Purpose Heart rate (HR) and motion sensors represent promising tools for physical activity (PA) assessment, as each provides an estimate of energy expenditure (EE). Although each has inherent limitations, the simultaneous use of HR and motion sensors may increase the accuracy of EE estimates. The primary purpose of this study ...
The purpose of the present study was to systematically review published evidence on the reproducibility, validity, and feasibility of motion sensors used to assess physical activity in healthy children and adolescents (2-18 yr). Method A systematic literature search was performed in October 2004 in PubMed, Embase, and SpycINFO. The clinimetric quality ...
Background Physical activity (PA) is relevant to the prevention and management of many health conditions in family practice. There is a need for an efficient, reliable, and valid assessment tool to identify patients in need of PA interventions. Methods Twenty-eight family physicians in three Australian cities assessed the PA of ...
Purpose To assess PA levels across trimesters of pregnancy using the actigraph. Methods 37 women (mean age = 29.9±7.5y) (trimester 1 (T1) n = 11. trimester 2 (T2) n = 14, trimester 3 (T3) n = 12) wore the MTI Actigraph for seven consecutive days. Time spent in moderate and vigorous activity (counts 1952) was classified by Freedson cut points. PA levels ...
Objective To determine the levels and patterns of daily physical activity in groups of normal-weight, overweight and obese adults using uniaxial minute-by-minute accelerometry. Design Cross-sectional study of physical activity levels over a 7 day period using accelerometers programmed to collect minute-by-minute data. Setting Participants were recruited from large companies in Bristol ...
Purpose The purpose of this study was to assess physical activity levels and patterns from children participating in the European Youth Heart Study (EYHS) Very limited physical activity data exist that have been collected from representative samples of children and even fewer data collected where physical activity has been measured ...
The purpose of this study was to determine the reliability of the Actigraph GT1M (Pensacola, FL, USA) accelerometer activity count and step functions. Fifty GT1M accelerometers were initialized to collect simultaneous acceleration counts and steps data using 15-sec epochs. All reliability testing was completed using a mechanical shaker ...
Background Questionnaires are feasible instruments to assess physical activity (PA) in large samples. The aim of the current study was to evaluate the reliability and validity of the PAQ-A questionnaire in Spanish adolescents using the measurement of PA by accelerometer as criterion. Methods In a sample of 82 adolescents, aged 12 to 17 ...
Measurement of physical activity in young children must be objective, since self or parental reports are not valid The advent of accelerometry has provided a practical and accurate means of objectively assessing engagement in habitual physical activity and inactivity (sedentary behavior) suitable even in young children. However; there is a ...
The complex nature of physical activity makes it difficult to accurately measure its aspects and assess the impact on outcome parameters like energy expenditure. Here, the focus was on the ability of different accelerometers to assess daily physical activity as compared with the doubly labeled water technique, which is considered ...