Journal article
The influence of test distance on change of direction speed test results
Journal of strength and conditioning research, Vol.29(9), pp.2412-2416
2015
Abstract
This study assessed the relationships between linear running velocity and change of direction (CoD) ability, and how assessing CoD ability over distances ≤ 5 m influences test reliability. Participants (n=15) from amateur rugby league teams performed three trials of a 20 m sprint test (light gates at 5 m, 10 m and 20 m) and six trials of the 5-0-5 agility test. Twelve participants repeated the 5- 0-5 test several weeks later. A three-dimensional motion capture system (250 Hz) was used to track the centre of mass at 0.3 m, 0.5 m and 1.0 m either side of the turn and identify specific CoD phase times. Pearson's correlations showed strong, significant relationships between the 5-0-5 time and 5 m (r=0.89, P<0.001); 10 m (r=0.91, P<0.001) and 20 m sprint times (r=0.93, P<0.001). However, the strength of these relationships decreased (r<0.65, P>0.05) when CoD ability was measured over distances less than 0.5 m. Analysis of coefficient of variation (CV%) data indicated that the 5-0-5 test had high intra (CV% = 2.8) and inter-test reliability(CV% = 1.3), with these data decreasing for distances less than 1 m (CV% = 3.5-6.9). Specific movement phase times were the least reliable measures of CoD ability (CV% 4.7-53.6). Results suggest a bias between high speed linear running ability and 5-0-5 time. However, an effective compromise can be found between test reliability and the external validity by assessing CoD ability over 1 m. Findings indicate that the current practice of assessing CoD ability over large distances in questionable.
Details
- Title
- The influence of test distance on change of direction speed test results
- Authors
- Mark Sayers (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- Journal of strength and conditioning research, Vol.29(9), pp.2412-2416
- Publisher
- Lippincott Williams & Wilkins
- Date published
- 2015
- DOI
- 10.1519/JSC.0000000000001045
- ISSN
- 1064-8011
- Copyright note
- Copyright © 2015. National Strength and Conditioning Association. Reproduced in accordance with the publisher policy. This is a non-final version of an article published in final form in Sayers, Mark G.L. Influence of Test Distance on Change of Direction Speed Test Results, Journal of Strength and Conditioning Research: September 2015 - Volume 29 - Issue 9 - p 2412-2416 doi: 10.1519/JSC.000000000000104
- Organisation Unit
- School of Health - High Performance Sport; University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy; School of Health - Sports & Exercise Science; School of Health and Behavioural Sciences - Legacy
- Language
- English
- Record Identifier
- 99449309202621
- Output Type
- Journal article
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- Sport Sciences