Research Database

61 results for "Activity and Technology"

Using Web 2.0 applications to promote health-related physical activity: findings from the WALK 2.0 randomised controlled trial

  • Published on Oct 2017

Background/Aim: Web 2.0 internet technology has great potential in promoting physical activity. This trial investigated the effectiveness of a Web 2.0-based intervention on physical activity behaviour, and the impact on website usage and engagement. Methods: 504 (328 women, 126 men) insufficiently active adult participants were randomly allocated to one of two web-based interventions ...


Increases in Use and Activity Due to Urban Renewal: Effect of a Natural Experiment.

  • Published on Sep 2017

Introduction: Urban green space and other recreational facilities are associated with physical activity. For adolescents living in multistory housing, public outdoor spaces that support physical activity may play an important role in activity promotion strategies. However, stronger evidence for a relation between the built environment and adolescent physical activity is ...


Youth Oriented Activity Trackers: Comprehensive Laboratory- and Field-Based Validation

  • Published on Jul 19, 2017

Background: Commercial activity trackers are growing in popularity among adults and some are beginning to be marketed to children. There is, however, a paucity of independent research examining the validity of these devices to detect physical activity of different intensity levels. Objectives: The purpose of this study was to determine ...



Comparison of two accelerometers for measuring physical activity and sedentary behaviour

  • Published on May 12, 2017

Purpose: A central aspect of physical activity and sedentary behaviour research is accurate exposure assessment in the context of disease outcomes. The primary objectives of this study were to evaluate the convergent validity and test-retest reliability of the ActiGraph GT3X+ and activPAL3 accelerometers. Methods: Participants from the Breast Cancer ...


Validity of treadmill- and track-based individual calibration methods for estimating free-living walking speed and VO2 using the Actigraph accelerometer

  • Published on Nov 25, 2015

Background: For many patients clinical prescription of walking will be beneficial to health and accelerometers can be used to monitor their walking intensity, frequency and duration over many days. Walking intensity should include establishment of individual specific accelerometer count, walking speed and energy expenditure (VO2) relationships and this can be ...



Accelerometer-measured dose-response for physical activity, sedentary time, and mortality in US adults

  • Published on Oct 5, 2016

Background: Moderate-to-vigorous–intensity physical activity is recommended to maintain and improve health, but the mortality benefits of light activity and risk for sedentary time remain uncertain. Objectives: Using accelerometer-based measures, we 1) described the mortality dose-response for sedentary time and light- and moderate-to-vigorous–intensity activity using restricted cubic splines, and 2) estimated ...


Step-Based Physical Activity Metrics and Cardiometabolic Risk: NHANES 2005–2006

  • Published on Feb 2017

Purpose: This study aimed to catalog the relationships between step-based accelerometer metrics indicative of physical activity volume (steps per day, adjusted to a pedometer scale), intensity (mean steps per minute from the highest, not necessarily consecutive, minutes in a day; peak 30-min cadence), and sedentary behavior (percent time at zero ...


EASY – An Instrument for Surveillance of Physical Activity in Youth

  • Published on Jun 21, 2017

There is a need for a self-report instrument, with sound psychometric properties, for monitoring compliance with physical activity guidelines in youth. This study aimed to develop such an instrument by applying Item Response Theory as well as traditional methods for assessing validity and reliability. Focus groups, conducted with 162 middle school ...