Table 4.

Calculations to extract new T _v(T _v N) according to measured (Ms) and predicted (Pr) PFTs.

Males	Predicted (mL)	% FVCms	% FVCpr	δ (%)	T v N (mL)	T v N (mL/Kg)
Athletes, n = 156
T v	454.4 ± 3.97	7.9 ± 0.86*	8.6 ± 0.03*	0.7 ± 0.08	502.7 ± 6.9	6.6 ± 0.07
Nonathletes, n = 113
T v	438.3 ± 3.4	9.5 ± 0.12*	9.1 ± 0.06*	−0.3 ± 0.01	426.0 ± 5.5	5.8 ± 0.07
Females	Predicted (mL)	% FVCm	% FVCpr	δ (%)	T v N (mL)	T v N (mL/Kg)
Athletes, n = 95
T v	375.4 ± 4.6	8.7 ± 0.12*	9.4 ± 0.05*	0.6 ± 0.01	408.9 ± 7.1	6.5 ± 0.08
Nonathletes, n = 122
T v	319.3 ± 3.6	9.9 ± 0.15*	10.3 ± 0.09*	0.3 ± 0.01	333.1 ± 4.9	6.3 ± 0.07

FVC: forced vital capacity, Ms: measured, and Pr: predicted. *P < 0.0001, **P < 0.001.