Table 2.
Slope of the gastric to transdiaphragmatic pressure ratio (Pga/Pdi) over the range of underlying Pdi studied during the three experimental conditions.
| Volitional underlying effort | Single breath inspiratory threshold loading | Sustained inspiratory threshold loading | |
|---|---|---|---|
| subject # 1 | 0.001205ns | −0.000618ns | −0.006111° |
| subject # 2 | 0.002875* | 0.008295* | 0.000253ns |
| subject # 3 | −0.002505° | −0.000585ns | |
| Subject # 4 | 0.004345* | −0.002961ns | −0.000197ns |
| Subject # 5 | 0.000041ns | 0.000546ns | −0.000825ns |
| Subject # 6 | 0.003075ns | 0.001612ns | 0.008076* |
| Subject # 7 | 0.002590* | 0.006949ns | |
| Subject # 8 | −0.000747ns | 0.002988* | −0.005481° |
| Subject # 9 | −0.000515ns | 0.005537* | |
| Subject # 10 | −0.004495° | −0.000438ns | |
| Subject # 11 | 0.003656* | −0.002304ns | |
| Subject # 12 | 0.004056ns | 0.010400* | |
| Subject # 13 | −0.002739° | 0.001997* | |
| Subject # 14 | −0.003207° | 0.003598* |
The symbol “ns” indicates that Pga/Pdi did not significantly vary over the range of underlying Pdi studied, the symbol “*” indicates that it increased significantly, and the symbol “°” indicates that decreased significantly.