- Where does my ‘support’ come from? Have you heard of the diaphragm?
The diaphragm is the most crucial muscle used for inspiration. It is attached to the base of the sternum, the lower parts of the rib cage, and the spine. As the diaphragm contracts, it increases the length and diameter of the chest cavity, by contracting and descending, and consequently expands the lungs (Lechtzin, 2014). This procedure results the abdominal walls to bulge outward as the organs are pushed down in the abdominal cavity. This is possibly why your teacher tells you to use your lower abdomen.
The extent and effectiveness of the movements of the diaphragm is heavily influenced by one’s posture. Poor postures will disable the free expansion of the abdominal walls, with a consequence of a reduction in vital capacity. Therefore, it is essential for singers to learn how to maintain correct posture during singing.
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