Abstract
The purpose of this study is to investigate the effects of type and workload of exercise, ambient temperature and season on the prediction equation of maximal oxygen intake(VO2max). Sixteen adult males were used as the subjects. The subjects were given submaximalworks by a bicycle ergometer exercise and a step exercise under the four kinds of environ-ment(warm in summer, cool in summer, warm in winter, cool in winter). Prediction equationsexamined in this study were those of Astrand and Rykming (1954), Margaria et al.(1965) andSato et at.(1976-b, 1980).As for the type and workload of exercise and ambient temperature, the accuracy of predictedVO2max from the prediction equations of Astrand and Ryhming, Margaria et al.and Sato etal.(1976-b) was not sufficient compared with that from the prediction equation from Sato et al.(1980).In the prediction equation of Sato et al.(1980).however, seasonal difference in predictedVO2max was fomd.
