Table 4.

Longitudinal (6 months) unadjusted and adjusted linear regression models of change in biological markers as a function of change in physical activity among participants (n = 120).

Physical activity indices‡	CRP (mg/dL)	Insulin (uIU/mL)	HDL-cholesterol (mg/dL)	Glucose (mg/dL)	Triglycerides (mg/dL)	Waist circumference (cm)
	β-coef	β-coef	β-coef	β-coef	β-coef	β-coef
Total time index (hours·week−1)
Unadjusted	−.055	−.022*	.023	.168	−.062	−.026
Model 1	−.051	−.029	.033	.185	−.164	−.013
Model 2	−.057	−.057	.033	.296	−.103	−.007
Activity index (total units)
Unadjusted	−.045*	−.070	−.027	.099	.356	−.168†
Model 1	−.052*	−.070	−.017	.074	.373	−.167†
Model 2	−.051*	−.052	−.022	.137	.437	−.164*
Energy index (kcal·week−1 [100])
Unadjusted	−.002	−.005	−.005	.059	.092	−.023
Model 1	−.001	−.009	−.001	.082	.014	−.016
Model 2	−.002	−.021	.002	.145	.044	−.017

*P value < 0.05.

^† P value < 0.01.

^‡Measured with Yale physical activity survey.

CRP = C-reactive protein.

HDL = high density lipoprotein.

Notes. (1) Model 1 controlled for age and gender and (2) model 2 controlled for model 1 covariates, tobacco use, Charlson comorbidity index, and disability.