Table 2.
Hemodynamic responses and echocardiographic measurements at rest and at loads of 333 gr·kg-1 and no weights. Data are means (±SD).
| VARIABLES | REST | 333 gr·kg-1 | NO WEIGHTS |
|---|---|---|---|
| HR (beats·min-1) | 85.4 (9.1) | 133.2 (7.1) ‡ | 121.4 (5.6) ‡ |
| SV (ml) | 54.2 (6.7) | 53.3 (5.8) | 56.1 (5.0) |
| Q (l·min-1) | 4.6 (.4) | 7.1 (1.1) ‡ | 6.8 (1.2) ‡ |
| EDV (ml) | 85.6 (4.4) | 93.1 (3.2) ‡ | 95.4 (6.0) ‡ |
| ESV(ml) | 31.4 (3.2) | 39.8 (3.2) ‡ | 39.3 (2.8) ‡ |
| EF (%) | 63.3 (5.0) | 57.3 (5.1) ‡ | 58.8 (5.2) ‡ |
| P/V (ratio) | 3.3 (.6) | 3.7 (.8) | 3.3 (.7) |
| SBP (mmHg) | 102.1 (7.0) | 147.7 (7.0) ‡ | 129.8 (7.1) *‡ |
| DBP (mmHg) | 66.4 (6.0) | 69.3 (3.1) | 66.4 (3.7) |
| MABP (mmHg) | 78.3 (4.0) | 95.4 (4.3) ‡ | 87.5 (3.8) *‡ |
| TPR (dynes·s-1·cm-5) | 1362 (102) | 1075 (99) ‡ | 1030 (76) ‡ |
| VO2(ml·kg-1·min-1) | 3.1 (.6) | 13.6 (1.3)‡ | 10.5 (1.1) *‡ |
| VO2(% of VO2max) | .07 (.01) | 31.4 (5.7) ‡ | 24.2 (4.7) *‡ |
Abbreviations: HR = Heart Rate, SV= Stroke Volume, Q = Cardiac output, EDV = End Diastolic Volume, ESV = End Systolic Volume, EF = Ejection Fraction, P/V = SBP/ESV, SBP = Systolic Blood Pressure, DBP = Diastolic Blood Pressure, MABP = Mean Arterial Blood Pressure, TPR = Total Peripheral Resistance, VO2 = Oxygen uptake.
* denotes p < 0.05 between work-loads.
‡ denotes p < 0.05 compared with rest.