Turtle-Shell Posture
In a turtle-shell posture, the sternum is depressed and the anterior upper thorax is compressed. Excessive rounding tends to shift inhaled air toward the mid-to-lower posterior thorax rather than the desired upper region. The desired round…
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In a turtle-shell posture, the sternum is depressed and the anterior upper thorax is compressed. Excessive rounding tends to shift inhaled air toward the mid-to-lower posterior thorax rather than the desired upper region. The desired rounding should be produced by air expanding the thorax rather than by forcing the spine into flexion. Compression of the front side prevents normal upper thorax filling. A heavily rounded turtle-back posture is generally rejected for upper posterior thorax expansion.