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Hold a note/vowel using abdominal-diaphragm support only. Write down the time and duration of the note.

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Introduction

Hold a note/vowel using abdominal-diaphragm support only. Write down the time and duration of the note. Diaphragm Diaphragmatic breathing is an automatic process. Muscle tension pulls the diaphragm down from, and elasticity returns it to the elevated position. This action of the diaphragm is responsible for 29% to 63% of your lung capacity for air exchange. When the diaphragm moves down, it produces a partial vacuum (negative air pressure) in the lungs (chest cavity). This is more easily seen in the operation of a syringe, concertina, or set of bellows. When they operate, their internal dimensions are greatly increased. This increased interior space reduces the pressure on the air within. Hence, the air pressure is lower than that outside of the device (and the lungs). ...read more.

Middle

Think of the Heimlich Manoeuvre; by greater compression of the gut you can exhale more air. Ribs. You need to elevate your ribs to further increase the internal space of the chest cavity, and hence the negative pressures within. In addition, this increases the volume of air that you can exchange. In filling the lungs more fully, you have more air to support singing. Therefore, you can sustain singing for a longer period, require fewer breaths and provide better support for singing quality and volume. The ribs are hinged at the spine. As they rise, they increase the chest circumference. The interior air space is radically increased (side to side and front to back). ...read more.

Conclusion

It is obvious that the one with the larger diameter will have the greater internal capacity for fluid or air. Our director, instructs us to continually raise our chest (and hence ribs) as we sing. While we "feel" that our chest is raising, the appearance to the audience is ribs staying in the elevated position, without movement. The net result is this technique helps us to maintain our elevated chest position and the maximum air space possible. Many barbershops are not taught about this valuable available air space. This is because their coaches don't think that barbershops can do this without bobbing their shoulders up and down. Now hold the note/vowel again. This time use both the abdomen/diaphragm & ribs. Write down the time and duration and compare it to your first attempt. ...read more.

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