Table 2 Subjects’ exercise responses
Control subjects (n = 9) | TBsq patients (n = 49) | |||
|---|---|---|---|---|
Rest | Peak | Rest | Peak | |
\( \dot{V} {\text{O}}_{2} \) (mL kg−1 min−1) | 4.1 ± 0.3 | 28.2 ± 1.5 | 5.0 ± 0.2* | 16.1 ± 0.7§ |
\( \dot{V} {\text{O}}_{2} \) (% predicted) | 104.4 ± 7.7 | 58.3 ± 2.2§ | ||
Dyspnea (borg scale) | 0.1 ± 0.1 | 7.8 ± 0.3 | 0.1 ± 0.1 | 8.5 ± 0.2 |
HR (beats min−1) | 81 ± 3 | 144 ± 5 | 92 ± 2* | 128 ± 3* |
\( \dot{V} {\text{O}}_{2} \)/HR (mL beats−1) | 2.7 ± 0.2 | 10.4 ± 0.6 | 2.8 ± 0.1 | 6.4 ± 0.3‡ |
f (beats min−1) | 22 ± 2 | 34 ± 2 | 27 ± 1 | 39 ± 1 |
VT (mL) | 577 ± 60 | 1611 ± 160 | 517 ± 16 | 829 ± 37§ |
\( \dot{V}_{\text{E}} \) (L min−1) | 12.2 ± 0.7 | 54.3 ± 4.6 | 13.2 ± 0.4 | 31.3 ± 1.4§ |
VD/VT-ratio | 0.40 ± 0.03 | 0.22 ± 0.01 | 0.39 ± 0.01 | 0.32 ± 0.01‡ |
pH | 7.420 ± 0.005 | 7.358 ± 0.009 | 7.407 ± 0.004 | 7.335 ± 0.006 |
PaO2 (mmHg) | 97.4 ± 3.1 | 84.3 ± 2.7 | 84.4 ± 1.7† | 58.6 ± 1.5§ |
PaCO2 (mmHg) | 36.5 ± 0.8 | 38.1 ± 0.9 | 43.2 ± 0.9‡ | 49.8 ± 1.1§ |
LT (mg dl−1) | 10.1 ± 1.3 | 43.8 ± 5.5 | 10.7 ± 0.6 | 25.9 ± 1.5† |
NE (ng mL−1) | 0.4 ± 0.0 | 2.3 ± 0.5 | 0.9 ± 0.1‡ | 3.5 ± 0.3* |