Abstract P414: Accelerometer Measured Physical Activity Differs Based on Ideal Cardiovascular Health Level: NHANES 2003-2006
Background: The AHA set its 2020 Strategic Impact Goal to improve the cardiovascular (CV) health of all Americans. Using evidence on 7 modifiable CV disease risk factors (smoking, body mass index (BMI), physical activity, diet, blood pressure (BP), total cholesterol and fasting glucose), ideal, intermediate, and poor levels have been defined. Research is required to understand the relationships among these ideal CV criteria, and the extent to which they carry independent health risks.
Purpose: To determine if differences in accelerometry measured moderate-vigorous activity (MVPA) exist among the three levels of all other 6 CV health factors, and whether a linear relationship exists between MVPA and the number of ideal CV health factors.
Methods: Overall, 2731 fasted, non-pregnant participants ≥20 yr/age who had ≥4 days of valid accelerometer data (10+ hours of wear per day) were used from the 2003-2006 National Health and Nutrition Examination Survey (NHANES). All analyses were conducted using SAS 9.2 sample survey procedures to account for the complex NHANES sampling design, oversampling, and non-response. Results are weighted to represent the US population. SURVEYREG procedure was used to determine significant trends, followed by pairwise contrast analysis to compare MVPA among the CV health levels and with an increasing number of ideal CV health factors.
Results: Mean MVPA for the total sample was 25.6±0.9min/day [mean±SEM]. A total of 54% had ≤ 2 ideal CV health factors. There was a significant linear trend for MVPA and the number of other ideal CV health factors (p<.0001). However, there was no significant difference in MVPA between those with 3, 4, and 5 ideal CV health factors (27.9±1.3, 30.7±1.2, and 31.1±2.3 min/day, respectively) or between those with 1 and 2 factors (23.6±0.8 and 21.6±1.0 min/day). Those with ≥3 factors had significantly higher MVPA than participants with ≤2 factors. Significant increasing linear trends in MVPA were also observed among the three CV health levels for BMI, BP, and glucose (all p<.0001). Those with a poor level of BMI, BP and glucose had significantly lower MVPA than individuals at the intermediate and ideal levels. No significant linear trends were observed for cholesterol, smoking and diet. Interestingly, a significant difference (p=.02) was observed between the ideal (26.3±0.9 min/day) and poor levels (23.0±1.1 min/day) for smoking.
Conclusions: There is a significant relationship between MVPA and the number of other ideal CV Health factors in the U.S. Population. These results support the inclusion of physical activity as a component in the definition of ideal CV health.
- © 2013 by American Heart Association, Inc.