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60 Results for: "NHANES"

Comparing methods for creating an overall physical activity estimate from multiple accelerometer days

  • Published on Jun 21, 2017

Background: Accelerometers provide an objective assessment of physical activity and are frequently deployed for at least multiple days. However, it is unclear how to summarize multiple days into one overall physical activity estimate, particularly in the presence of missing data. This study compared summarization method prediction and precision, and the ...


Multilevel functional methods for modeling actigraphy data and its application to predicting mortality in the US population

  • Published on Jun 21, 2017

We will present the results of analysis of physical activity data collected with accelerometers on 10000+ subjects in National Health and Nutrition Examination Survey (NHANES), a nationally representative sample of the US population. The data have been analyzed with recently developed multilevel functional data analysis approaches that focus on modeling variability ...


Sensory Impairment, Functional Balance and Physical Activity With All-Cause Mortality

  • Published on Sep 2016

Objective: No study has comprehensively examined the independent and combined effects of sensory impairment, physical activity and balance on mortality risk, which was this study’s purpose. Methods: Data from the population-based 2003–2004 National Health and Nutrition Examination Survey (NHANES) was used, with follow-up through 2011. Physical activity was assessed via ...


Cardiorespiratory Fitness Among Individuals With Psoriasis in the General Population

  • Published on Jul 2016

Background Psoriasis confers risk for cardiometabolic disorders. Cardiorespiratory fitness is inversely associated with risk of cardiometabolic disorders in other populations, but limited data have been published assessing cardiorespiratory fitness among individuals with psoriasis. This investigation aimed to: 1) assess cardiorespiratory fitness among individuals with psoriasis in the general population; and 2) compare ...


National youth sedentary behavior and physical activity daily patterns using latent class analysis applied to accelerometry

  • Published on May 3, 2016

Background: Applying latent class analysis (LCA) to accelerometry can help elucidated underlying patterns. This study described the patterns of accelerometer-determined sedentary behavior and physical activity among youth by applying LCA to a nationally representative United States (US) sample. Methods: Using 2003–2006 National Health and Nutrition Examination Survey data, 3998 youths 6–17 ...


The descriptive epidemiology of accelerometer-measured physical activity in older adults

  • Published on Jan. 7, 2016

Background: Objectively measured physical activity between older individuals and between populations has been poorly described. We aimed to describe and compare the variation in accelerometry data in older UK (EPIC-Norfolk) and American (NHANES) adults. Methods: Physical activity was measured by uniaxial accelerometry in 4,052 UK (49–91 years) and 3459 US older adults (49...


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

  • Published on Oct. 2015

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 ...


Accelerometer-Derived Pattern of Sedentary and Physical Activity Time in Persons with Mobility Disability: National Health and Nutrition Examination Survey 2003 to 2006

  • Published on July 14, 2015

Objectives: To describe objectively determined sedentary and activity outcomes (volume and pattern) and their associations with cardiometabolic risk biomarkers in individuals with and without mobility disability. Design: Cross-sectional Setting: Population based Participants: Community-dwelling older adults (≥60) living in the United States who were participants in the 2003 to 2004 or 2005 to 2006 National ...


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

  • Published on June 30, 2015

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 ...


Accelerometer determined sedentary behavior and dietary quality among US adults

  • Published on July 2, 2015

Objective: Scant evidence exists pertaining to objectively measured sedentary time and dietary quality among adults. Therefore, we examined the relationships between sedentary time, physical activity, and dietary quality. Methods: Cross-sectional analyses of a 4,910 US adults from two cycles (2003–2006) of the National Health and Nutrition Examination Survey. The primary independent ...