Table 2

Exercise data (mean (SD))

Exercise 1 Exercise 2t testLinear regression
Group A (30 mins)
Total exercise time (s)388 (150)434 (161)p < 0.001y = −0.91x−6.2,r = 0.95, p < 0.0001
Time to angina (s)252 (168)294 (182) p < 0.05y = 0.86x+3.5,r = 0.92, p < 0.0001
Time to 1 mm ST (s)290 (167)360 (164) p < 0.05y = 0.89x−32,r = 0.77, p = 0.002
Maximum ST (mm)2 (1) 1.9 (1.3)NSy = 0.71x+0.64, r= 0.86, p = 0.0001
Workload (METS)7.6 (2)8.6 (2)p < 0.0001y = 0.89x−0.068, r = 0.89, p = 0.0001
Rate–pressure product (× 100)200.6 (58.1)216.4 (64.1)p < 0.05y = 0.82x+235, r = 0.82, p = 0.0001
Group B (60 mins)
Total exercise time (s)342 (164) 347 (165)NSy = 0.89x+41.6, r = 0.95, p = 0.0001
Time to angina (s)206 (110)224 (118)NSy = 0.99x+19.9, r = 0.92, p = 0.0001
Time to 1 mm ST (s)222 (133) 258 (152)NSy = 1.1x+15.7,r = 0.96, p = 0.0001
Maximum ST (mm)2.1 (0.9)1.9 (1)NSy = 0.86x+0.119,r = 0.79, p = 0.0007
Workload (METS)6.6 (2.9)6.7 (2.6) NSy = 0.84x+1.1,r = 0.96, p = 0.0001
Rate–pressure product (× 100)217 (3.63) 218 (5.07)NSy = 1.1x−2932, r = 0.81, p = 0.0004
Group C (240 mins)
Total exercise time (s)329 (144) 332 (126)NSy = 1.1x−38.3, r = 0.93, p = 0.0001
Time to angina (s)231 (105)244 (148)NSy = 1.2x36.5, r = 0.85, p < 0.0001
Time to 1 mm ST (s)247 (132) 259 (95)NSy = 1.08x32.3,r = 0.78, p = 0.01
Maximum ST (mm)1.8 (0.8)1.43 (0.44)NSy = 1.05x+0.298,r = 0.58, p = NS
Workload (METS)6.5 (2.4)6.5 (2.2) NSy = 1.1x−0.61,r = 0.94, p = 0.0001
Rate–pressure product (× 100)241 (40) 247 (58)NSy= 0.56x−10372,r = 0.80, p = 0.003
• METS, metabolic equivalents.