Validity of the Prediction Equation of the Maximal Oxygen Consumption in Submaximal Exercise Test

Objective: To explore accuracy and validity of a VO(2)max prediction equation of the multistage model using by modified Bruce protocol submaximal exercise test in healthy subjects. Method: Thirty three healthy subjects (age: 44.0 +/- 12.9) were recruited. VO(2)max was measured during treadmill by direct gas analysis from a maximal incremental test. VO(2)max was then predicted from multistage model equation with age, measured oxygen consumption and heart rate during a maximal incremental treadmill test. And the predicted VO(2)max values from equation were compared with the measured VO(2)max values. Results: The predicted VO(2)max values and the measured VO(2)max values were highly correlated (r=0.9, p < 0.001). The predicted VO(2)max values (2,285.3 +/- 536.0 ml/min) were not significantly different from the measured VO(2)max values (2,285.5 +/- 598.5 ml/min). Conclusion: In healthy subjects, the multistage model equation offers a fairly accurate VO(2)max prediction. Therefore the equation can be used in the estimation of VO(2)max at modified Bruce protocol in an aerobic exercise program.