Objective To evaluate the theory of reasoned action (TRA) and planned behavior (TPB) In predicting moderate-to-vigorous physical activity (MVPA) in sixth-grade youth. Methods One hundred ninety-eight students completed a questionnaire measuring attitudes, subjective norms, perceived behavioral control, and intentions to be active. MVPA was measured using the CSA 7,164 accelerometer. Results ...
The purposes of this study were to assess the TRITRAC and CSA for: (a) interaccelerometer agreement; (b) agreement in detecting patterns of moderate-intensity physical activity; and (c) agreement in detecting walking patterns recorded in a diary. Thirty-one women wore both the TRITRAC and CSA accelerometers for three consecutive days. Interaccelerometer ...
Background To understand the mechanisms by which physical activity influences health and to target public health recommendations, it is important to determine factors correlated with activity. Methods We examined demographic and lifestyle factors in relation to questionnaire and accelerometer measured physical activity in 251 men and women aged 40 to 70 years in ...
Purpose To derive a regression equation that estimates metabolic equivalent (MET) from accelerometer counts, and to define thresholds of accelerometer counts that can be used to delineate sedentary, light, moderate, and vigorous activity in adolescent girls. Methods Seventy-four healthy 8th grade girls, age 13-14 yr, were recruited from urban areas ...
Purpose The purpose of this study is to describe and evaluate a method of defining the intensity of accumulated lifestyle PA bouts from CSA data based upon relative intensity from % heart rate reserve (%HRR) Methods CSA and %HRR data coflected simultaneously for 12 subjects (7 men, 5 women; 43 total bouts) were analyzed to ...
Objective The purpose of this study was to identify the psychosocial and environmental correlates of objectively measured physical activity behavior in a diverse sample of sixth-grade students. Design Cross-sectional. Participants and Settings One hundred ninety-eight sixth-grade students from 4 public middle schools in Columbia, South Carolina. The study group was 52.0% female, 55.1% ...
Participants, Methods, and Results We monitored physical activity during waking hours for seven days using accelerometers (Manufacturing Technology, Fort Walton Beach, FL) in 215 children (120 boys and 95 girls aged 7.0-10.5 (mean 9.0) years) from three schools with different sporting facilities and opportunity for physical education in the curriculum. School 1, a private preparatory ...
Purpose The primary purpose of this study was to compare the health-related physical times and physical activity behaviors of Old Order Mennonite children to both rural and. urban-dwelling children living a contemporary Canadian lifestyle. Methods A cross-sectional study design was used to compare the physical fitness and physical activity characteristics ...
Purpose To use objective monitoring of physical activity to determine the percentages of children and youth in a population that met physical activity guidelines. Methods A total of 375 students in grades 1–12 wore an accelerometer (CSA 7164) for seven consecutive days. Bouts of continuous activity and accumulation of minutes spent in physical ...
Purpose Accelerometry-based activity monitors offer promise for the assessment of free-living physical activity. They provide an objective record of frequency, intensity, and duration of physical activity with minimal burden on participants. The purpose of this study was to evaluate the absolute and relative validity of three contemporary activity monitors (Computer ...