Influence of body position when considering the ecological validity of laboratory time-trial cycling performance

Jobson, Simon A. and Nevill, Alan M. and George, S.R. and Jeukendrup, A.E. and Passfield, Louis (2008) Influence of body position when considering the ecological validity of laboratory time-trial cycling performance. Journal of Sports Sciences, 26 (12). pp. 1269-1278. ISSN 0264-0414. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1080/02640410802183585

Abstract

The aims of this study were to compare the physiological demands of laboratory- and road-based time-trial cycling and to examine the importance of body position during laboratory cycling. Nine male competitive but non-elite cyclists completed two 40.23-km time-trials on an air-braked ergometer (Kingcycle) in the laboratory and one 40.23-km time-trial (RD) on a local road course. One laboratory time-trial was conducted in an aerodynamic position (AP), while the second was conducted in an upright position (UP). Mean performance speed was significantly higher during laboratory trials (UP and AP) compared with the RD trial (P < 0.001). Although there was no difference in power output between the RD and UP trials (P > 0.05), power output was significantly lower during the AP trial than during both the RD (P = 0.013) and UP trials (P = 0.003). Similar correlations were found between AP power output and RD power output (r = 0.85, P = 0.003) and between UP power output and RD power output (r = 0.87, P = 0.003). Despite a significantly lower power output in the laboratory AP condition, these results suggest that body position does not affect the ecological validity of laboratory-based time-trial cycling.

Item Type: Article
Uncontrolled keywords: Road cycling; aerodynamic body position; upright body position; Kingcycle; power output
Subjects: H Social Sciences
Divisions: Faculties > Social Sciences > School of Sport and Exercise Studies
Depositing User: Jane Griffiths
Date Deposited: 22 Apr 2009 13:15
Last Modified: 03 Jun 2014 11:32
Resource URI: http://kar.kent.ac.uk/id/eprint/15725 (The current URI for this page, for reference purposes)
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