Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.

Use of the Global Positioning System (GPS) for quantifying athletic performance is common in many team sports. The effect of running velocity on measurement validity is well established, but the influence of rapid directional change is not well understood in team sport applications. This effect was...

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Autores principales:	Jonathan C Rawstorn, Ralph Maddison, Ajmol Ali, Andrew Foskett, Nicholas Gant
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/229d31bc225a40bca021c0dcd8d4c3f5
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spelling	oai:doaj.org-article:229d31bc225a40bca021c0dcd8d4c3f52021-11-18T08:23:25ZRapid directional change degrades GPS distance measurement validity during intermittent intensity running.1932-620310.1371/journal.pone.0093693https://doaj.org/article/229d31bc225a40bca021c0dcd8d4c3f52014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24733158/?tool=EBIhttps://doaj.org/toc/1932-6203Use of the Global Positioning System (GPS) for quantifying athletic performance is common in many team sports. The effect of running velocity on measurement validity is well established, but the influence of rapid directional change is not well understood in team sport applications. This effect was systematically evaluated using multidirectional and curvilinear adaptations of a validated soccer simulation protocol that maintained identical velocity profiles. Team sport athletes completed 90 min trials of the Loughborough Intermittent Shuttle-running Test movement pattern on curvilinear, and multidirectional shuttle running tracks while wearing a 5 Hz (with interpolated 15 Hz output) GPS device. Reference total distance (13 200 m) was systematically over- and underestimated during curvilinear (2.61±0.80%) and shuttle (-3.17±2.46%) trials, respectively. Within-epoch measurement uncertainty dispersion was widest during the shuttle trial, particularly during the jog and run phases. Relative measurement reliability was excellent during both trials (Curvilinear r = 1.00, slope = 1.03, ICC = 1.00; Shuttle r = 0.99, slope = 0.97, ICC = 0.99). Absolute measurement reliability was superior during the curvilinear trial (Curvilinear SEM = 0 m, CV = 2.16%, LOA ± 223 m; Shuttle SEM = 119 m, CV = 2.44%, LOA ± 453 m). Rapid directional change degrades the accuracy and absolute reliability of GPS distance measurement, and caution is recommended when using GPS to quantify rapid multidirectional movement patterns.Jonathan C RawstornRalph MaddisonAjmol AliAndrew FoskettNicholas GantPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e93693 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jonathan C Rawstorn Ralph Maddison Ajmol Ali Andrew Foskett Nicholas Gant Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
description	Use of the Global Positioning System (GPS) for quantifying athletic performance is common in many team sports. The effect of running velocity on measurement validity is well established, but the influence of rapid directional change is not well understood in team sport applications. This effect was systematically evaluated using multidirectional and curvilinear adaptations of a validated soccer simulation protocol that maintained identical velocity profiles. Team sport athletes completed 90 min trials of the Loughborough Intermittent Shuttle-running Test movement pattern on curvilinear, and multidirectional shuttle running tracks while wearing a 5 Hz (with interpolated 15 Hz output) GPS device. Reference total distance (13 200 m) was systematically over- and underestimated during curvilinear (2.61±0.80%) and shuttle (-3.17±2.46%) trials, respectively. Within-epoch measurement uncertainty dispersion was widest during the shuttle trial, particularly during the jog and run phases. Relative measurement reliability was excellent during both trials (Curvilinear r = 1.00, slope = 1.03, ICC = 1.00; Shuttle r = 0.99, slope = 0.97, ICC = 0.99). Absolute measurement reliability was superior during the curvilinear trial (Curvilinear SEM = 0 m, CV = 2.16%, LOA ± 223 m; Shuttle SEM = 119 m, CV = 2.44%, LOA ± 453 m). Rapid directional change degrades the accuracy and absolute reliability of GPS distance measurement, and caution is recommended when using GPS to quantify rapid multidirectional movement patterns.
format	article
author	Jonathan C Rawstorn Ralph Maddison Ajmol Ali Andrew Foskett Nicholas Gant
author_facet	Jonathan C Rawstorn Ralph Maddison Ajmol Ali Andrew Foskett Nicholas Gant
author_sort	Jonathan C Rawstorn
title	Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
title_short	Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
title_full	Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
title_fullStr	Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
title_full_unstemmed	Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.
title_sort	rapid directional change degrades gps distance measurement validity during intermittent intensity running.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/229d31bc225a40bca021c0dcd8d4c3f5
work_keys_str_mv	AT jonathancrawstorn rapiddirectionalchangedegradesgpsdistancemeasurementvalidityduringintermittentintensityrunning AT ralphmaddison rapiddirectionalchangedegradesgpsdistancemeasurementvalidityduringintermittentintensityrunning AT ajmolali rapiddirectionalchangedegradesgpsdistancemeasurementvalidityduringintermittentintensityrunning AT andrewfoskett rapiddirectionalchangedegradesgpsdistancemeasurementvalidityduringintermittentintensityrunning AT nicholasgant rapiddirectionalchangedegradesgpsdistancemeasurementvalidityduringintermittentintensityrunning
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Rapid directional change degrades GPS distance measurement validity during intermittent intensity running.

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