Physiological responses in cycling during 30 min at subjective critical power - Perrey, S.; Girard, A.; Bertucci, W.; Grappe, F.; Rouillon, J. D. (Book of abstracts of the 6th annual congress of the European College of Sport Science, 15th congress of the German Society of Sport Science. Cologne, 24-28 July 2001, 2001)