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Published in: Breast Cancer Research and Treatment 3/2010

01-06-2010 | Epidemiology

Metabolic profile, physical activity, and mortality in breast cancer patients

Authors: Aina Emaus, Marit Bragelien Veierød, Steinar Tretli, Sissi Espetvedt Finstad, Randi Selmer, Anne-Sofie Furberg, Leslie Bernstein, Ellen Schlichting, Inger Thune

Published in: Breast Cancer Research and Treatment | Issue 3/2010

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Abstract

Metabolic components [body mass index (BMI), blood pressure, serum lipids] and physical activity may affect biological mechanisms of importance for breast cancer prognosis. A population-based survival study among 1,364 breast cancer cases within the Norwegian Counties Study during 1974–2005 was conducted. Pre-diagnostic measurements of BMI, blood pressure, serum lipids, and self-reported physical activity were assessed. Multivariable Cox proportional hazard models were used in analyses (SAS version 9.11). Among these breast cancer cases (age at diagnosis 27–79 years), 429 women died (8.2 mean follow-up years). Those with a BMI ≥ 30 kg/m2 had a 1.47 higher risk of dying during follow-up than women with a BMI of 18.5–25 kg/m2 [hazard ratio (HR) = 1.47, 95% CI 1.08–1.99]. Women with BMI < 25 kg/m2 and age of diagnosis ≥55 years had a 66% reduction in overall mortality if they regularly exercised before diagnosis compared with sedentary women (HR = 0.34, 95% CI 0.16–0.71). Women in the highest tertile of total cholesterol had a 29% increase in mortality compared to women in the lowest tertile (HR = 1.29, 95% CI 1.01–1.64). Additionally, women in the highest tertile of blood pressure had a 41% increase in mortality compared to women in the lowest tertile of blood pressure (HR = 1.41, 95% CI 1.09–1.83). Our study supports a relationship between mortality not only in relation to BMI, but also blood pressure, lipids, and physical activity among breast cancer patients. These factors may all be important targets for invention among breast cancer patients.
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Metadata
Title
Metabolic profile, physical activity, and mortality in breast cancer patients
Authors
Aina Emaus
Marit Bragelien Veierød
Steinar Tretli
Sissi Espetvedt Finstad
Randi Selmer
Anne-Sofie Furberg
Leslie Bernstein
Ellen Schlichting
Inger Thune
Publication date
01-06-2010
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 3/2010
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-009-0603-y

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