Title | Reliability of the virtual elevation method to evaluate rolling resistance of different mountain bike cross-country tyres |
Author | Maier, Thomas; Müller, Beat; Schmid, Lucas; Steiner, Thomas; Wehrlin, Jon Peter |
EHSM Authors | Müller, Beat, Beat.Mueller@baspo.admin.ch, Schmid, Lucas, Lucas.Schmid@baspo.admin.ch, Steiner, Thomas, thomas.steiner@baspo.admin.ch, Wehrlin, Jon, jon.wehrlin@baspo.admin.ch |
Year | 2018 |
Herausgeber | Routledge |
Journal | Journal of Sports Sciences |
Datei | |
Abstract | Although a low rolling resistance is advantageous in mountain bike cross-country racing, no studies have used the virtual elevation method to compare tyres from different manufacturers as used in international competitions so far. The aims of this study were to assess the reliability of this method, to compare the off-road rolling resistance between tyres and to calculate the influence on off-road speed. Nine 29-in. mountain bike cross-country tyres were tested on a course representing typical ground surface conditions 5 or 6 times. The coefficient of rolling resistance was estimated with the virtual elevation method by 3 investigators and corresponding off-road speeds were calculated. The virtual elevation method was highly reliable (typical error = 0.0006, 2.8%; limits of agreement |