Power responses of a rowing ergometer: mechanical sensors vs. Concept2 measurement system

International Journal of Sports Medicine
S BoyasArnaud Guével

Abstract

The aim of this study was to compare the power provided by a recent ergometer with the power developed by the rower determined using mechanical sensors set on the same apparatus. Six rowers and six non-rowers performed a power graded test and an all-out start on an instrumented ergometer (Concept2 system, model D, Morrisville, VT, USA). Power values displayed by the ergometer were recorded with a specific software. A strain gauge placed near the handle and a position sensor installed on the chain allowed the calculation of the power developed by the rower. Power values provided by the ergometer were strongly correlated to those determined with a direct measurement and calculation of power. However, power values given by the Concept2 system were lower (- 17.4 to - 72.4 W) than those calculated using mechanical sensors. This difference in power measurements was lower at a steady pace and for rowers. The Concept2 system underestimates the power produced by the rower by approximately 25 W. This difference in power seems to be independent of the level of power developed but increases with variations in intensity and pace. The deletion of the first strokes following changes in power production allows to limit this phenomenon. Accordi...Continue Reading

Citations

Dec 7, 2010·European Journal of Applied Physiology·Herve PournotChristophe Hausswirth
Apr 1, 2011·European Journal of Applied Physiology·Nicolas A TurpinFrançois Hug
Aug 23, 2011·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Nicolas A TurpinFrançois Hug
Oct 17, 2017·International Journal of Sports Physiology and Performance·Gunnar TreffJürgen M Steinacker
Mar 13, 2019·International Journal of Sports Physiology and Performance·Chelsie E WinchcombePeter Peeling
Jan 28, 2009·International Journal of Sports Physiology and Performance·Andrew J VoglerRobert T Withers
Jun 25, 2019·European Journal of Sport Science·Steffen HeldLars Donath
Apr 6, 2021·International Journal of Sports Physiology and Performance·Timo B van den BogaardMathijs J Hofmijster
Sep 9, 2011·The Journal of Experimental Biology·Nicolas A TurpinFrançois Hug

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