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Sedentary Behavior and CVD Risk Factors in Year 25 of the CARDIA Study
Author(s) -
Carpenter Katie,
Pereira Mark,
Odegaard Andrew,
Jacobs David,
Sternfeld Barbara,
Reis Jacob,
Gabriel Kelley
Publication year - 2015
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.29.1_supplement.lb275
Subject(s) - medicine , waist , sitting , sedentary lifestyle , blood pressure , body mass index , screen time , physical therapy , demography , physical activity , pathology , sociology
Sedentary time may have implications for chronic disease risk, independent of total physical activity. The objective of this study was to examine sedentary time in relation to cardiometabolic risk in 3302 black and white adults of the CARDIA Study. A sedentary index (hrs/day) was derived from a questionnaire including the following activities while sitting: driving or passenger in car, computer use, listening to music, arts, crafts, reading, paperwork, telephone, and television. Cardiometabolic risk (CR) was estimated with a sum of z‐scores for the following risk factors: blood pressure, fasting blood glucose, triglycerides, HDL‐cholesterol (negative), and waist circumference. Multivariable linear regression was used to regress CR on quintiles of the sedentary time index, adjusted for age, sex, race, education, total physical activity, alcohol, and smoking. We observed a graded dose‐response positive association between the sedentary index and CR (p<.0001). Adjusted means for the five quintiles were as follows: ‐0.72, ‐0.19, 0.16, 0.23, 0.56 (s.e. ~ 0.12 for all). Total physical activity was inversely associated with CR in the model (p<.0001). Although cross sectional, results suggest that sedentary time is independently associated with cardiometabolic risk factors independent of total activity. Prospective and intervention studies are warranted.