Associations of Total Activity Counts and Physical Activity Intensity Levels with the Metabolic Syndrome: A Structural Equation Modeling Approach

摘要: PURPOSE: To contrast associations of accelerometer-measured moderate-to-vigorous physical activity (MVPA) accumulated in bouts and total counts (TAC) with cardiometabolic biomarkers U.S. adults. METHODS: Using 2003 – 2006 National Health Nutrition Examination Survey (NHANES) data, the sample was comprised adults ≥ 20 years, not pregnant or lactating, self-reported PA at least 4 days 10 hours accelerometer wear time (N = 5668). Bouted MVPA represented minutes/day 2020 counts/minute minutes longer TAC per day. Biomarkers included: cholesterol, triglyceride, glycohemoglobin, plasma glucose, C-peptide, insulin, C- reactive protein, homocysteine, blood pressure, body mass index (BMI), waist circumference, skinfolds. Nested regression models were conducted which regressed each biomarker on bouted simultaneously, while adjusting for relevant covariates. RESULTS: Results indicated more strongly associated 11 biomarkers: HDL-C, C-reactive systolic triceps skinfold, subscapular skinfold. MVPA, however, only displayed stronger BMI. CONCLUSIONS: The volume PA, by TAC, appears to have than bouts.