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Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Online ISSN 1827-1812
Leone M. 2, Garzon M. 1, Dionne A. 3, Bui H. T. 4, Comtois A. S. 1
1 Kinanthropology Department, University of Quebec in Montreal (UQAM), Montreal, QC, Canada;
2 Kinesiology and Health Sciences Department, University of Quebec in Chicoutimi (UQAC), Saguenay, QC, Canada;
3 Kinesiology Division, Department of Preventive and Social Medicine, Laval University, Laval, Quebec, QC, Canada;
4 Engineering Division, Applied Sciences Department, University in Quebec in Chicoutimi, QC, Canada
AIM: Aim of the study was to determine the workload yielded by the pedaling system of an immersible ergocycle (IE) during different pedaling rates (rpm) based on energetic costs.
METHODS: Healthy informed volunteers (n = 36) performed incremental exercise tests to maximum while pedaling on an IE with only the pedaling system being immersed or on a dryland ergocycle (DE). The regression equation of V.O2 as a function of load (W) obtained during DE for every subject was used to calculate the estimated load using the V.O2 measured during IE.
RESULTS: The following equations were obtained to calculate load and V.O2 on IE, respectively: Load (W) = 57.5 – 2.877 x rpm + 0.0523 x rpm2 (r = 0.972, SEE = 20.28 W) and V.O2 (L min-1) = 1.51 – 0.0514 x rpm + 0.0008 x rpm2 (r = 0.974, SEE = 0.26 L*min-1).
CONCLUSION: This study provides a means of calculating power output at various pedaling rates with an IE only having the pedaling system being immersed. This is a necessary step in order to eventually estimate and compare the cardiorespiratory response as a function of different immersion levels vs the load (W) on land.