UNLABELLED: In a population-based case-control study, we demonstrate that middle-aged women who were active with walking or in different physical spare time activities were at lower risk of later sustaining a hip fracture compared to more sedentary women. INTRODUCTION: In middle-aged women participating in the Umeå Fracture and Osteoporosis (UFO) study, we investigated whether physical activity is associated with a subsequent decreased risk of sustaining a hip fracture. METHODS: The UFO study is a nested case-control study investigating associations between bone markers, lifestyle, and osteoporotic fractures. We identified 81 female hip fracture cases that had reported lifestyle data before they sustained their fracture. Each case was compared with two female controls who were identified from the same cohort and matched for age and week of reporting data, yielding a total cohort of 237 subjects. Mean age at baseline was 57.2 ± 5.0 years, and mean age at fracture was 65.4 ± 6.4 years. RESULTS: Conditional logistic regression analysis with adjustments for height, weight, smoking, and menopausal status showed that subjects who were regularly active with walking or had a moderate or high frequency of physical spare time activities (i.e. berry/mushroom picking and snow shovelling) were at reduced risk of sustaining a hip fracture (OR 0.14; 95% CI; 0.05-0.53 for walking and OR 0.19; 95% CI; 0.08-0.46, OR 0.17, 95% CI; 0.05-0.64 for moderate and high frequency of spare time activities, respectively) compared to more sedentary women. CONCLUSION: An active lifestyle in middle age seems to reduce the risk of future hip fracture. Possible mechanisms may include improved muscle strength, coordination, and balance resulting in a decreased risk of falling and perhaps also direct skeletal benefits.
UNLABELLED: In a population-based case-control study, we demonstrate that middle-aged women who were active with walking or in different physical spare time activities were at lower risk of later sustaining a hip fracture compared to more sedentary women. INTRODUCTION: In middle-aged women participating in the Umeå Fracture and Osteoporosis (UFO) study, we investigated whether physical activity is associated with a subsequent decreased risk of sustaining a hip fracture. METHODS: The UFO study is a nested case-control study investigating associations between bone markers, lifestyle, and osteoporotic fractures. We identified 81 female hip fracture cases that had reported lifestyle data before they sustained their fracture. Each case was compared with two female controls who were identified from the same cohort and matched for age and week of reporting data, yielding a total cohort of 237 subjects. Mean age at baseline was 57.2 ± 5.0 years, and mean age at fracture was 65.4 ± 6.4 years. RESULTS: Conditional logistic regression analysis with adjustments for height, weight, smoking, and menopausal status showed that subjects who were regularly active with walking or had a moderate or high frequency of physical spare time activities (i.e. berry/mushroom picking and snow shovelling) were at reduced risk of sustaining a hip fracture (OR 0.14; 95% CI; 0.05-0.53 for walking and OR 0.19; 95% CI; 0.08-0.46, OR 0.17, 95% CI; 0.05-0.64 for moderate and high frequency of spare time activities, respectively) compared to more sedentary women. CONCLUSION: An active lifestyle in middle age seems to reduce the risk of future hip fracture. Possible mechanisms may include improved muscle strength, coordination, and balance resulting in a decreased risk of falling and perhaps also direct skeletal benefits.
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Authors: Hou-Feng Zheng; Jon H Tobias; Emma Duncan; David M Evans; Joel Eriksson; Lavinia Paternoster; Laura M Yerges-Armstrong; Terho Lehtimäki; Ulrica Bergström; Mika Kähönen; Paul J Leo; Olli Raitakari; Marika Laaksonen; Geoffrey C Nicholson; Jorma Viikari; Martin Ladouceur; Leo-Pekka Lyytikäinen; Carolina Medina-Gomez; Fernando Rivadeneira; Richard L Prince; Harri Sievanen; William D Leslie; Dan Mellström; John A Eisman; Sofia Movérare-Skrtic; David Goltzman; David A Hanley; Graeme Jones; Beate St Pourcain; Yongjun Xiao; Nicholas J Timpson; George Davey Smith; Ian R Reid; Susan M Ring; Philip N Sambrook; Magnus Karlsson; Elaine M Dennison; John P Kemp; Patrick Danoy; Adrian Sayers; Scott G Wilson; Maria Nethander; Eugene McCloskey; Liesbeth Vandenput; Richard Eastell; Jeff Liu; Tim Spector; Braxton D Mitchell; Elizabeth A Streeten; Robert Brommage; Ulrika Pettersson-Kymmer; Matthew A Brown; Claes Ohlsson; J Brent Richards; Mattias Lorentzon Journal: PLoS Genet Date: 2012-07-05 Impact factor: 5.917