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Atherosclerosis. 2019 Mar;282:137-142. doi: 10.1016/j.atherosclerosis.2019.01.009. Epub 2019 Jan 24.

The association of midlife cardiorespiratory fitness with later life carotid atherosclerosis: Cooper Center Longitudinal Study.

Author information

1
Department of Epidemiology, Human Genetics and Environmental Sciences, Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center (UTHeath) at Houston School of Public Health in Austin, 1616 Guadalupe St, Suite 6.300, Austin, TX, 78701, USA; Section of Preventive Medicine and Epidemiology, Boston University School of Medicine, 801 Massachusetts Avenue Suite 470, Boston, MA, 02118, USA. Electronic address: lee8690@bu.edu.
2
Department of Biostatistics and Data Science, Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center (UTHealth) at Houston School of Public Health in Austin, 1616 Guadalupe St, Suite 6.300, Austin, TX, 78701, USA.
3
Department of Epidemiology, Human Genetics and Environmental Sciences, Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center (UTHeath) at Houston School of Public Health in Austin, 1616 Guadalupe St, Suite 6.300, Austin, TX, 78701, USA; Department of Kinesiology and Health Education, The University of Texas at Austin, 1912 Speedway, Stop D5000, Austin, TX, 78712, USA.
4
Cooper Institute, 12330 Preston Road, Dallas, TX, 75230, USA.
5
School of Nutrition and Health Promotion, Arizona State University, 550 N. Third St, Phoenix, AZ, 85004, USA.
6
Cooper Clinic, 12200 Preston Road, Dallas, TX, 75230, USA.
7
Department of Epidemiology, Human Genetics and Environmental Sciences, Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center (UTHeath) at Houston School of Public Health in Austin, 1616 Guadalupe St, Suite 6.300, Austin, TX, 78701, USA; Department of Kinesiology and Health Education, The University of Texas at Austin, 1912 Speedway, Stop D5000, Austin, TX, 78712, USA; Department of Women's Health Dell Medical School, The University of Texas at Austin, 1501 Red River Street, Austin, TX, 78712, USA.

Abstract

BACKGROUND AND AIMS:

While numerous cross-sectional studies have demonstrated an inverse relationship between cardiorespiratory fitness (CRF) and carotid atherosclerosis in middle age, much less is known about the association of midlife CRF with carotid atherosclerosis in later life.

METHODS:

We studied 1094 participants, free of cardiovascular disease, who completed a maximal exercise test (GXT) for an objective measure of CRF between ages 40 and 59 and carotid ultrasound after the age of 59, with at least five years between studies. Carotid intima media thickness was measured. Assessments were also made regarding the presence of plaque and percent stenosis in four regions: common carotid, bulb, internal carotid and external carotid arteries. Multivariable logistic regression models were constructed to estimate the association of CRF with carotid artery disease.

RESULTS:

At the time of GXT and carotid scan, participants were aged 50.7 ± 5.7 years and 69.3 ± 6.4 years, respectively. Almost half of participants had high midlife CRF (48.6%); 41.3% and 10.1% had moderate and low CRF, respectively. Over a mean follow-up period of 18.6 ± 8.5 years, the odds of having carotid artery disease in later life in the high CRF group was 0.50 (95% CI: 0.29-0.87) compared with the low CRF group. Each 1 MET increase in CRF was associated with 10% lower odds of having carotid artery disease (OR = 0.89, 95% CI: 0.80-0.98).

CONCLUSIONS:

Midlife CRF was inversely associated with carotid artery disease measured almost two decades later. This may represent a mechanistic link between high midlife CRF and reduced risk of stroke in later life.

KEYWORDS:

Cardiorespiratory fitness; Carotid atherosclerosis; Carotid intima media thickness; Physical activity; Stroke

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