Research Database

405 results for "Presented At"


The impact of missing Global Positioning System (GPS) signal data on relationships between environmental variables and objectively measured physical activity and sedentary behavior

  • Presented on May 21, 2014

Purpose: Explore environment-related patterns of GPS signal-loss, levels of objectively measured physical activity (PA) during periods of GPS signal loss, and the effect of missing GPS data on relationships between environmental variables, PA and sedentary behavior. Methods: Eight free-living studies using GPS and accelerometer devices were pooled, representing a range ...



Go out and play: Children’s outdoor time and context-specific physical activity by gender

  • Presented on May 21, 2014

Purpose: Being outdoors is as a correlate for enhanced physical activity (PA), but the association has seldom been investigated using objective measures. This paper investigates the association between week day outdoor time and context-specific moderate to vigorous PA (MVPA) by gender. Methods: Children (n=170, 11-16 years old) from the When ...



The potential cardio-metabolic benefits of replacing time in less-for more-active behaviors in adults with type 2 diabetes

  • Presented on May 21, 2014

Purpose: To examine the cross-sectional associations of objectively derived physical activity and sedentary time with cardiometabolic biomarkers, including the potential collective impact of shifting time use from less towards more active behaviors. Methods: Overweight/obese and/or physically inactive adults with type 2 diabetes (n=294; mean age = 58.0 [SD 8.5] years) wore Actigraph ...


The independent prospective associations of sedentary time, moderate and vigorous physical activity with adiposity in young adolescents

  • Presented on May 21, 2014

Purpose: To assess the associations between 1) baseline objectively-measured activity intensity (sedentary (SED), moderate (MPA) or vigorous (VPA) activity) and 4-year change in adiposity, and between 2) 4-year change in activity intensity and adiposity at follow-up. Methods: Analyses of longitudinal data from the SPEEDY study, including all participants with valid data at ...


Neighborhood and home environments and GPS-derived location-specific physical activity in adolescents

  • Presented on May 21, 2014

Purpose: To compare relations of neighborhood walkability and home equipment to (1) total and (2) location-specific physical activity. Methods: 290 adolescents (M age=14.1±1.4 years; 45% girls; 74.7% White non-Hispanic) wore GPS and accelerometers for 5.4±1.9 days set to record at 30-second epochs. GIS was used to calculate a walkability index (sum of z-scores for density, mixed-use, ...


Rainfall and physical activity; what happens as children age?

  • Presented on May 21, 2014

Purpose: Weather conditions, along with day length, are proposed as the main drivers of the seasonal patterns in children’s physical activity (PA). This study examines the relationship between rainfall and PA among 9-10 year old children in Norfolk, UK, and how this changes as they age. Methods: Participants were 283 ...