Research Database

350 results for "Activity and Environment"


The Relationship Between Outdoor Activity and Health in Older Adults

  • Added on June 14, 2012

Background Humans have an innate connection and attraction to nature, often referred to as ‘biophilia.’ Exposure to nature has been reported to have a positive impact on health, and several studies have documented that engaging in physical activity outdoors improves mental health and well being. Exact mechanisms remain unknown but ...


Park Use and Corresponding Physical Activity Among Adolescent Girls

  • Added on June 14, 2012

Background Due to concern about United States (US) levels of physical activity among youth, in 2009 the American Academy of Pediatrics released a policy statement promoting environments and policies favoring physical activity, such as consideration of easier access to parks and open space. Parks provide free or low cost public space ...


Kcal Estimates from Activity Counts using the Potential Energy Method

  • Published on 01/01/1998

A problem exists in applying the kinetic energy equation KE mv2 to estimates of energy expenditure based on activity counts over long epochs. The instantaneous velocity should be obtained over short time periods (on the order of 0.1 second) and squared to obtain the instantaneous kinetic energy. The instantaneous KE is ...


The Contribution of School Breaks to the All-day Physical Activity of 9- and 10-year-old Overweight and Non-overweight Children

  • Published on August 2012

Objectives This study examines whether moderate-to-vigorous physical activity (MVPA), in at least 30-min school breaks (SB), helps to achieve the health-related amount of daily physical activity (PA) and whether these exercises influence after-school PA. Methods The ActiTrainer-based PA was monitored over two school days in 239 children aged from 9 to 10 (57.3% female; 20.1% ...




Schoolyard Physical Activity on 6 Schools in Denmark – Using GPS, Accelerometry and GIS

  • Added on March 13, 2012

Background Schools provide a unique setting for the promotion of physical activity (PA) in children through structured physical education, recesses, extracurricular sports and promotion of community activities. Because recesses may contribute up to 40% of moderate/vigorous activity, approaches that increase activity during recess are of interest. A number of recent ...



Modeling Physical Activity Outcomes From Wearable Monitors

  • Added on January 23, 2012

Although the measurement of physical activity with wearable monitors may be considered objective, consensus guidelines for collecting and processing these objective data are lacking. This article presents an algorithm embodying best practice recommendations for collecting, processing, and reporting physical activity data routinely collected with accelerometry-based activity monitors. This algorithm is ...