Table 3.
Absolute values for myocardial velocities, strain rate, and strain recorded in the basal anterior segment at rest, immediately after exercise, and during recovery
| Pre-exercise | Time after exercise | ||||
| Immediate | 15 min | 30 min | 60 min† | ||
| Group A (CAD, n = 16) | |||||
| V sys (cm/s) | 3.67 (1.7) | 4.79 (3.2)* | 3.95 (1.3) | 4.25 (2.7) | 4.43 (2.7) |
| V E (cm/s) | −4.40 (2.1) | −4.36 (3.2)* | −4.11 (1.6) | −3.79 (1.9) | −3.88 (2.5) |
| V A (cm/s) | −4.26 (2.3) | −4.02 (2.7)** | −4.01 (2.0) | −3.99 (2.3) | −4.51 (2.2) |
| SR sys (1/s) | −1.39 (0.6) | −1.04 (0.9)** | −1.52 (0.4) | −1.38 (0.5) | −1.17 (0.4) |
| SR E (1/s) | 1.39 (0.6) | 1.05 (0.8)* | 1.45 (0.6) | 1.16 (0.4) | 1.18 (0.5) |
| SR A (1/s) | 1.40 (0.6) | 1.00 (1.0)* | 1.37 (0.6) | 1.28 (0.5) | 1.36 (0.7) |
| ɛ sys (%) | −21.35 (8.8)* | −13.57 (8.7)** | −19.41 (7.2) | −17.04 (5.7)* | −16.46 (6.8)* |
| ɛ E (%) | 11.83 (6.3) | 7.27 (4.7)* | 9.37 (4.2)* | 9.40 (4.3)* | 8.07 (3.4)* |
| ɛ A (%) | 8.71 (3.9) | 6.56 (3.8)* | 7.67 (3.7)* | 8.04 (4.0)* | 7.85 (3.5) |
| Group B (controls, n = 12) | |||||
| V sys (cm/s) | 3.44 (1.7) | 6.61 (2.0) | 3.48 (1.9) | 3.63 (1.6) | 3.23 (1.5) |
| V E (cm/s) | −3.48 (1.6) | −5.43 (2.3) | −4.24 (1.4) | −3.95 (2.7) | −3.99 (2.0) |
| V A (1/s) | −3.59 (1.9) | −5.77 (1.9) | −4.11 (2.2) | −4.62 (2.3) | −4.54 (2.1) |
| SR sys (1/s) | −1.13 (0.7) | −1.83 (0.5) | −1.29 (0.9) | −1.19 (0.5) | −1.30 (0.6) |
| SR E (1/s) | 1.17 (0.4) | 1.61 (0.5) | 1.37 (1.0) | 1.23 (0.5) | 1.55 (0.8) |
| SR A (1/s) | 1.07 (0.5) | 1.73 (0.6) | 1.35 (0.9) | 1.32 (0.5) | 1.45 (0.7) |
| ɛ sys (%) | −14.13 (3.7) | −18.25 (7.9) | −17.46 (8.6) | −16.65 (6.9) | −17.93 (7.4) |
| ɛ E (%) | 8.80 (3.5) | 9.81 (3.6) | 10.84 (4.3) | 9.41 (4.2) | 11.48 (5.2) |
| ɛ A (%) | 6.13 (2.9) | 8.10 (5.7) | 8.47 (3.6) | 7.54 (2.9) | 7.99 (4.8) |
Data are mean (SD).
*p<0.05, **p<0.01 versus group B; †diseased 60 minute data based on sample size of 14.
ɛ A, late diastolic strain; ɛ E, early diastolic strain ; ɛ sys, end systolic strain; SR A, maximum late diastolic strain rate; SR E, maximum early diastolic strain rate; SR sys, maximum systolic strain rate; V A, maximum late diastolic velocity; V E, maximum early diastolic velocity; V sys, maximum systolic velocity.