Background
This study examines leisure time sedentary behavior (LTSB) and usual occupational/domestic activity (UODA) and the relationship with metabolic syndrome and individual cardiovascular disease (CVD) risk factors, independent of physical activity level.
Methods
NHANES 2003–2006 data from men (n=1868) and women (n=1688) with fasting measures were classified as having metabolic syndrome by the AHA/NHLBI definition. LTSB was determined from self-reported TV viewing and computer usage. UODA was self-reported daily behavior (sitting, standing, walking, carrying loads).
Results
LTSB ≥4 hr/day was associated with odds of having metabolic syndrome of 1.94 (95% CI:1.24, 3.03) in men compared to ≤1 hr/day. LTSB ≥4 hr/day was also associated with higher odds of elevated waist circumference (1.88, CI:1.03, 3.41), low HDL-cholesterol (1.84, CI:1.33, 2.51), and high blood pressure (1.55, CI:1.07, 2.24) in men. LTSB 2–3 hr/day was associated with higher odds of elevated glucose (1.32, CI:1.00, 1.75) in men. In women, odds of metabolic syndrome were 1.54 (CI:1.00, 2.37) with ≥4 hr/day LTSB, but LTSB was not associated with risk of the individual CVD risk factors. Higher LTSB was associated with metabolic syndrome in inactive men (1.50, CI:1.07, 2.09), active men (1.74, CI:1.11, 2.71), inactive women (1.69, CI:1.24, 2.33), but not active women (1.62, CI:0.87,3.01). UODA was not associated with metabolic syndrome or CVD risk factors in either men or women.
Conclusions
In men, high LTSB is associated with higher odds of metabolic syndrome and individual CVD risk factors regardless of meeting physical activity recommendations. In women, high LTSB is associated with higher odds of metabolic syndrome only in those not meeting the physical activity recommendations.