Conceptual challenges in linking physical activity and disability research.
Stewart
Anita L
AL
Institute for Health and Aging, University of California-San Francisco, San Francisco, California 94118, USA. anitast@itsa.ucsf.edu
D000203:Activities of Daily Living; D000368:Aged; D000375:Aging / Q000502:physiology; D035843:Biomedical Research; D003210:Concept Formation; D006233:Persons with Disabilities; D006801:Humans; D020966:Muscular Disorders, Atrophic; D012149:Restraint, Physical