Int. J. Environ. Res. Public Health 2014, 11(2), 1500-1519; doi:10.3390/ijerph110201500
Article

Joint Effects of Smoking and Sedentary Lifestyle on Lung Function in African Americans: The Jackson Heart Study Cohort

1,* email, 2email, 1email, 3email, 4email, 1email and 5email
Received: 21 November 2013; in revised form: 16 January 2014 / Accepted: 16 January 2014 / Published: 28 January 2014
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: This study examined: (a) differences in lung function between current and non current smokers who had sedentary lifestyles and non sedentary lifestyles and (b) the mediating effect of sedentary lifestyle on the association between smoking and lung function in African Americans. Sedentary lifestyle was defined as the lowest quartile of the total physical activity score. The results of linear and logistic regression analyses revealed that non smokers with non sedentary lifestyles had the highest level of lung function, and smokers with sedentary lifestyles had the lowest level. The female non-smokers with sedentary lifestyles had a significantly higher FEV1% predicted and FVC% predicted than smokers with non sedentary lifestyles (93.3% vs. 88.6%; p = 0.0102 and 92.1% vs. 86.9%; p = 0.0055 respectively). FEV1/FVC ratio for men was higher in non smokers with sedentary lifestyles than in smokers with non sedentary lifestyles (80.9 vs. 78.1; p = 0.0048). Though smoking is inversely associated with lung function, it seems to have a more deleterious effect than sedentary lifestyle on lung function. Physically active smokers had higher lung function than their non physically active counterparts.
Keywords: lung function; Jackson Heart Study; African Americans; smoking; sedentary lifestyle
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MDPI and ACS Style

Campbell Jenkins, B.W.; Sarpong, D.F.; Addison, C.; White, M.S.; Hickson, D.A.; White, W.; Burchfiel, C. Joint Effects of Smoking and Sedentary Lifestyle on Lung Function in African Americans: The Jackson Heart Study Cohort. Int. J. Environ. Res. Public Health 2014, 11, 1500-1519.

AMA Style

Campbell Jenkins BW, Sarpong DF, Addison C, White MS, Hickson DA, White W, Burchfiel C. Joint Effects of Smoking and Sedentary Lifestyle on Lung Function in African Americans: The Jackson Heart Study Cohort. International Journal of Environmental Research and Public Health. 2014; 11(2):1500-1519.

Chicago/Turabian Style

Campbell Jenkins, Brenda W.; Sarpong, Daniel F.; Addison, Clifton; White, Monique S.; Hickson, DeMarc A.; White, Wendy; Burchfiel, Cecil. 2014. "Joint Effects of Smoking and Sedentary Lifestyle on Lung Function in African Americans: The Jackson Heart Study Cohort." Int. J. Environ. Res. Public Health 11, no. 2: 1500-1519.

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