Assessment of accuracy, reliability and force measurement errors for a tethered swimming apparatus.

Psycharakis, Stelios, Paradisis, Giorgos and Zacharogiannis, Elias (2011) Assessment of accuracy, reliability and force measurement errors for a tethered swimming apparatus. International Journal of Performance Analysis in Sport, 11 (3). pp. 410-416. ISSN 1474-8185

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Researchers frequently use purpose-built devices to calculate propulsive forces during tethered swimming. Although such devices are subject to force measurement errors, no specific methods have been suggested in the swimming literature for the estimation of these errors. The purpose of this study was to access the accuracy and reliability of a portable device that is used to measure propulsive forces in tethered swimming, and to estimate the errors caused by hysteresis, sensitivity and linearity. The force values recorded during a maximum front crawl test of an international level swimmer were used to provide an example of the extent to which measurement errors could affect the values collected during a tethered swimming study. The calculations revealed small and acceptable errors. When summing the errors from all sources, the total errors affecting the minimum, average and peak forces recorded during the case study were 1.15%, 0.94% and 0.86% respectively. It is recommended that investigators always calculate and report such errors for tethered swimming studies. The methods used in the present study are reasonably simple and not time-consuming, and could be used when assessing errors for similar tethered swimming devices.

Item Type: Article
Print ISSN: 1474-8185
Electronic ISSN: 1474-8185
Uncontrolled Keywords: biomechanics; kinetics; front crawl; propulsive forces;
University Divisions/Research Centres: Faculty of Health, Life & Social Sciences > School of Life, Sport and Social Sciences
Dewey Decimal Subjects: 700 Arts & recreation > 790 Sports, games & entertainment > 797 Aquatic & air sports
Library of Congress Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
Item ID: 5268
Depositing User: Dr. Stelios Psycharakis
Date Deposited: 11 May 2012 13:45
Last Modified: 11 May 2012 13:45

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