Research Database


Measurement of Active and Sedentary Behavior in Context of Large Epidemiologic Studies

  • Published on Feb 2018

Introduction/Purpose: To assess the utility of measurement methods that may be more accurate and precise than traditional questionnaire-based estimates of habitual physical activity and sedentary behavior we compared the measurement properties of a past year questionnaire (AARP) and more comprehensive measures: an internet-based 24-h recall (ACT24), and a variety ...


Association between physical activity in daily life and pulmonary function in adult smokers

  • Published on Apr 2016

Objective: To determine whether the level of physical activity in daily life (PADL) is associated with pulmonary function in adult smokers. Methods: We selected 62 adult smokers from among the participants of an epidemiological study conducted in the city of Santos, Brazil. The subjects underwent forced spirometry for pulmonary function assessment. ...



Screening for physical inactivity among adults: the value of distance walked in the six-minute walk test. A cross-sectional diagnostic study

  • Published on 2016

Context and Objectives: Accelerometry provides objective measurement of physical activity levels, but is unfeasible in clinical practice. Thus, we aimed to identify physical fitness tests capable of predicting physical inactivity among adults. Design and Setting: Diagnostic test study developed at a university laboratory and a diagnostic clinic. Methods: 188 asymptomatic subjects ...


High sedentary behavior and compromised physical capabilities in adult smokers despite the suitable level of physical activity in daily life

  • Published on Jan/Feb 2017

Abstract: Sedentary behavior may play an important role for health outcomes, regardless of the amount of physical activity in daily life (PADL).We aimed to evaluate and compare sedentary behavior as well as physical capabilities in physically active smokers and non-smokers. Twenty-eight adult smokers and 38 non-smokers free of lung disease ...


Accelerometer-based physical activity in daily life is not positively associated with better pulmonary function in adult smokers without airflow obstruction

  • Published on May 2015

Background: Epidemiological studies suggest that an appropriate level of physical activity in daily life (PADL) may reduce the rate of decline in pulmonary function regardless of smoking. However, studies evaluating this relationship were based on physical activity questionnaires, which have limitations in accurately quantifying the amount and intensity of PADL. ...


Moderate intensity physical activity associates with CSF biomarkers in a cohort at risk for Alzheimer’s disease

  • Published on Feb 6, 2018

Introduction: Alzheimer's disease (AD) is characterized by the presence of amyloid β (Aβ) plaques, neurofibrillary tangles, and neurodegeneration, evidence of which may be detected in vivo via cerebrospinal fluid (CSF) sampling. Physical activity (PA) has emerged as a possible modifier of these AD-related pathological changes. Consequently, the aim of this study ...


The Impact of Low Accelerometer Wear Time on the Estimates and Application of Sedentary Behavior and Physical Activity Data in Adults

  • Published on Dec 1, 2017

Background: This investigation sought to determine how accelerometer wear (1) biased estimates of sedentary behavior (SB) and physical activity (PA), (2) affected misclassifications for meeting the Physical Activity Guidelines for Americans, and (3) impacted the results of regression models examining the association between moderate to vigorous physical activity (MVPA) and a clinically relevant ...


Sedentary and Physical Activity Patterns in Adults with Intellectual Disability.

  • Published on Sep 7, 2017

Little is known about the patterns of sedentary time (ST) and physical activity (PA) levels throughout the week among adults and older adults with Intellectual Disability (ID). We analyzed ST and PA patterns of adults and older adults with ID. Forty-two adults and 42 older adults with mild to severe ID ...