Abstract

The purpose of this investigation was to compare linear and curvilinear regression equations relating oxygen uptake and energy expenditure to running velocity and to examine the effects of age, sex, and maximal aerobic power on these relations in well-conditioned male and female runners. One-variable linear equations that use running velocity as the independent variable for predicting oxygen uptake and energy expenditure had coefficients of determination (r2) of 0.86 and 0.897, respectively. Two-variable linear equations that use body mass and velocity as independent variables had r2 values of 0.895 and0.901 for the same relation. Age, sex, and maximal aerobic power did not influence the relations between oxygen uptake, energy expenditure, and runningvelocity. Stepwise regression indicated that the two-variable linear equationshad the highest r2 values suggesting that between the running velocities of 8.8 and 16.9 kmh these equations best express the relation of oxygen uptake and energy expenditure to running velocity. Verf.-Referat