Accelerometers have the advantage of providing objective measures of both physical activity performed at various intensities and of sedentary time. ActiGraph accelerometers are widely used, however with technological advancements new models are periodically released. The GT3X is the most recent model. Although research has shown previous ActiGraph models to ...
Purpose To examine the accuracy of three measurement devices (ActiGraph GT3x+, ActivPAL, and Sensewear Armband) in assessing sedentary behavior and light-intensity physical activity (PA) against a referent measure of oxygen uptake (Oxycon Mobile). Methods 16 adults (8 males, 8 females) wore the four measurement devices while performing 7 activities (walking at 1.0 mph, 1.5 mph, 2.0 ...
The International Physical Activity Questionnaire (IPAQ) is one of the most widely used questionnaires to assess physical activity (PA). Validation studies for the IPAQ have been executed, but still there is a need for studies comparing absolute values between IPAQ and accelerometer in large population studies. Purpose: To compare PA ...
Purpose The purpose of this study was to examine the use of the ActivPAL (AP) and ActiGraph GT3X (AG) for estimating SB during structured and free-living physical activity (PA) in youth. Methods Twenty-nine boys and 23 girls (mean±SD; age, 12±0.9 yrs; BMI 23.3±5.8 kg.m-2) performed up to 8 structured activities and ...
Purpose The purpose of this study was to compare physical activity (PA) and sedentary time (ST) in children that reside within city limits (WCL) and those that live outside city limits (OCL) in a rural environment. Methods Physical activity and ST were assessed for 7 days via accelerometers (ActiGraph GT3X+) ...
Active video games or “exergames” (EG) may provide an effective method by which to increase physical activity (PA) levels of sedentary individuals although the energy cost is less than the real version of the sport or activities. However, if already active individuals increased their usage of EG, a resultant displacement ...
Background: The afterschool period holds promise for the promotion of physical activity, yet little is known about the importance of this period as children age. Purpose: To examine changes in physical activity of children aged 5–6 years and 10–12 years and their sedentary time in the afterschool period over 3 and 5 years, and ...
Accelerometers are gaining popularity as an objective measure of sedentary behaviour. Limited evidence exists however on the validity of different cut points used to define sedentary time, or on the inclinometer function seen in newer models of the ActiGraph accelerometer. Purpose: To determine the concurrent validity of the ActiGraph GT3...
PURPOSE: To determine the relationships between objectively measured and self-reported physical activity, sedentary behavior, and academic performance in Finnish children. METHODS: Two hundred seventy-seven children from five schools in the Jyvaskyla school district in Finland (58% of the 475 eligible students; mean age 12.2 years; 56% girls) participated in the study in the spring ...
Purpose. To examine the accuracy of intensity and inclinometer output of three physical activity monitors during various sedentary and light-intensity activities. Methods. Thirty-six participants wore three physical activity monitors (ActiGraph GT1M, ActiGraph GT3X+, and StepWatch) while completing sedentary (lying, sitting watching television, sitting using computer, and standing still) ...