Table 1 Mean (SD) cardiovascular measures during rest, isometric exercise and recovery
From: Isometric exercise in cardiac magnetic resonance imaging: an initial experience using fast imaging
| Â | Rest | Isometric biceps exercise | Recovery | Â | Â | ||
|---|---|---|---|---|---|---|---|
| Â | Â | 1 min | 2 min | 3 min | 1 min | 3 min | 5 min |
Systolic blood pressure (mmHg) | 111 (10) | 128 (16) †| 140 (21) †| 145 (17) †| 116 (13) †| 113 (12) | 112 (11) |
Heart rate (beats.min -1 ) | 64 (9) | 80 (8)†| 81 (9)†| 82 (13)†| 65 (8) | 64 (9) | 63 (9 |
Stroke volume (mL.m -2 ) | 54 (8) | 51 (9)†| 49 (9)†| 49 (8)†| 55 (8) | 56 (9) | 54 (8) |
Cardiac output (L.min -1 .m -2 ) | 3.4 (0.5) | 4.1 (0.8)†| 4.0 (0.8)†| 4.0 (0.7)†| 3.6 (0.4) | 3.6 (0.5) | 3.4 (0.4) |
Compliance (mmHg.mL -1 .m -1 ) | 1.3 (0.3) | 1.1 (0.2)†| 1.0 (0.2)†| 0.9 (0.3)†| 1.1 (0.2) | 1.1 (0.3) | 1.2 (0.2) |
Resistance (WU.m 2 ) | 24.6 (3.4) | 24.7 (4.6) | 28.1 (6.6)†| 28.1 (4.9)†| 24.2 (3.3) | 23.8 (3.2) | 25.1 (3.4) |
End-diastolic volume (mL.m -2 ) | 82 (12) | 86 (16)†| 85 (15)†| 86 (14)†| 82 (13) | 82 (13) | 82 (14) |
Ejection fraction (%) | 67 (9) | 60 (9)†| 58 (9)†| 58 (6)†| 66 (8) | 68 (6) | 66 (5) |