Optimal sleep duration (7-8h), moderate-to-vigorous intensity physical activity
(MVPA) and light-intensity activity are beneficially associated with cardiometabolic
outcomes and related biomarkers, while sedentary time and long (≥9h) or short (<7h)
sleep duration are detrimentally associated.
Purpose This study examined whether sleep duration modified the relationship
between both sedentary/...
The ActiGraphTM is the most commonly used research grade physical activity
monitor. However, the effect of the ‘low-frequency extension’ (LFE) on step counts in
a free-living environment has not been widely studied.
Purpose We sought to determine the accuracy of the ActiGraph’s LFE during freeliving
activities in two versions ...
Accelerometers-based activity monitors are commonly used to measure physical
activity energy expenditure (PAEE). Newly designed wrist and hip-worn triaxial
accelerometers claim to accurately predict PAEE across a wide range of activities.
Purpose To determine if the Nike FuelBand (NFB), Fitbit (FB) and ActiGraph
GT3X+ (AG) accurately estimate PAEE in ...
Assessing physical activity (PA) with wearable sensors in epidemiologic studies often requires initializing activity monitors at the study site and mailing them to participants. In these studies, it is important to discern true PA data from mail transit data. Typically, participants are asked to log the date and time they ...
The importance of regular physical activity for maintaining optimal health is well
documented. Accelerometer-based measures of activity have proven very useful
in recent years for quantifying activity behavior in a wide variety of populations,
including adults aged > 65 years. However, few studies have focused specifically on
activity patterns within a 24-hour ...
Purpose To describe the physical activity levels and sedentary behavior of toddlers from Ventura County, California
Methods Physical activity and sedentary behavior was measured in twenty three- (10 boys, 13 girls) toddlers (n= 22 toddlers, mean age 1.65 ± 0.49) using the Actigraph GT1M (Pensacola, Florida). GT1m’s were worn for a minimum of 6 ...
Sedentary behaviour (SB), which is characterized by the absence or low physical
movement (e.g. sitting or watching TV) and by low energy expenditure (≤1.5 METs),
has been associated with detrimental health effects, such as body fatness.
Purpose To examine the bi-directional associations between objective measures of
SB and moderate-to-vigorous physical ...
Physical activity can benefit the health of youth with Type 1 diabetes. Despite the
benefits some studies have found patients do not always meet the physical activity
recommendation of 60 minutes of moderate-to-vigorous physical activity (MVPA) per
day. Physical activity and sedentary behaviour have not been measured previously in
Scottish youth with ...
Results from several objective monitoring studies suggest that children’s physical
activity (PA) patterns may change across seasons; however, it is not well understood
how PA patterns in the childcare setting may change across seasons.
Purpose To prospectively track preschoolers’ PA patterns during childcare while
investigating for seasonal differences in ...
Clinically assessed gait speed is a valuable test of older adults’ functioning and an important predictor of adverse outcomes including disability, cognitive decline, falls, institutionalization, and mortality. It is logical to pursue correlates of gait speed.
Purpose To evaluate the relationship between accelerometer-determined indicators of free-living walking volume (steps/day, ...