Purpose: Currently, there are no methods to distill information from the most widely used wrist-mounted accelerometer. A field-based calibration study was conducted in order to determine cut point thresholds for this wrist-mounted accelerometer in children aged 8-12 years. Methods: Forty-five children (25 developmental; 20 cross validation) aged 8-12 years, performed up to ...
Purpose: The purpose of this study was to develop and validate physical activity (PA) cut-points for wrist (WR) and ankle (AK) accelerometer placements in youth. Methods: : For cut-point development 84 girls and 97 boys (mean ± SD; age, 12.0 ± 1.5 yrs) completed 30 min of lying rest and two to seven structured activities (from a list ...
Introduction: The on-going Finnish Schools on the Move programme aims to make the school day more physically active. This study investigated how school-time physical activity changed in students from grades 1 to 9 in two academic years during the pilot phase of the programme. Methods: The data was collected in 2010-2012 during ...
Introduction: Cognitive function (CF) is responsible for mental and intellectual processes. The effects of physical activity (PA) on cognition are likely to be over brain structure and function. During childhood, nervous system structures are growing fast representing a crucial period for cognitive development. Purpose: Analyze both cross-sectional and longitudinal associations ...
Abstract: The Czech Republic lacks body composition (BC) and physical activity (PA) data for children. Therefore, the purpose of the study was to analyze BC and PA in sample of Czech children and to find a gender-specific association between these variables. In this study we analyzed data of 129 children (75 girls) ...
Purpose: Impact loading of bone is thought to be an important prevention for osteoporosis throughout life. The purpose of this study was to assess validity of accelerometers that provide raw acceleration signals with ground reaction force (GRF) for daily physical activities in children. Understanding error of these devices is a ...
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 (...
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 ...
Background: Moderate-to-vigorous physical activity (MVPA), and more recently, sedentary behaviour, have well recognised health consequences. However, academic sequelae are less well understood. Some educators assert that promoting MVPA and discouraging sedentary behaviours in schools is important to maximise academic outcomes. Aim: To examine associations between MVPA, sedentary behaviour and academic ...