Correlation coefficients: peak oxygen uptake v cardiac recovery index, 4–12 months
| Test 2 (4 months after MI) | Test 3 (8 months after MI) | Test 4 (12 months after MI) | |
|---|---|---|---|
| Good prognosis group exercisers | r = 0.56 (p < 0.01) | r = 0.60 (p < 0.001) | r = 0.64 (p < 0.001) |
| Poor prognosis group exercisers | r = 0.56 (p < 0.01) | r = 0.60 (p < 0.001) | r = 0.68 (p < 0.001) |
Cardiac recovery index = peak heart rate (beats/min) − 2 min recovery heart rate (beats/min).