| The Validity and Reliability of 5-hZ Global Positioning System Units to Measure Team Sport Movement Demands. | |
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MedLine Citation:
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PMID: 22310508 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Johnston, RJ, Watsford, ML, Pine, MJ, Spurrs, RW, Murphy, AJ, and Pruyn, EC. The validity and reliability of 5-Hz global positioning system units to measure team sport movement demands. J Strength Cond Res 26(3): 758-765, 2012-The purpose of this research was to investigate the validity and the reliability of 5-Hz MinimaxX global positioning system (GPS) units measuring athlete movement demands. A team sport simulation circuit (files collected from each unit = 12) and flying 50-m sprints (files collected from each unit = 34) were undertaken, during which the total distance covered; peak speed; player load; the distance covered; time spent and number of efforts performed walking, jogging, running, high-speed running, and sprinting were examined. Movement demands were also separately categorized into low-intensity activity, high-intensity running, and very high-intensity running. The results revealed that GPS was a valid and reliable measure of total distance covered (p > 0.05, percentage typical error of measurement [%TEM] < 5%) and peak speed (p > 0.05, %TEM 5-10%). Further, GPS was found to be a reliable measure of player load (%TEM 4.9%) and the distance covered, time spent, and number of efforts performed at certain velocity zones (%TEM <5% to >10%). The level of GPS error was found to increase along with the velocity of exercise. The findings demonstrated that GPS is capable of measuring movement demands performed at velocities <20 km·h, whereas more caution is to be exercised when analyzing movement demands collected by using GPS velocities >20 km·h. |
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Authors:
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Richard J Johnston; Mark L Watsford; Matthew J Pine; Robert W Spurrs; Aron J Murphy; Elizabeth C Pruyn |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-03 |
Journal Detail:
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Title: Journal of strength and conditioning research / National Strength & Conditioning Association Volume: - ISSN: 1533-4287 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9415084 Medline TA: J Strength Cond Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1Human Movement Department, School of Leisure, Sport, and Tourism, University of Technology, Sydney, New South Wales, Australia; and 2Sydney Swans Football Club, Sydney, New South Wales, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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