Table 2.
Daily pulmonary function results during ten experimental days in control and hyperpnea training subjects
| Control subjects | Day 1 | Day 2 | Day 3 | Day 4 | Day 5 | Day 6 | Day 7 | Day 8 | Day 9 | Day 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| SVC, L | 5.1 ± 1.0 | 5.0 ± 0.9 | 5.2 ± 0.9 | 5.1 ± 1.0 | 4.9 ± 0.9 | 5.0 ± 1.0 | 5.0 ± 0.9 | 5.0 ± 1.0 | 5.0 ± 1.0 | 4.9 ± 1.0 |
| FVC, L | 4.9 ± 1.2 | 4.9 ± 1.1 | 5.0 ± 1.1 | 4.9 ± 1.1 | 4.8 ± 1.1 | 5.0 ± 1.0 | 4.9 ± 1.0 | 4.8 ± 1.0 | 4.9 ± 0.9 | 4.8 ± 1.0 |
| FEV1, L | 4.3 ± 1.1 | 4.2 ± 1.0 | 4.2 ± 1.0 | 4.2 ± 1.0 | 4.1 ± 1.0 | 4.2 ± 0.9 | 4.1 ± 1.0 | 4.1 ± 0.9 | 4.2 ± 0.9 | 4.2 ± 1.0 |
| FEV1/FVC | .86 ± .06 | .86 ± .05 | .86 ± .06 | .85 ± .05 | .85 ± .04 | .85 ± .05 | .85 ± .06 | .85 ± .06 | .85 ± .07 | .86 ± .06 |
| PEF, L·sec−1 | 9.8 ± 2.2 | 10.2 ± 2.4 | 10.0 ± 2.5 | 9.8 ± 2.7 | 10.2 ± 2.8 | 10.0 ± 2.6 | 10.0 ± 2.5 | 9.9 ± 2.5 | 10.1 ± 2.3 | 10.0 ± 2.5 |
| MVV, L·min−1 | 186 ± 61 | 186 ± 53 | 184 ± 54 | 182 ± 54 | 185 ± 56 | 181 ± 56 | 183 ± 55 | 186 ± 61 | 188 ± 57 | 187 ± 65 |
| MVV, % change | - | 1.4 ± 9.7 | −0.2 ± 5.6 | −1.3 ± 7.4 | 0.02 ± 8.3 | −2.2 ± 9.8 | −0.9 ± 8.2 | −0.1 ± 8.5 | 2.0 ± 11.0 | −0.02 ± 10.2 |
| Training subjects | ||||||||||
| SVC, L | 4.8 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.7 ± 1.3 | 4.7 ± 1.3 |
| FVC, L | 4.7 ± 1.2 | 4.7 ± 1.2 | 4.6 ± 1.2 | 4.7 ± 1.3 | 4.7 ± 1.2 | 4.7 ± 1.3 | 4.6 ± 1.3 | 4.6 ± 1.3 | 4.6 ± 1.3 | 4.6 ± 1.3 |
| FEV1, L | 3.9 ± 0.9 | 3.9 ± 0.8 | 3.8 ± 0.9 | 3.9 ± 1.0 | 3.9 ± 0.9 | 3.9 ± 0.9 | 3.8 ± 1.0 | 3.8 ± 0.9 | 3.8 ± 0.9 | 3.8 ± 0.9 |
| FEV1/FVC | .83 ± .07 | .86 ± .1 | .83 ± .1 | .83 ± .1 | .84 ± .1 | .83 ± .1 | .83 ± .1 | .83 ± .1 | .84 ± .1 | .84 ± .1 |
| PEF, L·sec−1 | 8.6 ± 2.0 | 8.6 ± 1.9 | 8.4 ± 1.8 | 8.5 ± 2.0 | 8.7 ± 2.0 | 8.5 ± 1.9 | 8.4 ± 2.0 | 8.5 ± 1.9 | 8.4 ± 2.1 | 8.3 ± 1.8 |
| MVV, L·min−1 | 168 ± 38 | 161 ± 39 | 163 ± 35 | 160 ± 33 | 159 ± 36* | 159 ± 37 | 156 ± 37 | 156 ± 36 | 151 ± 37* | 150 ± 35 |
| MVV, % change | - | −4.1 ± 6.1 | −2.4 ± 5.4 | −4.0 ± 3.4 | −5.3 ± 4.5 | −4.9 ± 6.0 | −6.8 ± 6.9 | −6.9 ± 5.7 | −9.8 ± 7.6 | −10.4 ± 8.9 |
SVC, slow vital capacity; FVC, forced vital capacity; FEV1, forced expiratory volume 1.0 sec; PEF, peak expiratory flow; MVV, maximal voluntary ventilation
*
P<0.05 vs. Day 1