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. 2011 Feb;34(2):497-503.
doi: 10.2337/dc10-0987.

Sedentary activity associated with metabolic syndrome independent of physical activity

Andrea Bankoski  1 , Tamara B Harris, James J McClain, Robert J Brychta, Paolo Caserotti, Kong Y Chen, David Berrigan, Richard P Troiano, Annemarie Koster
Affiliations

Sedentary activity associated with metabolic syndrome independent of physical activity

Andrea Bankoski et al. Diabetes Care. 2011 Feb.

Abstract

Objective: This study examined the association between objectively measured sedentary activity and metabolic syndrome among older adults.

Research design and methods: Data were from 1,367 men and women, aged ≥ 60 years who participated in the 2003-2006 National Health and Nutrition Examination Survey (NHANES). Sedentary time during waking hours was measured by an accelerometer (<100 counts per minute). A sedentary bout was defined as a period of time >5 min. A sedentary break was defined as an interruption in sedentary time (≥ 100 counts per minute). Metabolic syndrome was defined according to the Adult Treatment Panel (ATP) III criteria.

Results: On average, people spent 9.5 h (65% of wear time) as sedentary. Compared with people without metabolic syndrome, people with metabolic syndrome spent a greater percentage of time as sedentary (67.3 vs. 62.2%), had longer average sedentary bouts (17.7 vs. 16.7 min), had lower intensity during sedentary time (14.8 vs. 15.8 average counts per minute), and had fewer sedentary breaks (82.3 vs. 86.7), adjusted for age and sex (all P < 0.01). A higher percentage of time sedentary and fewer sedentary breaks were associated with a significantly greater likelihood of metabolic syndrome after adjustment for age, sex, ethnicity, education, alcohol consumption, smoking, BMI, diabetes, heart disease, and physical activity. The association between intensity during sedentary time and metabolic syndrome was borderline significant.

Conclusions: The proportion of sedentary time was strongly related to metabolic risk, independent of physical activity. Current results suggest older people may benefit from reducing total sedentary time and avoiding prolonged periods of sedentary time by increasing the number of breaks during sedentary time.

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Figures

Figure 1
Figure 1
Adjusted mean values* and standard errors of the five sedentary variables according to the number of metabolic syndrome criteria†. *Adjusted for age and sex. †All P < 0.01. P value is based on test for trend using linear regression model.
See this image and copyright information in PMC

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