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PubMed · 1150571

A sinusoidal load generator for use in cycle ergometry.

P F Torres·B J Whipp·S N Steen·K Wasserman
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Abstract

We have modified an electromagnetically braked cycle ergometer to provide a sinusoidally varying work load. This was accomplished by applying a low-frequency sinusoidal voltage at the inputs of the electromagnets using a sinusoidal potentiometer, whose shaft was driven by a variable-speed motor, and a voltage-programmable power supply to amplify the signal. The frequency range is currently 0.0017-0.3 Hz. This technique for sinusoidal work loads allow the period, amplitude, and mean position to be easily changed from a console, even during a test if required.

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ElectronicsHumansOxygen ConsumptionPhysical ExertionPhysiologyPotentiometryJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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P F Torres, B J Whipp, S N Steen, K Wasserman. 1975. A sinusoidal load generator for use in cycle ergometry.. https://doi.org/10.1152/jappl.1975.38.3.554

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