A new method to measure rolling resistance in treadmill cycling.

Détails

ID Serval
serval:BIB_8EFA4DB39150
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A new method to measure rolling resistance in treadmill cycling.
Périodique
Journal of Sports Sciences
Auteur(s)
Henchoz Y., Crivelli G., Borrani F., Millet G.P.
ISSN
1466-447X (Electronic)
ISSN-L
0264-0414
Statut éditorial
Publié
Date de publication
2010
Volume
28
Numéro
10
Pages
1043-1046
Langue
anglais
Résumé
The purpose of this study was to evaluate a new method of measuring rolling resistance in treadmill cycling and to establish its sensitivity and reproducibility. One participant was asked to keep a bicycle in equilibrium on a treadmill without pedalling at a constant speed of 5.56 m x s(-1), which was held in place in the front by a dynamometer. For each condition, the method consisted of 11 measurements of the force required to hold the cycle at different treadmill slopes (0-10%, increment 1%). The coefficient of rolling resistance was calculated based on the forces applied to the bicycle in equilibrium. To test the sensitivity of the method, the bicycle was successively equipped with three tyre types (700 x 28, 700 x 23, 700 x 22) and inflation pressure was set at 150, 300, 600, 900, and 1100 kPa. To test the reproducibility of the method, a second experimenter repeated all measurements done with the 700 x 23 tyres. The method was sensitive enough to detect an effect of both tyre type and inflation pressure (P < 0.001: two-way ANOVA). The measurement of the coefficient of rolling resistance by two separate experimenters resulted in a small bias of 0.00029 (95% CI, -0.00011 to 0.00068). In conclusion, the new method is sensitive and reliable, as well as being simple and affordable.
Mots-clé
Adult, Exercise Test, Humans, Male, Reproducibility of Results
Pubmed
Web of science
Création de la notice
25/08/2010 16:48
Dernière modification de la notice
03/03/2018 19:20
Données d'usage