Respiratory Research

Table 3 Independent predictors of physical activity level (PAL)

From: Physical activity level and its clinical correlates in chronic obstructive pulmonary disease: a cross-sectional study

Variable	PAL
Variable	B	SE	95% CI	Sig.	*Βeta*
Age (years)	-0.002	0.003	-0.007, 0.003	0.489	-0.054
Gender (female = 1)	0.089	0.048	-0.004, 0.183	0.062	0.221
FEV₁ (percent predicted)	0.004	0.001	0.001, 0.006	0.002	0.305
Walking speed (m/s)	0.232	0.087	0.062, 0.402	0.008	0.282
Quadriceps strength (kg)	0.004	0.002	0.000, 0.008	0.041	0.242
FFMI (kg/m²)	0.021	0.011	0.000, 0.042	0.047	0.240
Log of CRP	-0.032	0.017	-0.066, 0.002	0.065	-0.174

Note: N = 72. FEV₁ = Forced expiratory volume in one second in percent of predicted, FFMI = fat-free mass index, CRP = C-reactive protein, CI = confidence interval, FEV₁ = forced expiratory volume in one second.

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ISSN: 1465-993X

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