Influence of blood flow velocity on arterial distensibility of carotid artery in healthy men

Table 2 Determinants of measures of carotid arterial distensibility

Independent variables	Univariate model		Multivariate model
Independent variables	r value	p value	β value	Accumulative R ²	Incremental R ²	p value
Dependent variable: distensibility coefficient
Age	−0.722	<0.0001	−0.570	0.521	0.521	<0.0001
Heart rate	−0.375	<0.01	−0.174	0.579	0.058	<0.05
Carotid diastolic diameter	−0.208	<0.10	−0.202	0.627	0.048	<0.01
PP	−0.188	NS	−0.016	0.655	0.028	<0.05
Normalized pulsatile BFV	0.591	<0.0001	0.237	0.673	0.019	<0.05
BMI	−0.249	<0.05				NS
Estimated VO_2max	0.559	<0.0001				NS
MAP	−0.371	<0.01				NS
IMT	−0.193	NS				NS
Peak BFV	0.305	<0.01				NS
Minimum BFV	−0.126	NS				NS
Mean BFV	−0.029	NS				NS
Pulsatile BFV	0.406	<0.0001				NS
Normalized peak BFV	0.572	<0.0001				NS
Dependent variable: β-stiffness index
Age	0.661	<0.0001	0.654	0.437	0.437	<0.001
Carotid diastolic diameter	0.224	<0.10	0.228	0.499	0.062	<0.001
Heart rate	0.348	<0.01	0.265	0.543	0.043	<0.01
Estimated VO_2max	−0.428	<0.0001	0.244	0.560	0.017	<0.05
Normalized pulsatile BFV	−0.530	<0.0001	−0.223	0.570	0.010	<0.05
MAP	0.133	NS	−0.202	0.590	0.020	<0.05
PP	0.106	NS				NS
IMT	0.111	NS				NS
Peak BFV	−0.281	<0.05				NS
Minimum BFV	0.118	NS				NS
Mean BFV	0.014	NS				NS
Pulsatile BFV	−0.374	<0.01				NS
Normalized peak BFV	−0.511	<0.0001				NS

BFV carotid arterial blood flow velocity, BMI body mass index, IMT intima-media thickness, MAP mean arterial pressure, PP carotid pulse pressure, VO _2max maximal oxygen consumption

ISSN: 1880-6562