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
| Rest | Isometric biceps exercise | Recovery | |||||
|---|---|---|---|---|---|---|---|
| 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) |