Research Database

Amount of Time Spent in Sedentary Behaviors in the United States, 2003–2004

  • Published on Feb. 25, 2008

Abstract: Sedentary behaviors are linked to adverse health outcomes, but the total amount of time spent in these behaviors in the United States has not been objectively quantified. The authors evaluated participants from the 2003–2004 National Health and Nutrition Examination Survey aged ≥6 years who wore an activity monitor for up to 7 ...


Reallocating time to sleep, sedentary behaviors, or active behaviors: associations with cardiovascular disease risk biomarkers, NHANES 2005-2006.

  • Published on Jan. 17, 2014

Abstract: Sleep and sedentary and active behaviors are linked to cardiovascular disease risk biomarkers, and across a 24-hour day, increasing time in 1 behavior requires decreasing time in another. We explored associations of reallocating time to sleep, sedentary behavior, or active behaviors with biomarkers. Data (n = 2,185 full sample; n = 923 fasting subanalyses) ...


Does physical activity influence the relationship between low back pain and obesity?

  • Published on Feb. 1, 2014

Background Context: Evidence supporting an association between obesity and low back pain (LBP) continues to grow; yet little is known about the cause and effect of this relationship. Even less is known about the mechanisms linking the two. Physical activity is a logical suspect, but no study has demonstrated its ...



Adiposity and Insufficient MVPA Predict Cardiometabolic Abnormalities in Adults

  • Published on Jan. 1, 2014

Objectives To compare the extent to which different combinations of objectively measured sedentary behavior (SB) and physical activity contribute to cardiometabolic health. Design and Methods A population representative sample of 5,268 individuals, aged 20-85 years, was included from the combined 2003-2006 NHANES datasets. Activity categories were created on the combined basis ...


A Catalog of Rules, Variables, and Definitions Applied to Accelerometer Data in the National Health and Nutrition Examination Survey, 2003–2006

  • Published on June 14, 2012

Introduction The National Health and Nutrition Examination Survey (NHANES) included accelerometry in the 2003–2006 data collection cycles. Researchers have used these data since their release in 2007, but the data have not been consistently treated, examined, or reported. The objective of this study was to aggregate data from studies using NHANES accelerometry ...



Association of physical activity and sedentary behavior with biological markers among U.S. pregnant women

  • Published on Aug. 22, 2013

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 ...


Sedentary activity associated with metabolic syndrome independent of physical activity.

  • Published on February 2011

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


Comparison Of Four "Time In Intensity" Physical Activity Indices As Predictors Of Cardiometabolic Health

  • Presented on June 17, 2013

Introduction Recent physical activity (PA) guidelines incorporate recognition of the greater health benefits from higher intensity PA, but still dichotomize intensity into moderate or vigorous categories. New ubiquitous wearable accelerometry enables the estimation of intensity along the continuum from moderate intensity upwards. Purpose To compare two versions of a MET-min ...