Table 3.

TDI Data and Coronary Vascular Tone

	Day 1		Day 2
	Baseline	Hyperoxia	Baseline	Vitamin C + Hyperoxia
Sm (cm/s)	8.50 ± 0.18	7.56 ± 0.26*	8.31 ± 0.21	t 8.51 ± 0.17†
Em (cm/s)	12.87 ± 0.71	12.33 ± 0.65	13.15 ± 0.42	13.52 ± 0.66
Am (cm/s)	5.96 ± 0.41	6.53 ± 0.72	6.99 ± 0.33	7.08 ± 0.41
E (cm/s)	81.38 ± 5.08	78.50 ± 4.57	80.38 ± 5.24	84.86 ± 5.92
A (cm/s)	40.63 ± 3.63	39.50 ± 2.07	39.00 ± 2.44	39.43 ± 3.2
E/Em	6.39 ± 0.36	6.43 ± 0.34	6.13 ± 0.37	6.38 ± 0.20
CBV (cm/s)	23.50 ± 2.31	17.00 ± 1.79*	23.88 ± 1.36	t 22.25 ± 1.45†
CVR	5.63 ± 0.88	7.32 ±0.94*	4.83 ± 0.32	t 5.29 ± 0.37†

Values are mean ± S.E.M. Sm, peak systolic velocity in ejection period measured at mitral annulus; Em, early diastolic velocity at mitral annulus; Am, late diastolic velocity at mitral annulus; CBV, peak velocity of coronary blood velocity; CVR, coronary vascular resistance.

^*P< 0.05, vs. respective baseline.

^†P < 0.05, vs. day 1 hyperoxia