Ambulatory activity associations with cardiovascular and metabolic risk factors in smokers

We examined the association between ambulatory activity and biological markers of health in smokers. Baseline data from 985 subjects enrolled in a pharmacologic smoking cessation trial were examined. Body size, blood pressure, total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), tota...

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Bibliographic Details
Published in:Journal of physical activity & health 2011-09, Vol.8 (7), p.994-1003
Main Authors: Julius, Brad R, Ward, B Ann, Stein, James H, McBride, Patrick E, Fiore, Michael C, Colbert, Lisa H
Format: Article
Language:English
Subjects:
Adult
Biomarkers
Blood Glucose
Blood Pressure
Body Weights and Measures
C-Reactive Protein - analysis
Cardiovascular Diseases - physiopathology
Cholesterol
Creatinine - blood
Exercise
Female
Health risk assessment
Humans
Lipids - blood
Male
Metabolic syndrome
Metabolic Syndrome - physiopathology
Middle Aged
Risk Factors
Smoking
Socioeconomic Factors
Women
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Summary:We examined the association between ambulatory activity and biological markers of health in smokers. Baseline data from 985 subjects enrolled in a pharmacologic smoking cessation trial were examined. Body size, blood pressure, total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), total and small LDL particles, LDL size, high density lipoprotein cholesterol, triglycerides (TG), C-reactive protein (CRP), creatinine, fasting glucose, and hemoglobin A1c were assessed in relation to pedometer-assessed ambulatory activity, as was the odds of metabolic syndrome and CRP > 3 mg/L. Effect modification by gender was examined. Only waist circumference was lower with greater steps/day in the men and women combined (P(trend) < 0.001). No other significant relationships were noted in men, while women with ≥ 7500 steps/day had lower weight, BMI, CRP, TG, total, and small LDL particles compared with those with < 7500 steps/day. These women also had 62% and 43% lower odds of metabolic syndrome and elevated CRP, respectively, compared with the less active women. Adjustment for BMI attenuated all the associations seen in women. Greater ambulatory activity is associated with lower levels of metabolic and cardiovascular risk factors in female smokers which may, in part, be mediated by a reduction in BMI.
ISSN:1543-3080
1543-5474
DOI:10.1123/jpah.8.7.994