Dataset Information

Change in physical activity after smoking cessation: the Coronary Artery Risk Development in Young Adults (CARDIA) study.

ABSTRACT: AIMS:To estimate physical activity trajectories for people who quit smoking, and compare them to what would have been expected had smoking continued. DESIGN, SETTING AND PARTICIPANTS:A total of 5115 participants in the Coronary Artery Risk Development in Young Adults Study (CARDIA) study, a population-based study of African American and European American people recruited at age 18-30 years in 1985/6 and followed over 25 years. MEASUREMENTS:Physical activity was self-reported during clinical examinations at baseline (1985/6) and at years 2, 5, 7, 10, 15, 20 and 25 (2010/11); smoking status was reported each year (at examinations or by telephone, and imputed where missing). We used mixed linear models to estimate trajectories of physical activity under varying smoking conditions, with adjustment for participant characteristics and secular trends. FINDINGS:We found significant interactions by race/sex (P?=?0.02 for the interaction with cumulative years of smoking), hence we investigated the subgroups separately. Increasing years of smoking were associated with a decline in physical activity in black and white women and black men [e.g. coefficient for 10 years of smoking: -0.14; 95% confidence interval (CI)?=?-0.20 to -0.07, P?

SUBMITTER: Auer R

PROVIDER: S-EPMC4088346 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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Change in physical activity after smoking cessation: the Coronary Artery Risk Development in Young Adults (CARDIA) study.

Auer Reto R Vittinghoff Eric E Kiefe Catarina C Reis Jared P JP Rodondi Nicolas N Khodneva Yulia A YA Kertesz Stefan G SG Cornuz Jacques J Pletcher Mark J MJ

Addiction (Abingdon, England) 20140504 7

<h4>Aims</h4>To estimate physical activity trajectories for people who quit smoking, and compare them to what would have been expected had smoking continued.<h4>Design, setting and participants</h4>A total of 5115 participants in the Coronary Artery Risk Development in Young Adults Study (CARDIA) study, a population-based study of African American and European American people recruited at age 18-30 years in 1985/6 and followed over 25 years.<h4>Measurements</h4>Physical activity was self-reporte ...[more]

PMID: 24690003

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Project description:BACKGROUND:Dyslipidemia causes coronary heart disease in middle-aged and elderly adults, but the consequences of lipid exposure during young adulthood are unclear. OBJECTIVE:To assess whether nonoptimal lipid levels during young adulthood cause atherosclerotic changes that persist into middle age. DESIGN:Prospective cohort study. SETTING:4 cities in the United States. PARTICIPANTS:3258 participants from the 5115 black and white men and women recruited at age 18 to 30 years in 1985 to 1986 for the CARDIA (Coronary Artery Risk Development in Young Adults) study. MEASUREMENTS:Low-density lipoprotein (LDL) and high-density lipoprotein (HDL) cholesterol, triglycerides, and coronary calcium. Time-averaged cumulative exposures to lipids between age 20 and 35 years were estimated by using repeated serum lipid measurements over 20 years in the CARDIA study; these measurements were then related to coronary calcium scores assessed later in life (45 years [SD, 4]). RESULTS:2824 participants (87%) had nonoptimal levels of LDL cholesterol (>or=2.59 mmol/L [>or=100 mg/dL]), HDL cholesterol (<1.55 mmol/L [<60 mg/dL]), or triglycerides (>or=1.70 mmol/L [>or=150 mg/dL]) during young adulthood. Coronary calcium prevalence 2 decades later was 8% in participants who maintained optimal LDL levels (<1.81 mmol/L [<70 mg/dL]), and 44% in participants with LDL cholesterol levels of 4.14 mmol/L (160 mg/dL) or greater (P < 0.001). The association was similar across race and sex and strongly graded, with odds ratios for coronary calcium of 1.5 (95% CI, 0.7 to 3.3) for LDL cholesterol levels of 1.81 to 2.56 mmol/L (70 to 99 mg/dL), 2.4 (CI, 1.1 to 5.3) for levels of 2.59 to 3.34 mmol/L (100 to 129 mg/dL), 3.3 (CI, 1.3 to 7.8) for levels of 3.37 to 4.12 mmol/L (130 to 159 mg/dL), and 5.6 (CI, 2.0 to 16) for levels of 4.14 mmol/L (160 mg/dL) or greater, compared with levels less than 1.81 mmol/L (<70 mg/dL), after adjustment for lipid exposure after age 35 years and other coronary risk factors. Both LDL and HDL cholesterol levels were independently associated with coronary calcium after participants who were receiving lipid-lowering medications or had clinically abnormal lipid levels were excluded. LIMITATION:Coronary calcium, although a strong predictor of future coronary heart disease, is not a clinical outcome. CONCLUSION:Nonoptimal levels of LDL and HDL cholesterol during young adulthood are independently associated with coronary atherosclerosis 2 decades later. PRIMARY FUNDING SOURCE:National Heart, Lung, and Blood Institute.

Dataset Information

Change in physical activity after smoking cessation: the Coronary Artery Risk Development in Young Adults (CARDIA) study.

Publications

Change in physical activity after smoking cessation: the Coronary Artery Risk Development in Young Adults (CARDIA) study.

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