance
title Validity and reliability of the Output sport device for assessing drop jump performance
title_full Validity and reliability of the Output sport device for assessing drop jump performance
title_fullStr Validity and reliability of the Output sport device for assessing drop jump performance
title_full_unstemmed Validity and reliability of the Output sport device for assessing drop jump performance
title_short Validity and reliability of the Output sport device for assessing drop jump performance
title_sort validity and reliability of the output sport device for assessing drop jump performance
topic Bioengineering and Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9620392/
https://www.ncbi.nlm.nih.gov/pubmed/36324903
http://dx.doi.org/10.3389/fbioe.2022.1015526
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