Accuracy and reliability of GPS devices for measurement of movement patterns in confined spaces for court-based sports

Duffield, R; Reid, M; Baker, J; Spratford, W

Accuracy and reliability of GPS devices for measurement of movement patterns in confined spaces for court-based sports

Duffield, R

Reid, M Baker, J Spratford, W

Permalink

Publication Type:: Journal Article
Citation:: Journal of Science and Medicine in Sport, 2010, 13 (5), pp. 523 - 525
Issue Date:: 2010-09-01

Closed Access

	Filename	Description	Size
	2012006469OK.pdf		248.05 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Duffield, R https://orcid.org/0000-0002-5641-1314	en_US
dc.contributor.author	Reid, M	en_US
dc.contributor.author	Baker, J	en_US
dc.contributor.author	Spratford, W	en_US
dc.date.available	2009-07-21	en_US
dc.date.issued	2010-09-01	en_US
dc.identifier.citation	Journal of Science and Medicine in Sport, 2010, 13 (5), pp. 523 - 525	en_US
dc.identifier.issn	1440-2440	en_US
dc.identifier.uri	http://hdl.handle.net/10453/28469
dc.description.abstract	The aim of this study was to assess the accuracy and reliability of global positioning system (GPS) measures of distance and speed, compared to a high-resolution motion analysis system, for confined movement patterns used in many court-based sports. A single male participant performed 10 repetitions of four respective drills replicating court-based movement patterns and six repetitions of a random movement drill that replicated tennis match-play movement patterns. Two 1. Hz and two 5. Hz GPS devices concurrently measured distance covered and speed of all court-based drills. A 22 camera VICON motion analysis system, operating at 100. Hz, tracked the position of an 18 mm reflective marker affixed to one of the GPS devices to provide the criterion movement data. Results indicated that both 1 and 5. Hz GPS devices under reported distance covered as well as both mean and peak speed compared to the VICON system (P< 0.05). The coefficient of variation for both GPS devices for distance and speed measures ranged between 4 and 25%. Further, the faster the speed and more repetitive the movement pattern (over a similar location), the greater the measurement error. The inter-unit reliability for distance and speed measures of both 1 and 5. Hz systems for movements in confined spaces was generally low to moderate (r= 0.10-0.70). In conclusion, for court-based sports or movements in confined spaces, GPS technology under reports distance covered and both mean and peak speed of movement. © 2009 Sports Medicine Australia.	en_US
dc.relation.ispartof	Journal of Science and Medicine in Sport	en_US
dc.relation.isbasedon	10.1016/j.jsams.2009.07.003	en_US
dc.subject.classification	Sport Sciences	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Monitoring, Ambulatory	en_US
dc.subject.mesh	Reproducibility of Results	en_US
dc.subject.mesh	Equipment Failure	en_US
dc.subject.mesh	Task Performance and Analysis	en_US
dc.subject.mesh	Tennis	en_US
dc.subject.mesh	Geographic Information Systems	en_US
dc.subject.mesh	Adult	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Athletic Performance	en_US
dc.title	Accuracy and reliability of GPS devices for measurement of movement patterns in confined spaces for court-based sports	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	13	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
utslib.for	1116 Medical Physiology	en_US
utslib.for	1117 Public Health and Health Services	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	13	en_US

Abstract:

The aim of this study was to assess the accuracy and reliability of global positioning system (GPS) measures of distance and speed, compared to a high-resolution motion analysis system, for confined movement patterns used in many court-based sports. A single male participant performed 10 repetitions of four respective drills replicating court-based movement patterns and six repetitions of a random movement drill that replicated tennis match-play movement patterns. Two 1. Hz and two 5. Hz GPS devices concurrently measured distance covered and speed of all court-based drills. A 22 camera VICON motion analysis system, operating at 100. Hz, tracked the position of an 18 mm reflective marker affixed to one of the GPS devices to provide the criterion movement data. Results indicated that both 1 and 5. Hz GPS devices under reported distance covered as well as both mean and peak speed compared to the VICON system (P< 0.05). The coefficient of variation for both GPS devices for distance and speed measures ranged between 4 and 25%. Further, the faster the speed and more repetitive the movement pattern (over a similar location), the greater the measurement error. The inter-unit reliability for distance and speed measures of both 1 and 5. Hz systems for movements in confined spaces was generally low to moderate (r= 0.10-0.70). In conclusion, for court-based sports or movements in confined spaces, GPS technology under reports distance covered and both mean and peak speed of movement. © 2009 Sports Medicine Australia.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/28469