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Two regression equations for estimating cardiorespiratory fitness (CRF) with treadmill parameters.
| ACSM Equation; Most Widely Used Regression Equation |
|---|
| Running: VO2max = (0.2 × speed) + (0.9 × speed × fractional grade%) + 3.5 |
| Walking: VO2max = (0.1 × speed) + (1.8 × speed × fractional grade%) + 3.5 |
| FRIEND Equation; Newly Reported Regression Equation |
| VO2max = speed × (0.17 + fractional grade × 0.79) + 3.5 |
VO2max; (mL/kg/min).
