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DOI: 10.1055/s-2007-964900
© Georg Thieme Verlag KG Stuttgart · New York
Mechanical Efficiency and Wheelchair Performance during and after Spinal Cord Injury Rehabilitation
Publikationsverlauf
accepted after revision August 22, 2006
Publikationsdatum:
13. April 2007 (online)
![](https://www.thieme-connect.de/media/sportsmed/200710/lookinside/thumbnails/10.1055-s-2007-964900-1.jpg)
Abstract
The purpose of the present study was to investigate whether mechanical efficiency (ME) relates to wheelchair propulsion capacity and wheelchair performance tasks during and after rehabilitation of people with a spinal cord injury (SCI). Eighty participants with a SCI were tested during rehabilitation (3 ×) and 1 year after discharge. Two 3-minute submaximal exercise blocks, a maximal wheelchair exercise test, and four wheelchair performance tasks were performed. ME, peak power output (POpeak), the sum of the performance times of a 15-m sprint and figure-of-eight, and the heart rate reserve (%HRR) during 10 s of wheelchair propulsion on a 3 % and 6 % slope were calculated. The relationship between ME and POpeak, %HRR and performance time was tested with a multilevel regression analysis. ME showed a significant relationship with POpeak (p ≤ 0.002). A 1 % higher ME related to a 1.6 - 2.2 W higher POpeak. ME of exercise block 2 was related to the sum of the performance times of a 15-m sprint and figure-of-eight; the tests were performed faster by participants with a higher ME. No relationship was found between ME and %HRR during wheelchair propulsion on a slope. ME showed a significant effect on wheelchair propulsion capacity and wheelchair performance time during and 1 yr after SCI rehabilitation although the isolated effect of ME is small.
Key words
peak power output - physical strain - performance time - spinal cord injury
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PhD Sonja de Groot
DNO
Rehabilitation Center Amsterdam
Institute for Clinical and Fundamental Human Movement Sciences, Faculty of Human Movement Sciences
Vrije Universiteit
Overtoom 283
1054 HW Amsterdam
Netherlands
Van der Boechorststraat 9
1081 BT Amsterdam
Netherlands
Telefon: + 31 2 06 07 17 49
eMail: s.de.groot@fbw.vu.nl