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 ...
Background: There is little consensus on how many hours of accelerometer wear time is needed to reflect a usual day. This study identifies the bias in daily physical activity (PA) estimates caused by accelerometer wear time. Methods: 124 adults (age = 41 ± 11 years; BMI = 27 ± 7 kg/m-2) contributed approximately 1,200 days accelerometer wear time. Five 40 ...
Background: Increases in physical activity (PA) are promoted by walking in an outdoor environment. Along with walking speed, slope is a major determinant of exercise intensity, and energy expenditure. The hypothesis was that in free-living conditions, a hilly environment diminishes PA to a greater extent in obese (OB) when compared ...
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, ...
In recent years, the risks associated with sedentary behavior (i.e. obesity, Type II diabetes) have become more recognized. Knowledge of the time-of-day when individuals are most sedentary may be beneficial when designing program interventions to promote and increase physical activity. Purpose To examine time-of-day patterns of sedentary behavior in ...