Physical resistance in the aged.
D000367:Age Factors; D000368:Aged; D000375:Aging / Q000502:physiology; D005826:Genetics, Medical; D006760:Hospitalization; D006801:Humans; D008136:Longevity; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D009017:Morbidity; D010809:Physical Fitness; D012189:Retrospective Studies