Characteristics and determinants of endurance cycle ergometry and six-minute walk distance in patients with COPD

BMC Pulmonary Medicine

Table 3 Stepwise linear regression model of endurance cycle time in seconds

r²: 15.1%
Variable	Coefficient	Standard error	t value	p value
Age, yrs	-3.35	0.57	-5.84	<0.001
Sex, m/f	-31.51	12.91	-2.44	0.015
FFMI, kg/m²	8.49	2.79	3.04	0.002
GOLD stage	-42.09	6.59	-6.39	<0.001
DLCO, %	1.21	0.32	3.83	<0.001
Dyspnea before test, index	-13.38	4.43	-3.02	0.003
Leg fatigue before test, index	-6.96	3.52	-1.98	0.048

Multiple linear regression model for parameters predictive of endurance cycle time
Using isolated linear regression determination a stepwise multiple linear regression model was established with an r² of 15.1%.

ISSN: 1471-2466