Table 4. Stepwise multiple linear regression analysis, by sex, for factors associated with the 6MWD.

	Females			Males
	Unstandardized coefficient	SE	p-value	Unstandardized coefficient	SE	p-value
Constant	233.994	83.74	0.006	141.327	78.778	0.074
Age	-1.815	0.204	<0.001	-1.039	0.226	<0.001
Height, cm	2.632	0.505	<0.001	3.083	0.438	<0.001
R2	0.345			0.285
Change in R2	0.34			0.281

Both height and the difference in heart rate before and after the walk test were significantly associated with the 6MWD.