Thoracoabdominal mechanics in elderly men.
D000005:Abdomen / Q000502:physiology*; D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D003964:Diaphragm / Q000502:physiology*; D006801:Humans; D008168:Lung / Q000033:anatomy & histology / Q000502:physiology; D008297:Male; D012272:Ribs / Q000033:anatomy & histology / Q000502:physiology*; D013147:Spirometry