Introduction In order to obtain accurate estimates of sedentary time and physical activity in young children objective methods are needed. Wrist worn accelerometers have shown good feasibility among participants in previous studies. The acceleration signal collected by many commercially available activity monitors is usually summarized in an arbitrary unit (counts). ...
Introduction Technology advances and manufacturing efficiency improvements have drastically increased the options and flexibility available to users of accelerometer-based products. These advancements have led to confusion among activity monitor users, and many have been led to believe that device output normalization is an obvious and easy step. In truth, there ...
Introduction Pattern recognition classification algorithms have successfully identified energy cost and activity type from hip-worn accelerometers (ACC) [1,2]. These algorithms evaluate attributes of the acceleration signal during high frequency sampling. ACC output similarities and differences across activity types are well characterized [3]. An often overlooked area of potential difference lies in movement ...
Introduction Most accelerometry research is in children and adults. Literature on accelerometry in older adults is limited and many studies rely on validity studies completed on younger adults to determine cutpoints for exercise intensity. The purpose of this study was: to review the literature to identify studies that used ActiGraph ...
Introduction The interest in physical activity (PA) to prevent pediatric obesity has increased during the past decade. However, to start with obesity preventative efforts, adequate measurements of PA are needed. Although accelerometers have been put forward as an adequate method to assess preschoolers’ PA, survey measures of PA can be ...
Introduction The most popular accelerometers in physical activity research are the Actigraph uniaxial accelerometer (AGR, Model GT1M, Actigraph, Shalimar, CA) and the RT3 triaxial accelerometer (Stayhealthy Inc, Monrovia, CA). When a large population is evaluated at the same time, the use of several accelerometers is necessary. To be able ...
Introduction The aims of this study were to assess the quality of data on physical activity obtained by recall from British Pakistani women, and to explore the feasibility of using accelerometer-based physical activity monitors to provide more objective measure of physical activity in this group. Previously only questionnaire data have ...
Introduction Accurate measurement of canine physical activity (PA) is important in obesity treatment and prevention in veterinary medicine [1]. Methods of PA measurement often rely on owner recall and thus open to the same cognitive problems recognised in human PA measurement [1]. Accelerometry has been shown to be a valid, practical and ...
Introduction Sitting at work is an emerging occupational health risk [1]. Few instruments designed for use in population-based research measure occupational sitting and standing as distinct behaviours [2]. The aim of this study was to develop and validate a brief measure of occupational sitting and physical activity. Methods A convenience sample (N=99, 61% ...
Introduction It is important to understand the determinants of physical activity needed to influence policy and create environments that promote physical activity among preschool children. Physical activity levels were studied with the aims to compare outdoor and indoor activity and to analyze minutes spent in sedentary, light, moderate and vigorous ...