A physiological and biomechanical comparison of over-ground, treadmill and ergometer wheelchair propulsion
Deutscher übersetzter Titel: | Ein physiologischer und biomechanischer Vergleich der Rollstuhl-Antriebskräfte auf normalem Untergrund, auf dem Laufband und auf dem Ergometer |
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Autor: | Mason, Barry S.; Lenton, John ; Leicht, Christof; Goosey-Tolfrey, Victoria |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 32 (2014), 1, S. 78-91, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2013.807350 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201407006402 |
Quelle: | BISp |
Abstract
The purpose of the study was to determine which laboratory-based modality provides the most valid physiological and biomechanical representation of over-ground sports wheelchair propulsion. Fifteen able-bodied participants with previous experience of wheelchair propulsion performed a 3-minute exercise trial at three speeds (4, 6 and 8 km ∙ h–1) in three testing modalities over separate sessions: (i) over-ground propulsion on a wooden sprung surface; (ii) wheelchair ergometer propulsion; (iii) treadmill propulsion at four different gradients (0%, 0.7%, 1.0% and 1,3%). A 0.7% treadmill gradient was shown to best reflect the oxygen uptake (7.3 to 9.1% coefficient of variation (CV)) and heart rate responses (4.9 to 6.4% CV) of over-ground propulsion at 4 and 6 km ∙ h–1. A 1.0% treadmill gradient provided a more valid representation of oxygen uptake during over-ground propulsion at 8 km ∙ h–1 (8.6% CV). Physiological demand was significantly underestimated in the 0% gradient and overestimated in the 1.3% gradient and wheelchair ergometer trials compared to over-ground trials (P<0.05). No laboratory-based modality provided a valid representation of the forces applied during OG (≥ 18.4% CV). To conclude, a 0.7% treadmill gradient is recommended to replicate over-ground wheelchair propulsion at lower speeds (4 and 6 km ∙ h–1) whereas a 1.0% gradient may be more suitable at 8 km ∙ h–1. Verf.-Referat