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Erschienen in:
01.01.2010 | Original Article
Exponential protocols for cardiopulmonary exercise testing on treadmill and cycle ergometer
Erschienen in: European Journal of Applied Physiology | Ausgabe 1/2010
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An extended exponential exercise protocol was validated by comparing submaximal and maximal parameters with those obtained by linear protocol. Normal subjects (n = 16, 20–69 years) undertook maximal exercise tests on treadmill and cycle ergometer. The subjects had a wide range of exercise capacity, and all were accommodated by the protocol. Mean oxygen uptake \( (\dot{V}_{{{\text{O}}_{ 2} }} ) \) agreed between protocols at gas exchange anaerobic threshold (θ) (95% CI of difference −0.1 to +0.06 l min−1) and at peak (95% CI of difference −0.1 to +0.1 l min−1). Mean \( {\hbox{pre-}}\theta \Updelta \dot{V}_{{{\text{O}}_{2} }} /\Updelta {\text{work rate}}(\dot{W}) \) slope on the cycle ergometer agreed between protocols (95% CI of the difference −0.9 to +0.25 ml min−1 W−1). \( {\hbox{Post-}}\theta \Updelta \dot{V}_{{{\text{O}}_{2} }} /\Updelta \dot{W} \) slope was steeper than pre-θ, and steeper by linear than by exponential protocol (P = 0.0001). It is concluded that the exponential protocol is valid for the measurement of submaximal and maximal exercise parameters in subjects with a wide range of exercise capacity.