Table 2.
Results from Treadmill Maximal Exercise Test: Group Averages
| Variable | 1966 |
1996 | 2006 |
||
| Baseline | After Bed Rest | Participant E included | Without Participant E | ||
| VO2max (L/min) | 3.3 (1.1) | 2.4 (1.0) | 2.9 (0.7) | 2.4 (0.6) | 2.5 (0.6) |
| VO2max (mL/kg LBM/min) | 49.7 (10.9) | 37.4 (11.4) | 42.9 (9.5) | 38.8 (11.0) | 42.3 (9.3) |
| VO2max (mL/kg/min) | 43.0 (10.9) | 31.8 (11.1) | 31.0 (7.6) | 28.5 (11.0) | 32.4 (7.9) |
| CO (L/min) | 20.0 (4.1) | 14.8 (4.8) | 21.4 (5.1) | 18.9 (2.5) | 18.8 (2.8) |
| HR (b.p.m.) | 193 (8) | 197 (7) | 181 (16) | 174 (13) | 179 (10) |
| SV (mL/beat) | 104 (22) | 75 (22) | 121 (39) | 109 (19) | 106 (20) |
| AV-DO2 (mL/O2/100 mL) | 16.2 (2.3) | 16.5 (3.2) | 13.8 (2.0) | 12.7 (3.0) | 13.4 (2.9) |
| Systolic blood pressure (mm Hg) | 204 (49) | 153 (42) | 206 (23) | 176 (9) | 175 (10) |
| Diastolic blood pressure (mm Hg) | 81 (9) | 63 (16) | 96 (22) | 82 (24) | 94 (5) |
| MAP (mm Hg) | 122 (21) | 93 (24) | 133 (15) | 114 (15) | 121 (4) |
| TPR (dyne/s/cm5) | 484 (72) | 525 (148) | 519 (138) | 651 (169) | 661 (101) |
Note: HR = heart rate; VO2max = maximal oxygen uptake; CO = cardiac output; SV = stroke volume; AV-DO2 = arteriovenous oxygen difference; LBM = lean body mass; MAP = mean arterial pressure; TPW = total peripheral resistance.