Background: The steep decline in physical activity (PA) among the oldest old is not well understood; there is little information about the patterns of change in PA and sedentary behaviour (SB) in older people. Longitudinal data on objectively measured PA data can give insights about how PA and sedentary behaviour (...
Background: The steep decline in physical activity (PA) among the oldest old is not well understood. Longitudinal objective PA data can give insights about how amount and bouts of PA and sedentary behaviour (SB) change with age. Methods: Men aged 70-90 years, from a UK population-based cohort wore GT3x ...
Abstract: The objective of this study was to estimate physical activity levels of schoolchildren during physical education classes. Thirty classes between second and fifth grades were selected from Florianópolis’ public schools, of which 13 (n=260, 50.4% boys) had attended to physical education classes. Actigraph® GT3X+ physical monitors were used to ...
Abstract: The aim of the present study was to evaluate the one-year stability of objectively-measured physical activity (PA) among individuals aged 18 to 35 years. We recruited 16 volunteers (8 men) and measured their activity levels every month from October 2012 to September 2013. GT3x+ Actigraph accelerometers were used; the epoch was set at 5 seconds. ...
Aim: The aim of this study was to assess time trends in objectively assessed physical activity in a population based sample of children and adolescents living in Norway. Methods: The sample population (n=4766) consists of two independent samples of 9- and 15-year-old children recruited within the PANCS project in 2005-06 ...
Background: Physical activity and sedentary behaviour of South African preschool children has not been previously assessed, nor has the impact of socioeconomic status on these behaviours. Methods: Physical activity was measured objectively using Actigraph GT3X+ accelerometers on children 3-6 years old, including children from low income (n=87) and high-income (...
Objective: The correction to the prevalence of the physical inactive in a 2009-10 Chilean National Health Survey (NHS) through the use of accelerometers. Methods: Population older than 15 years old were recruited from different educational levels of the urban area of Santiago-Chile, who had answered the GPAQ ítem during 2009-10 NHS. ...
Purpose: There is considerable debate about the possibility of physical activity compensation. This study examined whether increased levels in physical activity and/or sedentary behaviour on one day were predictive of lower levels in these behaviours the following day (compensatory mechanisms) among children. Methods: Two hundred and forty-eight children (121 boys, 127 ...
Purpose: The study aims were to compare raw tri-axial accelerometer output from ActiGraph GT3X + (AG) and GENEActiv (GA) placed on the hip and the wrist and to develop regression equations for estimating energy expenditure. Methods: Thirty children (7-11 yr.) and 30 adults (18-65 yr.) completed eight activities (ranging from lying ...
Introduction: Activity-based monitors offer researchers a feasible, quantitative means for the assessing physical activity and sleep quality on a consistent and uniform basis. The purpose of this comparative study was to evaluate the reliability and feasibility of the Fitbit 4.10 activity based monitoring system to the standard actigraph GT3X+ in 42 ...