Please use this identifier to cite or link to this item: doi:10.22028/D291-33652
Title: The Accuracy of a Low-Cost GPS System during Football-Specific Movements
Author(s): Schulze, Emiel
Julian, Ross
Skorski, Sabrina
Language: English
Title: Journal of Sports Science and Medicine
Volume: 20
Startpage: 126
Endpage: 132
Publisher/Platform: University of Uludag
Year of Publication: 2021
Free key words: Soccer
team sports
external load
precision
motion analysis
DDC notations: 610 Medicine and health
Publikation type: Journal Article
Abstract: An affordable player monitoring solution could make the evaluation of external loading more accessible across multiple levels of football (soccer). The present study aimed to determine the accuracy of a newly designed and low-cost Global Positioning System (GPS) whilst performing match-specific movement patterns. Sixteen professional male football players (24 ± 3 years) were assigned a GPS device (TT01, Tracktics GmbH, Hofheim, Germany) and completed two experimental trials. In each trial, a continuous protocol including seven movements (sideways cornering, diagonal cornering, accelerating, decelerating, backwards jogging, shuttle running, and skipping) adding up to 500 m, was completed. Time-motion data was compared with criterion distance and velocity (photo-cell timing gates and radar). Validity was assessed through the standard error of the estimate (SEE) and reliability through the coefficient of variation (CV; both with 95% confidence limits). For the total distance covered during the protocol, the system was found to be valid (SEE = 3.1% [2.2; 5.8]) and reliable (intra-device CV = 2.0% [1.2; 7.6]). Similar results were found for velocity (SEE = 3.4% [2.6; 4.8], CV = 4.7% [3.2; 8.5]). In conclusion, the present GPS system, a low-cost solution, was found to be a valid and reliable tool for measuring physical loading during football-specific movements.
DOI of the first publication: 10.52082/jssm.2021.126
Link to this record: urn:nbn:de:bsz:291--ds-336521
hdl:20.500.11880/31039
http://dx.doi.org/10.22028/D291-33652
ISSN: 1303-2968
Date of registration: 31-Mar-2021
Faculty: M - Medizinische Fakultät
Department: M - Sport- und Präventivmedizin
Professorship: M - Prof. Dr. Tim Meyer
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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