. Author manuscript; available in PMC: 2010 Sep 1.

Published in final edited form as: Int J Psychophysiol. 2009 Mar 10;73(3):212–217. doi: 10.1016/j.ijpsycho.2009.03.002

Table 3.

Linear regression results for HRV at rest at visit 2

HRV	Model	Variables	B	p-value	adjusted R²
RMSSD	1	Age + sex + ethnicity			0.030
		Age	−0.108	0.049
		Sex	−0.066	0.212
		Ethnicity	0.185	0.001
	2	Model 1 + visit 1 RMSSD at rest			0.339
		Visit 1 RMSSD at rest	0.571	< 0.001
	3	Model 1 + BMI at visit 1			0.030
		BMI at visit 1	−0.003	0.309
	4	Model 1 + BMI change			0.043
		BMI change^*	−0.027	0.032
	5	Model 1 + WC at visit 1			0.031
		WC at visit 1	−0.005	0.246
	6	Model 1 + WC change			0.042
		WC change^†	−0.025	0.017
	7	Model 1 + Father's education level			0.032
		Father's education level	0.017	0.150

HF	1	Age + sex + ethnicity			0.029
		Age	−0.110	0.037
		Sex	−0.091	0.387
		Ethnicity	0.173	0.001
	2	Model 1 + visit 1 HF at rest			0.251
		Visit 1 HF at rest	0.481	< 0.001
	3	Model 1 + BMI at visit 1			0.033
		BMI at visit 1	−0.011	0.107
	4	Model 1 + BMI change			0.041
		BMI change^*	−0.051	0.042
	5	Model 1 + WC at visit 1			0.033
		WC at visit 1	−0.013	0.097
	6	Model 1 + WC change			0.040
		WC change^†	−0.049	0.021
	7	Model 1 + Father's education level			0.024
		Father's education level	0.030	0.182

BMI change= BMI at visit 2 – BMI at visit 1;

^†

WC change= WC at visit 2 – WC at visit 1

BMI= body mass index; HF= high frequency power; HRV= heart rate variability; RMSSD= root mean square of successive differences of normal RR intervals; WC= waist circumference.