Table 2 Reference Equations Used for interpretation by XINT.

FEV1 Male: (0.132 × height (cm)) - (0.027 × age (yrs)) - 4.20

   Female: (0.069 × height (cm)) - (0.021 × age (yrs)) - 0.794

FVC Male: (0.165 × height (cm)) - 0.029 × age (yrs)) - 5.45

   Female: (0.094 × height (cm) - 0.022 × age) - 1.774

Estimating Vo2 From External Power Output:

Treadmill (walking) [5]:

VO2max (ml/kg/min) = maximum speed (Mph)* (262.5 + 17.5* elevation)/60

Cycle ergometer:

VO2 max (ml/min) = maximum Watts *11 + 300

Estimated Heart Rate-Vo2 Slope (Hr/Vo2) If Not Entered [6]:

Male: (maxHR - 63)/maxVo2M1/1000

Female: (maxHR - 73)/maxvo2M1/1000

Maximum Ventilation:

MVV if entered, else FEV1 × 35

Maximum Heart Rate:

202 - (0.72 × Age (yr))

Maximum Predicted Oxygen Uptake (Ml/Kg/Min) [7]:

Male: 43.2 - (0.255 × age)

Female: 42.3 - (0.33 × age)