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Active commuting reduces the risk of wrist fractures in middle-aged women: the UFO study
Umeå universitet, Medicinska fakulteten, Institutionen för samhällsmedicin och rehabilitering, Geriatrik.
Umeå universitet, Medicinska fakulteten, Institutionen för samhällsmedicin och rehabilitering, Geriatrik.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Näringsforskning. Umeå universitet, Medicinska fakulteten, Enheten för biobanksforskning.ORCID-id: 0000-0001-9581-3845
Vise andre og tillknytning
2013 (engelsk)Inngår i: Osteoporosis International, ISSN 0937-941X, E-ISSN 1433-2965, Vol. 24, nr 2, s. 533-540Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Middle-aged women with active commuting had significantly lower risk for wrist fracture than women commuting by car/bus.

INTRODUCTION: Our purpose was to investigate whether a physically active lifestyle in middle-aged women was associated with a reduced risk of later sustaining a low-trauma wrist fracture.

METHODS: The Umeå Fracture and Osteoporosis (UFO) study is a population-based nested case-control study investigating associations between lifestyle and fragility fractures. From a cohort of ~35,000 subjects, we identified 376 female wrist fracture cases who had reported data regarding their commuting habits, occupational, and leisure physical activity, before they sustained their fracture. Each fracture case was compared with at least one control drawn from the same cohort and matched for age and week of reporting data, yielding a total of 778 subjects. Mean age at baseline was 54.3 ± 5.8 years, and mean age at fracture was 60.3 ± 5.8 years.

RESULTS: Conditional logistic regression analysis with adjustments for height, body mass index, smoking, and menopausal status showed that subjects with active commuting (especially walking) were at significantly lower risk of sustaining a wrist fracture (OR 0.48; 95 % CI 0.27-0.88) compared with those who commuted by car or bus. Leisure time activities such as dancing and snow shoveling were also associated with a lower fracture risk, whereas occupational activity, training, and leisure walking or cycling were unrelated to fracture risk.

CONCLUSION: This study suggests that active commuting is associated with a lower wrist fracture risk, in middle-aged women.

sted, utgiver, år, opplag, sider
Springer, 2013. Vol. 24, nr 2, s. 533-540
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-29829DOI: 10.1007/s00198-012-1988-8ISI: 000314274400015PubMedID: 22525983OAI: oai:DiVA.org:umu-29829DiVA, id: diva2:278225
Tilgjengelig fra: 2009-11-25 Laget: 2009-11-24 Sist oppdatert: 2018-06-08bibliografisk kontrollert
Inngår i avhandling
1. Physical activity, bone density, and fragility fractures in women
Åpne denne publikasjonen i ny fane eller vindu >>Physical activity, bone density, and fragility fractures in women
2009 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Scandinavia has among the highest incidence of fragility fractures in the world. The reasons for this are unknown, but might involve differences in genetic and/or environmental factors, such as sunlight exposure and levels of physical activity. Weight-bearing exercise is thought to have a beneficial effect on bone health in the young, but few studies have evaluated whether exercise in older subjects affects bone density and protects against fragility fractures.

The initial objective of this thesis was to evaluate whether a combined weight-bearing training programme twice a week would be beneficial as regards bone mineral density (BMD) and neuromuscular function in older women. Forty-eight community living women with a mean age of 73 years were recruited for this 12-month prospective, randomised controlled trial, and were randomly assigned to an intervention group (n=24) or a control group (n=24). The intervention group displayed significant increments in BMD at the Ward’s triangle, maximum walking speed, and isometric grip strength compared to the control group. The second objective was to investigate if training effects were retained in older women five years after the cessation of training. The 40 women who completed the first study included in this thesis were invited to take part in a follow-up assessment five years later, and 34 women (~79 years) agreed to participate. During these five years both groups had sustained significant losses in hip BMD and in all neuromuscular function tests, and the previous exercise-induced intergroup differences were no longer seen.

The third and fourth objective of this thesis was to investigate whether exercise and weight-bearing leisure activities in middle-aged women are associated with a decreased risk of sustaining hip or wrist fractures at a later stage. A cohort of women participating in the Umeå Fracture and Osteoporosis (UFO) study, a longitudinal, nested case-control study investigating associations between bone markers, lifestyle, and osteoporotic fractures, was used for the purpose of this investigation. Eighty-one hip fracture cases and 376 wrist fracture cases, which had reported lifestyle data before they sustained their fracture, were identified. These cases were compared with age-matched controls identified from the same cohort. Using conditional logistic regression analysis with adjustments for height, BMI, smoking, and menopausal status, results showed that moderate frequency of leisure physical activities such as gardening and berry/mushroom picking, were associated with reduced hip fracture risk (OR 0.28; 95% CI 0.12 – 0.67), whereas active commuting (especially walking) along with dancing and snow shoveling in leisure time, reduced the wrist fracture risk (OR 0.48; 95% CI 0.27 – 0.88, OR 0.42; 95% CI 0.22 – 0.80 and OR 0.50; 95% CI 0.32 – 0.79 respectively).

In summary, this thesis suggests that weight-bearing physical activity is beneficial for BMD and neuromuscular functions such as muscle strength and gait in older women, and that a physically active lifestyle, with outdoor activities, in middle age is associated with reduced risk of both hip and wrist fractures. Possible mechanisms underlying this association include improved muscle strength, coordination, and balance, resulting in a decreased risk of falling and perhaps also direct skeletal benefits.

Publisher
s. 101
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 1298
Emneord
physical activity, bone density, neuromuscular function, fragility fractures, women
HSV kategori
Forskningsprogram
geriatrik
Identifikatorer
urn:nbn:se:umu:diva-29883 (URN)978-91-7264-867-8 (ISBN)
Disputas
2009-12-18, Sal B, 9 tr, Tandläkarhögskolan, Norrlands Universitetssjukhus, Umeå, 13:00 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2009-12-02 Laget: 2009-11-26 Sist oppdatert: 2010-01-18bibliografisk kontrollert

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