The measurement of the chest in its maximum extension during normal breathing, measured with the person standing, passing the measuring tape horizontally around the torso over the scapula bones (the shoulder blades) and just under the armpits.
Torso height - neck to waist
To facilitate taking measurements, tie a string horizontally around the waist at the highest point of the Iliac crest bones, then measure down the spine from the most protruding bone at the base of the neck (the 7th vertebrae) to the waistline.
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