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99 Results for: "nhanes"

Self-reported Versus Objectively Measured Physical Activity & Cardiometabolic Biomarkers Among Youth in NHANES

  • Research Entry

Purpose To compare associations between objective and subjective measures of moderate to vigorous physical activity (MVPA) & cardiometabolic biomarkers. Methods 2174 (1110 boys) youth (12-19 years) from the 2003-6 NHANES combined surveys with self-reported MVPA (SRMVPA) in the previous 30 days & four 10-hour days of accelerometry MVPA (AMVPA) (Actigraph 7164) were included. The biomarkers […]


Sedentary Time and Cardio-Metabolic Biomarkers in US Adults: NHANES 2003–06

  • Research Entry

Aims Prolonged sedentary time is ubiquitous in developed economies and is associated with an adverse cardio-metabolic risk profile and premature mortality. This study examined the associations of objectively assessed sedentary time and breaks (interruptions) in sedentary time with continuous cardio-metabolic and inflammatory risk biomarkers, and whether these associations varied by sex, age, and/or race/ethnicity. Methods […]


ActiGraph Selected for NHANES

  • News Article

ActiGraph Ambulatory Monitoring System to be Used in National Health and Nutrition Examination Survey (NHANES) The ActiGraph GT3X+ ambulatory monitor and ActiLife5 software suite will be used to assess the physical activity and sleep habits of participants in the National Health and Nutrition Examination Survey (NHANES), an ongoing program of studies designed to assess the […]


ActiGraph Ambulatory Monitoring System to be Used in National Health and Nutrition Examination Survey (NHANES)

  • Press Release

Pensacola, FL-Feb. 14, 2011-The ActiGraph GT3X+ ambulatory monitor and ActiLife5 software suite will be used to assess the physical activity and sleep habits of participants in the National Health and Nutrition Examination Survey (NHANES), an ongoing program of studies designed to assess the health and nutritional status of children and adults in the United States. […]


Classification of occupational activity categories using accelerometry: NHANES 2003–2004

  • Research Entry

Background: An individual’s occupational activity (OA) may contribute significantly to daily physical activity (PA) and sedentary behavior (SB). However, there is little consensus about which occupational categories involve high OA or low OA, and the majority of categories are unclassifiable with current methods. The purpose of this study was to present population estimates of accelerometer-derived […]


Objectively Measured Total Accelerometer Counts and MVPA: The Relationship with Biomarkers Using 2003 – 2006 NHANES

  • Research Entry

Purpose To contrast the associations of objectively measured moderate-to-vigorous physical activity (MVPA) and total accelerometer counts with biomarkers in a representative sample of U.S. adults. Methods Data from the 2003 – 2006 NHANES were used for this analysis. The sample included adults ≥ 20 y, not pregnant or lactating, who had self-reported PA and ≥ […]


Association Between Objectively-Measured Physical Activity and Sleep, NHANES 2005–2006

  • Research Entry

Statement of Problem Epidemiological studies examining the association between physical activity and sleep have relied on self-report measures of physical activity and have primarily been conducted in older adults. Therefore, to address these gaps in the literature, the purpose of the present study was to examine the association between objectively-measured physical activity and a variety […]


Gender, mental health service use and objectively measured physical activity: Data from the National Health and Nutrition Examination Survey (NHANES 2003-2004)

  • Research Entry

Objective To examine the relationship between physical activity levels measured objectively by accelerometry and the use of mental health services (MHS) in a representative sample of males and females. Method NHANES 2003-2004 is a cross-sectional study of the civilian, non-institutionalized US adult population. Participants reported whether or not they had seen a mental health professional […]


Moderate-to-vigorous Physical Activity And Sleep Duration Associate With Greater Odds Of Hypertension: Nhanes 2005-2006

  • Research Entry

Purpose: Moderate-to-vigorous physical activity (MVPA) and sleep behaviors have been independently associated with increased risk for hypertension (HTN), the leading risk factor for stroke and heart disease. However, these behaviors may be synergistic in contributing to HTN. The purpose of this study was to examine the odds of hypertension diagnosis (HTN) dependent on MVPA and […]


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

  • Research Entry

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) […]


Sedentary/active Behaviors And Cardiometabolic Risk: Protective Effects Of Sleep Duration, Nhanes 2005-2006

  • Research Entry

Optimal sleep duration (7-8h), moderate-to-vigorous intensity physical activity (MVPA) and light-intensity activity are beneficially associated with cardiometabolic outcomes and related biomarkers, while sedentary time and long (≥9h) or short (<7h) sleep duration are detrimentally associated. Purpose This study examined whether sleep duration modified the relationship between both sedentary/active behaviors and cardiometabolic risk biomarkers. Methods Adult […]


The Relationship of Actigraph Accelerometer Cut-Points for Estimating Physical Activity With Selected Health Outcomes: Results From NHANES 2003-06

  • Research Entry

The purpose of this study was to examine the influence of child and adult cut-points on physical activity (PA) intensity, the prevalence of meeting PA guidelines, and association with selected health outcomes. Participants (6,578 adults ≥ 18 years, and 3,174 children and adolescents ≤ 17 years) from the National Health and Nutrition Examination Survey 2003-06 […]


Impact of Accelerometer Wear Time on Physical Activity Data: A NHANES Semisimulation Data Approach

  • Research Entry

Background Current research practice employs wide-ranging accelerometer wear time criteria to identify a valid day of physical activity (PA) measurement. Objective To evaluate the effects of varying amounts of daily accelerometer wear time on PA data. Methods A total of 1000 days of accelerometer data from 1000 participants (age=38.7±14.3 years; body mass index=28.2±6.7 kg/m2) were […]


Measurement Considerations of Peak Cadence Measures using NHANES Data

  • Research Entry

Background: A recent technological advancement in accelerometers has enabled the researchers to examine the cadence (i.e., steps/minute) in a free-living environment, which can be used to quantify the intensity of walking activity (i.e., peak cadence). However, little is known about the optimal measurement conditions (i.e., the number of days and the inclusions of weekdays or […]


Associations Between Physical Activity and Metabolic Syndrome: Comparison Between Self-Report and Accelerometry

  • Research Entry

Purpose: To assess the relationship between self-reported and objectively measured physical activity (PA) and metabolic syndrome and its risk factors in U.S. adults. Design: A cross-sectional design was used for this study. Setting: The study was set among a nationally representative sample of U.S. adults. Subjects: Adults, ages 20 years and older, from the National […]


Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE)

  • Research Entry

Background: We compared 24-hour waist-worn accelerometer wear time characteristics of 9–11 year old children in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) to similarly aged U.S. children providing waking-hours waist-worn accelerometer data in the 2003–2006 National Health and Nutrition Examination Survey (NHANES). Methods: Valid cases were defined as having ≥4 days […]


Physical activity and sedentary behavior measured objectively and subjectively in overweight and obese adults with schizophrenia or schizoaffective disorders.

  • Research Entry

Objective: Describe objective and subjective physical activity levels and time spent being sedentary in adults with schizophrenia or schizoaffective disorders (SZO/SA). Method: Baseline physical activity and sedentary behaviors were assessed among 46 overweight and obese community-dwelling adults (aged 18-70 years; BMI > 27 kg/m(2)) diagnosed with SZO/SA by DSM-IV-TR, with mild symptom severity (Positive and […]


Physical Activity and Sedentary Behavior Among Adults 60 Years and Older: New York City Residents Compared to a National Sample

  • Research Entry

This study describes moderate to vigorous physical activity (MVPA) and sedentary behavior among New York City (NYC) residents 60 years and older and compare to national United States’ estimates. Adults aged 60 or older living in NYC (n=760) were compared to similar aged adults from the National Health and Nutrition Examination Survey (NHANES) (n=2451 adults). […]


Are adults with bipolar disorder active? Objectively measured physical activity and sedentary behavior using accelerometry

  • Research Entry

Background: Little is known about physical activity and sedentary behavior of adults with bipolar disorder (BP). Physical activity and sedentary behaviors may be modifiable factors associated with elevated rates of obesity, diabetes, cardiovascular disease, metabolic syndrome, and mortality in adults with BP. Methods: Sixty adult outpatients treated for BP (> 18 yr) wore accelerometers for […]


Associations among Physical Activity, Diet Quality, and Weight Status in U.S. Adults

  • Research Entry

Purpose: Nearly 70% of adult Americans are overweight or obese, but the associations between physical activity, diet quality, and weight status have not been examined in a representative sample of U.S. adults. The purpose of this study was to examine the associations among moderate-to-vigorous physical activity (MVPA), diet quality, and weight status within and across […]