Risk factors associated with body mass index increase in men at 28 years follow-up

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Abstract

Background: Several studies have reported a general increase in body mass index (BMI). Aim: To identify factors influencing BMI changes at 28 years follow-up. Design: Prospective screening study. Methods: The cohort of the Oslo I study of 1972/73 had another screening in 2000 (Oslo II). We present data for these men, and men from Oslo I who participated in five similar studies during 1996-2001. In all, 7157 men aged 20-49 years at first screening attended two health screenings, and complete data were available for 7104. BMI change from 1972/73 to 2000 was the dependent variable in multiple regression analyses. Results: The percentage with obesity (BMI ≥30) increased overall from 2.5% to 13.5%. The overall mean (SD) BMI increased from 24.2 (2.6) kg/m 2 to 26.2 (3.4) kg/m 2. The increase was largest (3.9 (2.5) kg/m 2) among men aged 20-24 in 1972/73 and least (1.6 (2.5) kg/m 2) in those aged 45-49 years. No age trend was observed for those with BMI ≥30.0 kg/m 2 in 1972/3. On multiple regression analysis, increasing triglycerides, systolic blood pressure, age and non-fasting glucose, decreasing physical activity and not smoking were all significantly related to increasing BMI. Having stopped smoking was also related to increased BMI. Daily smoking in both 1972/73 and 2000, and daily smoking in 2000 but not in 1972/73, were inversely related to increased BMI. Discussion: There was a substantial increase in BMI, with the largest increase in the younger men, except in those who were already obese at first screening. Overall, obesity increased by 11% in the study period and was associated with multiple life-style factors. © 2006 Oxford University Press.

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APA

Lund Haheim, L., Lund Larsen, P. G., Sogaard, A. J., & Holme, I. (2006). Risk factors associated with body mass index increase in men at 28 years follow-up. QJM: An International Journal of Medicine, 99(10), 665–671. https://doi.org/10.1093/qjmed/hcl090

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