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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE

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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2012 April;171(2):165-72

language: English

Estimation of maximal oxygen uptake from ratings of perceived exertion elicited during sub-maximal tests in competitive cyclists

Coquart J. B. J. 1, Eston R. 2, Nycz M. 3, Grosbois J.-M. 4, Garcin M. 5, 6

1 CETAPS, Faculty of Sport Sciences, University of Rouen, Mont Saint Aignan, France;
2 School of Health Sciences, University of South Australia, Adelaide, Australia;
3 Quality Cell, German and Gauthier Hospital, Béthune, France;
4 Department of Pneumology, Germon and Gauthier Hospital, Béthune, France;
5 Univ Lille Nord de France, Lille, France;
6 UDSL, Ronchin, France


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Aim. The purpose of this study was to test the validity and the accuracy of estimating maximal oxygen uptake (VO2max) from ratings of perceived exertion (RPE), during sub-maximal tests in competitive cyclists.
Methods. Twelve competitive cyclists performed a graded exercise test (GXT) and a test with randomised workloads (TRW) on a cycle ergometer. Oxygen uptake (VO2) and RPE were measured at 150, 200, 250 and 300 Watts (W) during both tests, and actual VO2max was also determined at the end of the GXT. Individual linear regressions between VO2 and RPE were extrapolated to RPE 19 in order to estimate VO2max from each test. Actual and estimated VO2max from GXT and TRW were not significantly different (65.0±6.9, 68.3±8.8 and 73.1±12.0 ml.kg-1.min-1, respectively; P>0.05).
Results. The estimated VO2max were significantly correlated to actual VO2max whatever the test (P≤0.05; r≥0.57). The bias and the 95% limits of agreement analysis represented -3.3±14.5 and -8.1±17.7 ml.kg-1.min-1 for GXT and TRW, respectively.
Conclusion. The results suggested that only RPE elicited during a sub-maximal GXT may be used to estimate VO2max in competitive cyclists.

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