|Abstract or Summary
- BACKGROUND: To examine the association between objectively measured light-intensity and moderate-to-vigorous-intensity physical activity (MVPA), sedentary behaviors, and biological markers in a national
sample of U.S. pregnant women, as few studies have examined these relationships among this population.
METHODS: The sample of noninstitutionalized U.S. civilians was selected by a complex, multistage probability
design. Data from the 2003–2006 National Health and Examination Survey were used. Two hundred six
pregnant women were included in the data analysis. Physical activity and sedentary data were objectively
measured via accelerometry (ActiGraph 7164). Biomarker data was obtained in the mobile examination center
from urine, blood samples, blood pressure, and anthropometric measurements. Urine and blood samples were
obtained to determine pregnancy status, C-reactive protein (CRP), high-density lipoprotein (HDL) cholesterol,
total cholesterol, and cotinine as well as fasting glucose, fasting triglycerides, and fasting low-density lipoprotein
(LDL) cholesterol data. Multivariable regression was employed to examine the association between physical
activity, sedentary behavior, and biomarker levels.
RESULTS: There was a positive association between sedentary behavior and CRP levels (beta coefficient [b] = 0.001,
p = 0.02) and LDL cholesterol (b = 0.12, p = 0.02). There was an inverse association between light-intensity physical
activity and CRP (b = -0.003; p = 0.008) and diastolic blood pressure (b = -0.03; p = 0.02), with those engaging in
higher levels of MVPA having higher HDL cholesterol (b = 6.7; p = 0.01).
CONCLUSION: Physical activity and sedentary behavior were favorably associated with various biomarkers among
pregnant women, suggesting that healthcare providers should encourage pregnant women to participate in safe
forms of physical activity behaviors while also reducing their amount of time spent in sedentary behaviors.
- Loprinzi, P. D., Fitzgerald, E. M., Woekel, E., & Cardinal, B. J. (2013). Association of Physical Activity and Sedentary Behavior with Biological Markers Among US Pregnant Women. Journal of Women's Health, 22(11), 953-958. doi:10.1089/jwh.2013.4394