Table 3.

Relationship between exercise capacity and health related quality of life with body composition and lung function

Variables	6MWD(m)	SF-36 (physical summary)	SF-36 (mental summary)
Age (years)	0.07**	NS	NS
FFMI (kg/m²)	NS	NS	NS
Body cell mass (kg)	0.13*	NS	NS
Phase angle (°)	0.29*	0.06**	NS
FVC (%predicted)	0.24*	0.21*	NS
FEV1 (%predicted)	0.17*	0.20*	NS
TLC (%predicted)	0.16*	0.21*	NS
DLCO (%predicted)	0.36*	0.26*	NS

Single regression analysis. R² values are shown.

*p<0.01.

**p<0.05.

DLCO, diffusion capacity for carbon monoxide; FEV1, forced expiratory volume in the first second; FFMI, fat-free mass index; FVC, forced vital capacity; 6MWD, 6 min walk distance; NS, not significant; SF-36, Short-Form 36-item Questionnaire; TLC, total lung capacity.