title: Age, activity, and physical performance: an evaluation of performance models.
abstract: Two performance models relating age, physical activity, and physical performance were evaluated on 5 age cohorts involving more than 6,000 persons ranging in age from 20 to 69 years. Significant age and activity main effects, without 1 Age X Activity interaction, were obtained on 5 fitness measures and 2 activity indexes. These results are inconsistent with predictions from the moderation model, but they fit predictions from a recently formulated tonic and overpractice model of physical performance.
authors.affiliation: Gerontology Centre, Memorial University of Newfoundland, St. John's, Canada.
authors.forename: A
authors.initials: A
authors.lastname: Kozma
authors.forename: M J
authors.initials: MJ
authors.lastname: Stones
authors.forename: T E
authors.initials: TE
authors.lastname: Hannah
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology; D000328:Adult; D000368:Aged; D000375:Aging / Q000523:psychology*; D001290:Attitude; D015444:Exercise; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D008297:Male; D008875:Middle Aged; D010056:Overlearning; D010807:Physical Endurance; D010809:Physical Fitness / Q000523:psychology*