Conditions:
• The equation is valid for power outputs of 300-1200 kg•m/min.
• The pedal rate must be known.
oxygen uptake in mL per minute =
= (resting oxygen uptake) + (vertical oxygen uptake)
resting oxygen uptake in mL/min =
= 3.5 * (body weight in kilograms)
vertical oxygen uptake =
= 2.0 * (power output in kg•m/min) =
= 2.0 * (kg resistance) * (meters per pedal revolution) * (pedal rate in revolutions per minute)
where:
• 2.0 is the regression constant for converting kg•m/min to mL/min.
• There is no horizontal component to activity.
• kilograms resistance indicates the resistance setting for the ergometer.
• The meters per pedal revolution varies with the ergometer used (3 m/rev for Tunturi and BodyGuard ergometers; 6 m/rev for Monark ergometers).
• The pedal rate ranges from 50 rpm for untrained cyclists to over 80 rpm for trained cyclists.
resting oxygen uptake in L/min =
= (resting oxygen uptake in mL/min) / 1000
resting oxygen uptake in mL per kg per min =
= (resting oxygen uptake in mL/min) / (body weight in kilograms)
