Key result
In normal subjects, quiet breathing is predominantly abdominal when supine and thoracic when upright, with rapid maneuvers mostly accomplished through rib cage displacement.
Population
81 normal subjects including 32 young and middle-aged men, 29 young and middle-aged women, and 20 elderly men
Design
Cross-sectional
Authors
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Establishes normative chest wall partitioning data in healthy adults; leaves open clinical translation and disease applications.
Observational (n=81)
In normal subjects, quiet breathing is primarily abdominal when supine and thoracic when upright, while rapid maneuvers rely mostly on rib cage displacement.
Sharp et al. (1975) conducted an observational in Healthy (normal subjects) (n=81). Respiratory maneuvers and postural changes was evaluated on Partition of respired gas volumes into rib cage and diaphragm-abdomen components. In normal subjects, quiet breathing is predominantly abdominal when supine and thoracic when upright, with rapid maneuvers mostly accomplished through rib cage displacement.
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