Table 1.

Results of body plethysmography.

	Co	SM	p-value	n2p
FEV1 (l)	4.66 ± 0.61	4.18 ± 0.69	< 0.01*	0.84
PEF (l s−1)	9.50 ± 1.19	8.07 ± 1.25	< 0.01*	0.71
RAW (kPa l−1)	0.32 ± 0.08	0.58 ± 0.16	< 0.01*	0.79
VC (l)	6.00 ± 0.72	5.65 ± 0.65	< 0.01*	0.82

The values are given as means and standard deviations.

Co control; SM surgical mask; FEV₁ forced expiratory volume in 1 s; PEF peak expiratory flow; RAW airway resistance; VC vital capacity; n²_p partial eta-squared.

*Significant differences from the control.