Background: New technologies could facilitate changes in lifestyle and improve public health. However, no large randomized, controlled studies providing scientific evidence of the benefits of their use have been made. The aims of this study are to develop and validate a smartphone application, and to evaluate the effect of adding ...
Introduction: Activity-based monitors offer researchers a feasible, quantitative means for the assessing physical activity and sleep quality on a consistent and uniform basis. The purpose of this comparative study was to evaluate the reliability and feasibility of the Fitbit 4.10 activity based monitoring system to the standard actigraph GT3X+ in 42 ...
Background Epidemiological studies on physical activity often lack inexpensive, objective, valid, and reproducible tools for measuring physical activity levels of participants. Novel sensing technologies built into smartphones offer the potential to fill this gap. Objectives We sought to validate estimates of physical activity and determine the usability for large population-based ...
Abstract This study examines the association between objectively-measured physical activity (PA) intensities and sedentary behaviour (SED) in a cohort of 532 children aged 8-10 y. PA and SED were assessed by accelerometer over 7-days. Television and computer/video-game use were self-reported. Associations between PA intensities and SED variables were assessed by ...
Objective To determine the independent associations of moderate to vigorous physical activity (MVPA), fitness, screen time, and adiposity with insulin secretion in children. Design and Methods Caucasian youth (n = 423/630), 8-10 years old, with at least one obese biological parent, were studied (QUALITY cohort). Insulin secretion was measured using HOMA2-%...
Background Wireless technologies offer innovative and adaptive methods to intervene in real-time on health-related behaviors such as physical activity (PA). We have previously shown that a real-time intervention using KNOWME networks, a wireless body-area network with a mobile phone interface, was effective in increasing PA in Hispanic adolescents, a population ...
Understanding the determinants of physical activity behavior in children and youths is essential to the design and implementation of intervention studies to increase physical activity. Objective methods to assess physical activity behavior using various types of motion detectors have been recommended as an alternative to self-report for this population because ...
Purpose Recess and other school-based physical activity (PA) programs are important avenues for school children to participate in PA beyond physical education at school (NASPE, 2006). However, the quantification of the contributions of these programs, as compared with physical education, remains largely unexplored. This study was designed to compare young children’...
Purpose Self-reported physical activity (PA) has several challenges, including recall errors, social desirability, incomplete answers and misunderstanding of questionnaires. All of these affect PA estimates. To reduce recall errors, daily PA diaries have been used as a criterion for other types of PA questionnaires. The purposes of this study were ...
National surveys indicate less than half of college-age students meet physical activity (PA) guidelines (ACHA, 2009). Additionally, 65% of college students are active video game (AVG) players (Jones, 2003). AVGs incorporate PA into game play and could be used to increase PA. A key step in establishing their efficacy as an intervention tool ...