Table 6.

Arterial stiffness parameters

	Placebo		Nitrite 80 mg/day		Nitrite 160 mg/day
	Baseline	Week 10	Baseline	Week 10	Baseline	Week 10
Carotid systolic pressure, mmHg	122 ± 6	125 ± 4	121 ± 7	124 ± 8	125 ± 4	127 ± 7
Carotid pulse pressure, mmHg	56 ± 5	59 ± 4	57 ± 7	60 ± 8	60 ± 5	63 ± 6
Carotid artery diameter at end-diastole, mm†	6.55 ± 0.16	6.59 ± 0.13	6.66 ± 0.32	6.44 ± 0.33*	6.58 ± 0.12	6.54 ± 0.12
Carotid change in diameter, mm†	0.34 ± 0.03	0.34 ± 0.02	0.37 ± 0.04	0.46 ± 0.06*	0.40 ± 0.03	0.39 ± 0.0.03
Carotid augmentation index, %	25 ± 3	19 ± 5	20 ± 3	18 ± 5	19 ± 2	17 ± 2
Radial augmentation index, %	−10 ± 6	−10 ± 5	−11 ± 5	−11 ± 4	−13 ± 5	−17 ± 3
Carotid to femoral PWV, cm/s‡	782 ± 35	774 ± 36	780 ± 55	845 ± 75	946 ± 62	942 ± 77
Carotid to radial PWV, cm/s	1062 ± 35	1040 ± 30	967 ± 27	1002 ± 39	1014 ± 25	1014 ± 34

Values are means ± SE.

^*P < 0.05 vs. group base; †P < 0.05 for time × treatment; ‡placebo (n = 9). PWV, pulse wave velocity.