| 摘要 |
A device for training the inspiratory muscles consists of the leakproof vessel filled partially with the fluid, the vertical tube partially dipped into the fluid, the mouth-piece, the second tube with its end being bent over the fluid level. The moth-piece is attached to the second end of the tube with the aid of the movable pipe. There is the gap between the lower end of the vertical tube and the bottom of the vessel. The length of the submerged part is within 284-364 mm. The upper part of the vertical tube is open to the atmosphere. |
