Validity and reliability of the Axiom PowerTrain cycle ergometer when compared with an SRM powermeter
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| Deutscher übersetzter Titel: | Validität und Reliabilität des Axiom-PowerTrain-Fahrradergometers im Vergleich zu einem SRM-Ergometriesystem |
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| Autor: | Bertucci, W.; Duc, S.; Villerius, V.; Grappe, F. |
| Erschienen in: | International journal of sports medicine |
| Veröffentlicht: | 26 (2005), 1, S. 59-65, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Englisch |
| ISSN: | 0172-4622, 1439-3964 |
| DOI: | 10.1055/s-2004-817855 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU200504001012 |
| Quelle: | BISp |
Abstract des Autors
The purpose of this study was to determine the validity and the reliability of a stationary electromagnetically-braked cycle ergometer (Axiom PowerTrain) against the SRM power measuring crankset. Nineteen male competitive cyclists completed four tests on their bicycle equipped with a 20-strain gauges SRM crankset: a maximal aerobic power (MAP) test and three 10-min time trials (TTs) with three different simulated slopes (0, 3, and 6 %). The Axiom ergometer overestimated (p<0.05) the SRM power output during the last stage of the MAP test and during TTs, by 5 % and 12 %, respectively. Power output (PO) of the Axiom ergometer drifted significantly (p<0.05) with the time during TT. These findings indicate that the Axiom ergometer does not provide a valid measure of PO compared with SRM. However, the small coefficient of variation (2.2 %) during the MAP test indicates that the Axiom provides a reliable PO and that it can be used e.g. for relative PO comparisons with competitive cyclists during a race season. Verf.-Referat