The purpose of this study was to investigate the validity of estimated values of maximal oxygen uptake (VO₂max) . The collegiate women who were not currently involved regular physical activity participated in this study. Subjects performed a maximal graded continuous VO₂max test on cycle ergometer (measured VO₂max; M-VO₂max) . The expired gas was measured with gas analyzer. On the other day, the subjects also performed submaximal test on a cycle ergometer. The VO₂max was estimated with ML-1400 system (estimated VO₂max; E-VO₂max) .
The results showed that the mean E-VO₂max was about 10% significant lower than M-VO₂max and the E-VO2max and M-VO2max showed significant positive correlation (r=0.547) . These results suggest that ML-1400 system was suitable for estimat ing VO₂max for a large group of untrained subjects.