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Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition

Training prescription and monitoring of team-sport athletes rely on accurate quantification of player movement. Our aim was to determine the sensitivity, reliability and construct validity of measures derived from a wearable device incorporating Global Positioning System (GPS) and accelerometer tech...

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Autores principales: Howe, Samuel T., Aughey, Robert J., Hopkins, William G., Cavanagh, Bryce P., Stewart, Andrew M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7371171/
https://www.ncbi.nlm.nih.gov/pubmed/32687507
http://dx.doi.org/10.1371/journal.pone.0236024
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author Howe, Samuel T.
Aughey, Robert J.
Hopkins, William G.
Cavanagh, Bryce P.
Stewart, Andrew M.
author_facet Howe, Samuel T.
Aughey, Robert J.
Hopkins, William G.
Cavanagh, Bryce P.
Stewart, Andrew M.
author_sort Howe, Samuel T.
collection PubMed
description Training prescription and monitoring of team-sport athletes rely on accurate quantification of player movement. Our aim was to determine the sensitivity, reliability and construct validity of measures derived from a wearable device incorporating Global Positioning System (GPS) and accelerometer technology to quantify the peak periods of rugby competition. Match movement data were collected from 30 elite and 30 sub-elite rugby union players across respective competitive seasons. Accelerometer and GPS measures were analysed using a rolling average to identify peak movement for epochs ranging from 5 to 600 seconds. General linear mixed modelling was used to quantify the effects of playing position and match-half on the peak movement and variabilities within and between players represented reliability of each measure. Mean positional differences and match-half changes were assessed via standardisation and magnitude-based decisions. Sensitivity of measures was quantified via evaluation of ("signal") and typical error of measurement ("noise"). GPS and accelerometer measures had poor sensitivity for quantifying peak movement across all epochs and both levels of rugby union competition (noise 4× to 5× the signal). All measures displayed correspondingly low reliability across most epochs and both levels of competition (ICC<0.50). Construct validity was evident in mean differences between playing positions and match halves that were consistent with expected activity profiles in rugby union. However, it was clear from the pattern of differences across epoch durations and levels of competition that GPS and accelerometer measures provided different information about player movement. The poor sensitivity and low reliability of GPS and accelerometer measures of peak movement imply that rugby union players need to be monitored across many matches to obtain adequate precision for assessing individuals. Although all measures displayed construct validity, accelerometers provided meaningful information additional to that of GPS. We recommend using accelerometers alongside GPS to monitor and prescribe match respresentative training.
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spelling pubmed-73711712020-07-29 Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition Howe, Samuel T. Aughey, Robert J. Hopkins, William G. Cavanagh, Bryce P. Stewart, Andrew M. PLoS One Research Article Training prescription and monitoring of team-sport athletes rely on accurate quantification of player movement. Our aim was to determine the sensitivity, reliability and construct validity of measures derived from a wearable device incorporating Global Positioning System (GPS) and accelerometer technology to quantify the peak periods of rugby competition. Match movement data were collected from 30 elite and 30 sub-elite rugby union players across respective competitive seasons. Accelerometer and GPS measures were analysed using a rolling average to identify peak movement for epochs ranging from 5 to 600 seconds. General linear mixed modelling was used to quantify the effects of playing position and match-half on the peak movement and variabilities within and between players represented reliability of each measure. Mean positional differences and match-half changes were assessed via standardisation and magnitude-based decisions. Sensitivity of measures was quantified via evaluation of ("signal") and typical error of measurement ("noise"). GPS and accelerometer measures had poor sensitivity for quantifying peak movement across all epochs and both levels of rugby union competition (noise 4× to 5× the signal). All measures displayed correspondingly low reliability across most epochs and both levels of competition (ICC<0.50). Construct validity was evident in mean differences between playing positions and match halves that were consistent with expected activity profiles in rugby union. However, it was clear from the pattern of differences across epoch durations and levels of competition that GPS and accelerometer measures provided different information about player movement. The poor sensitivity and low reliability of GPS and accelerometer measures of peak movement imply that rugby union players need to be monitored across many matches to obtain adequate precision for assessing individuals. Although all measures displayed construct validity, accelerometers provided meaningful information additional to that of GPS. We recommend using accelerometers alongside GPS to monitor and prescribe match respresentative training. Public Library of Science 2020-07-20 /pmc/articles/PMC7371171/ /pubmed/32687507 http://dx.doi.org/10.1371/journal.pone.0236024 Text en © 2020 Howe et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Howe, Samuel T.
Aughey, Robert J.
Hopkins, William G.
Cavanagh, Bryce P.
Stewart, Andrew M.
Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title_full Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title_fullStr Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title_full_unstemmed Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title_short Sensitivity, reliability and construct validity of GPS and accelerometers for quantifying peak periods of rugby competition
title_sort sensitivity, reliability and construct validity of gps and accelerometers for quantifying peak periods of rugby competition
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7371171/
https://www.ncbi.nlm.nih.gov/pubmed/32687507
http://dx.doi.org/10.1371/journal.pone.0236024
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