Table 2

Collated results of three consecutive exercise tests: test 2 was separated from test 1 by 15 minutes of rest, and test 3 was separated from test 2 by 90 minutes of rest

VariableTest 1Test 2Test 3
Values are mean (SEM). Note that 27 of 33 patients undergoing warm up had their collateral flow index measured.
*p < 0.05, test 2 v test 1 and test 3; †p < 0.005, test 2 v test 1 and test 3; ‡p < 0.05, test 3 v test 2;
§p < 0.05, test 3 v test 1.
CFI, collateral flow index; STD, ST depression.
Test duration (seconds)
Group with no collaterals (CFI=0, n=9)482 (46)498 (45)464 (50)
Group with collaterals (CFI=0 to 0.15, n=8)516 (53)538 (55)514 (52)‡
Group with collaterals (CFI=>0.15, n=8)488 (63)513 (59)489 (59)
All (n=33)469 (25)493 (25)†461 (26)
Time to 0.1 mV STD (seconds)
Group with no collaterals (CFI=0, n=9)333 (47)408 (53)*307 (53)
Group with collaterals (CFI=0 to 0.15, n=8)325 (65)431 (68)*367 (63)
Group with collaterals (CFI=>0.15, n=8)303 (46)393 (50)*345 (57)
All (n=33)266 (25)340 (27)†286 (27)
Heart rate at 0.1 mV STD (beats/min)
Group with no collaterals (CFI=0, n=9)119 (5)129 (6)*123 (6)
Group with collaterals (CFI=0 to 0.15, n=8)126 (4)137 (4)*132 (4)§
Group with collaterals (CFI=>0.15, n=8)115 (5)131 (6)*123 (7)
All (n=33)118 (2)129 (3)†123 (3)§
Rate–pressure product at 0.1mm STD (mm Hg/min)
Group with no collaterals (CFI=0, n=9)20 537 (907)22 589 (1008)†20 144 (1014)
Group with collaterals (CFI=0 to 0.15, n=8)20 681 (1380)§23 128 (1217)†21 437 (1302)
Group with collaterals (CFI=>0.15, n=8)18 233 (1027)22 364 (1820)†20 084 (1928)
All (n=33)19 586 (584)§22 068 (725)†20 057 (753)
aRecovery time to 0.5 mm STD
Group with no collaterals (CFI=0, n=9)307 (56)181 (42)*300 (50)
Group with collaterals (CFI=0 to 0.15, n=8)392 (65)244 (49)335 (56)
Group with collaterals (CFI=>0.15, n=8)323 (66)246 (42)330 (61)‡
All (n=33)321 (29)§227 (22)*287 (27)
Ectopic rate at peak exercise (beats/min)
Group with no collaterals (CFI=0, n=9)17 (7)5 (2)13 (6)
Group with collaterals (CFI=0 to 0.15, n=8)11 (4)4 (2)7 (2)
Group with collaterals (CFI=>0.15, n=8)12 (6)1 (0)6 (4)
All (n=33)12 (3)§3 (1)*8 (2)