Table 5—

Regression parameters for peak maximal inspiratory mouth pressure (P_I,peak) and plateau maximal inspiratory mouth pressure sustained for 1.0 s (P_I,max,1.0) in the final model

	Males		Females
	RV	FRC	RV	FRC
Subjects n	229		304
P _I,peak
Age yrs	−0.05^#	−0.04*	−0.09***	−0.08***
Weight kg	0.05*	0.05*	0.04*	0.05^#
BMI kg·m⁻²	0.27**	0.20**	0.11*	0.14***
P _I,max,1.0
Age yrs	−0.04*	−0.04**	−0.08***	−0.07***
Weight kg	0.06**	0.05*	0.04**	0.04^#
BMI kg·m⁻²	0.24^#	0.18*	0.11*	0.13***

RV: residual volume
FRC: functional residual capacity
BMI: body mass index
*: p<0.05
**: p<0.01
^#: p<0.005
***: p<0.001