Table 2. MLD and Measurement Error of MLD for CA and MCA (n = 12 Segments for Each HR).

HR (bpm)	CA	MCA	P
MLD (mm)
Static	3.2 ± 1.0
50	3.2 ± 1.0	3.2 ± 1.0	0.87
60	3.2 ± 1.0	3.2 ± 1.0	0.104
70	3.1 ± 1.0	3.2 ± 0.9	0.429
80	3.2 ± 1.0	3.1 ± 1.0	0.755
90	3.1 ± 0.9	3.2 ± 1.0	0.107
100	3.1 ± 0.8	3.1 ± 0.8	0.627
110	2.7 ± 0.7	2.9 ± 0.8	0.012*
120	2.5 ± 1.0	3.0 ± 0.8	0.006*
Measurement error of MLD (%)
50	2.5 ± 2.6	4.5 ± 4.2	0.165
60	2.2 ± 2.6	2.1 ± 2.5	0.801
70	5.1 ± 7.1	2.9 ± 2.4	0.305
80	4.9 ± 8.4	4.7 ± 5.4	0.678
90	3.3 ± 4.2	2.2 ± 2.5	0.460
100	10.4 ± 7.8	9.4 ± 7.5	0.543
110	18.4 ± 9.4	11.7 ± 5.9	0.013*
120	25.0 ± 16.5	10.0 ± 7.3	0.013*

Results are presented as means ± standard deviations. ^*Statistically significant difference (p < 0.05). MLD = minimal luminal diameter