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Physical activity and hip fracture: a population-based case-control study. Swedish Hip Fracture Study Group.

Abstract：

BACKGROUND:A growing body of literature suggests that physical activity may be a protective factor against hip fracture. METHODS:To study the association between hip fracture risk and recreational physical activity at various ages, changes in activity during adult life, occupational physical activity and how risks vary by adult weight change, we performed a population-based case-control study among postmenopausal women aged 50-81 years residing in six counties in Sweden in 1993-1995. The analysis consisted of 1327 women with hip fracture and 3262 randomly selected controls. Information on leisure physical activity before age 18, at 18-30 years and during recent years was based on a questionnaire. Data on occupational physical activity were collected through an independent classification of job titles obtained from record linkage with census data from 1960, 1970 and 1980. RESULTS:There was a protective effect of recent leisure physical activity. Compared to women who reported no leisure activity, the odds ratios (OR) were 0.79 (95% CI: 0.62-1.00), 0.67 (95% CI: 0.54-0.84) and 0.48 (95% CI: 0.39-0.60) for women who exercised <1 h per week, 1-2 h per week, and 3+ h per week, respectively. These decreased OR were more pronounced in women who had lost weight after 18 years of age than in those who had gained weight. Women with high physical activity at both 18-30 years and during recent years did not have a stronger protection than those with isolated high activity late in life, after accounting for recent activity. Occupational physical activity was not associated with hip fracture risk in this study. CONCLUSIONS:Recent physical activity is protective against hip fracture. The protective effect is most pronounced in women who had lost weight after age 18.

journal_name

Int J Epidemiol

journal_title

International journal of epidemiology

authors

Farahmand BY,Persson PG,Michaëlsson K,Baron JA,Alberts A,Moradi T,Ljunghall S

doi

10.1093/ije/29.2.308

keywords:

subject

Has Abstract

pub_date

2000-04-01 00:00:00

pages

308-14

issue

eissn

0300-5771

issn

1464-3685

journal_volume

pub_type

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Physical activity and hip fracture: a population-based case-control study. Swedish Hip Fracture Study Group.