Trunk strength impact of track wheelchair start: Implications for classification

Vanlandewijck, Yves, C., Verellen, Joeri, Beckman, Emma, Connick, Mark and Tweedy, Sean M. (2011) Trunk strength impact of track wheelchair start: Implications for classification. Medicine and Science in Sports and Exercise, 43 12: 2344-2351. doi:10.1249/MSS.0b013e318223af14


Author Vanlandewijck, Yves, C.
Verellen, Joeri
Beckman, Emma
Connick, Mark
Tweedy, Sean M.
Title Trunk strength impact of track wheelchair start: Implications for classification
Journal name Medicine and Science in Sports and Exercise   Check publisher's open access policy
ISSN 0195-9131
1530-0315
Publication date 2011-12
Sub-type Article (original research)
DOI 10.1249/MSS.0b013e318223af14
Volume 43
Issue 12
Start page 2344
End page 2351
Total pages 7
Place of publication Philadelphia, PA, United States
Publisher Lippincott Williams & Wilkins
Collection year 2012
Language eng
Formatted abstract
PURPOSE:
The T54 wheelchair racing class comprises athletes with normal arm muscle strength and trunk strength ranging from partial to normal. Paralympic sports classes should comprise athletes who have impairments that cause a comparable degree of activity limitation. Based on this criterion the purpose of this study was to determine whether the T54 class is valid by assessing the strength of association between trunk strength and wheelchair acceleration.
METHODS:
Participants were ten male and three female international wheelchair track athletes with normal arm strength. Six were clinically assessed as having normal trunk strength and seven had impaired trunk strength. Measures included isometric arm and trunk strength and distance covered at one, two and three seconds in an explosive start from standstill on a regulation track, as well as on a custom-built ergometer with four times normal rolling resistance.
RESULTS:
No significant differences were observed between male athlete with and without full trunk function in distance covered after one, two, and three seconds. Correlations between isometric trunk strength and wheelchair track acceleration were non-significant and low (0.27-0.32), accounting for only 7 to 10% of variance in performance. Correlations between trunk strength and distance pushed under high resistance were also non-significant, although values were almost double (r = 0.41 - 0.54), accounting for 18 to 28% of the variance in performance.
CONCLUSIONS:
These results provide evidence that impairment of trunk strength has minimal impact on wheelchair acceleration and indicates the T54 class is valid. Results do not infer that athletes with no trunk strength should compete with those who have partial or full trunk strength.
Keyword Athletics
Activity limitation
Impairment
Paralympic
Racing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Human Movement and Nutrition Sciences Publications
 
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Created: Thu, 13 Oct 2011, 14:34:27 EST by Emma Beckman on behalf of School of Human Movement and Nutrition Sciences