If Sex = Male Then
Cycle_Factor = 50.72 – (0.372 * Age)
Ideal_body_wt_kg = (0.79 * Height_cm) – 60.7
If Weight_kg > Ideal_body_wt_kg Then
Pred_VO2max_Cycle=(Ideal_body_wt_kg*Cycle_Factor)+(6*(Weight_kg – Ideal_body_wt_kg))
Otherwise: Pred_VO2max_Cycle = ((Ideal_body_wt_kg + Weight_kg) / 2) * Cycle_Factor
If Sex = Female Then
Cycle_Factor = 22.78 – (0.17 * Age)
Ideal_body_wt_kg = (0.65 * Height_cm) – 42.8
If Weight_kg > Ideal_body_wt_kg Then
Pred_VO2max_Cycle=((Ideal_body_wt_kg+43)*Cycle_Factor)+(6*(Weight_kg-Ideal_body_wt_kg))
Otherwise: Pred_VO2max_Cycle = ((Ideal_body_wt_kg + Weight_kg + 86) / 2) * Cycle_Factor
Pred_VO2max_Cycle above is in milliliters: Divide by 1000 to covert to Liters
Pred_VO2max_Treadmill = 1.1 * PredVO2maxCycle
Other Useful Calculations
Predicted VO2max >= 85% predicted
Predicted_VEmax = (FEV1 * 40)
Anaerobic Threshold > 40% predicted VO2max
Ventilatory Reserve = (1-(VEmax/PredVEmax))*100 (normal >=25)
Predicted_Max_Heart_Rate = 210 – (0.65 * Age) (normal is >= 90% predicted)
Ventil Eff iciency = VEatAT / VCO2atAT (normal <34 at AT or <40 at max exercise)
Heart_Rate_Response = (HRmax-HRrest)/(VO2max-VO2rest) (normal < 50)
O2pulse = VO2max/Heat_Rate_max (ml/beat) (normal = predicted VO2max/predicted maximum HR)
Normal Respiratory Rate max < 60
Normal drop in O2 sat < 4%
P(A-a)O2 < 35
Male NHANES III Equations for Predicted FEV1
Caucasian PredFEV1 < 20 yrs = (0.00014098 * Height_cm2) + (0.00447 * Age2) – (0.04106 * Age) – 0.7453
Caucasian PredFEV1 >= 20 yrs = (0.00014098 * Height_cm2) – (0.000172 * Age2) – (0.01303 * Age) + 0.5536
African-American PredFEV1 < 20 = (0.00013194 * Height_cm2) + (0.004316 * Age2) – (0.05711 * Age) – 0.7048
African-American PredFEV1 >= 20 = (0.00013194 * Height_cm2) – (0.02309 * Age) + 0.3411
Hispanic PredFEV1 < 20 = (0.00015104 * Height_cm2) + (0.004291 * Age2) – (0.04248 * Age) – 0.8218
Hispanic PredFEV1 >= 20 = (0.00015104 * Height_cm2) – (0.02928 * Age) + 0.6306
Female NHANES III Equations for Predicted FEV1
Caucasian PredFEV1 < 18 yrs = (0.00011496 * Height_cm2) + (0.06537 * Age) – 0.871
Caucasian PredFEV1 >= 18 yrs = (0.00011496 * Height_cm2) – (0.000194 * Age2) – (0.00361 * Age) + 0.4333
African-American PredFEV1 < 18 yrs = (0.00010846 * Height_cm2) + (0.05799 * Age) – 0.963
African-American PredFEV1>=18 yrs = (0.00010846*Height_cm2)-(0.000097*Age2)-(0.01283*Age)+0.3433
Hispanic PredFEV1 < 18 yrs = (0.00012154 * Height_cm2) + (0.0649 * Age) – 0.9641
Hispanic PredFEV1 >= 18 yrs = (0.00012154 * Height_cm2) – (0.000113 * Age2) – (0.01178 * Age) + 0.4529