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STUDY OBJECTIVE: To test the hypothesis that physical inactivity is an independent risk factor for hip fracture in the elderly. DESIGN: Population based, case-control study. SETTING: Metropolitan borough of Newcastle upon Tyne. PARTICIPANT: A total of 197 patients aged 50 years and over, resident in Newcastle, and admitted consecutively with a hip fracture, and 382 community controls, matched by age and sex, who had not suffered a hip fracture. MEASUREMENTS AND MAIN RESULTS: Validated methods were used to assess customary physical activity. Information on body build, cigarette smoking, and alcohol consumption was also obtained. Grip strength was measured. Physical inactivity was strongly associated with the risk of hip fracture in men and women. Subjects who did not regularly weight-bear, perform muscle-loading activities such as climbing stairs, and perform productive activities such as gardening, were all more than twice as likely to sustain a hip fracture, when compared with subjects at the higher end of the activity spectrum. These increases in risk remained after adjusting for body mass index, smoking, alcohol consumption, and dependence in daily living activities. CONCLUSIONS: Customary physical inactivity is an independent determinant of hip fracture in the elderly. Strategies to improve the day to day activity of elderly people require urgent exploration.

Original publication

DOI

10.1136/jech.47.6.441

Type

Journal article

Journal

Journal of epidemiology and community health

Publication Date

12/1993

Volume

47

Pages

441 - 443

Addresses

MRC Environmental Epidemiology Unit, University of Southampton, Southampton General Hospital.

Keywords

Humans, Hip Fractures, Activities of Daily Living, Risk Factors, Case-Control Studies, Age Factors, Sex Factors, Muscle Contraction, Aged, Aged, 80 and over, Middle Aged, Female, Male, Physical Exertion