Table 4.
Relative value of TrA-IO and EO activities.
| Posture | Breathing task | |||||
|---|---|---|---|---|---|---|
| Q-Bre | Deep-Bre | Forced-Expi | Exertion-Inspi | |||
| Inspiratory phase | ||||||
| TrA-IO/EO | (ratio) | Supine | 4.96 | 4.11 | 3.68 | 4.12 |
| Elbow-toe | 0.69 | 0.71 | 0.56 | 1.59* | ||
| Expiratory phase | ||||||
| TrA-IO/EO | (ratio) | Supine | 4.66 | 3.98 | 3.01 | 4.46 |
| Elbow-toe | 0.62 | 0.75 | 1.06* | 1.46* | ||
TrA-IO transverse abdominal and internal oblique muscle, EO external oblique muscle, Q-Bre quiet nasal breathing, Deep nasal deep breathing until abdominal wall expansion, Forced-Expi completely forced expiration with pursed-lips until the abdominal wall hollowed, Exertion-Inspi exertional nasal inhalation with abdominal muscle isometric contraction to prevent abdominal wall expansion.
*Relative value > 1.0 in elbow-toe task.