1. Metabolic Calculations
Submaximal Exercise

2. Cycle Ergometry Work = Force x Distance
F = tension
D = 6 m/rev x pedal cadence in rev/min
Work Rate = Force x Distance / time
D = 6 m/rev x cadence in rev/min
Time = 1 minute

3. Cycle Ergometer Formulas
Leg Cycling
VO2 = 1.8 (work rate) / M + 7
Work rate in kg . m / min
M = mass in kg
VO2 = ( W / M ) + 7
Work rate in Watts

4. Treadmill Walking & Running
Oxygen cost
moving forward
moving vertically upward
Moving belt reduces oxygen cost compared to walking on normal ground
Similar work means walking at ~1% grade

5. Calculating VO2 Speed 1 mph = 26.8 meters/min
Fractional grade = (% grade / 100)
Units are in ml/kg/min
Walking vs. Running and metabolic calculations
Running - faster movement and greater vertical displacement = increased oxygen cost
Walking = speeds up to 3.7 mph if truly walking
Running = speeds from 3.0 mph if truly running

6. Calculating VO2 Walking: Running:
VO2 = 0.1 (speed) (speed) (fractional grade) + 3.5
Running:
VO2 = 0.2 (speed) (speed) (fractional grade) + 3.5

7. Calculating VO2
Two variables to deal with for predictions: speed and grade
Can prescribe speed, grade, or both to elicit work intensity (VO2) .

8. End