Research analyzing the influence of physical activity (PA) on skeletal have been focused on bone material properties such as bone mass and few studies were conducted on bone morphologic properties. Purpose To analyze the influence of PA on morphologic variation of proximal femur in pre-pubertal boys, probably the most active ...
Children's independent mobility has fallen in recent years and may in part explain reported declines in physical activity in young people. This cross-sectional study investigated whether independent mobility in boys and girls was related to objectively measured physical activity. Methods Thirteen hundred and seven 10-11 year old boys and girls ...
The primary aim of this intervention was to determine if a bi-weekly behavioral intervention, including energy expenditure feedback collected from an accelerometer, would increase the exercise/physical activity energy expenditure of cardiac rehabilitation program (CRP) patients, particularly on days that they do not attend CRP. Our secondary aim was to ...
Background A relatively high percentage of energy intake as protein has been shown to increase satiety and decrease energy efficiency during overfeeding. Aim To investigate whether addition of protein may improve weight maintenance by preventing or limiting weight regain after weight loss of 5–10% in moderately obese subjects. Design or the ...
Purpose To validate two accelerometer-based activity monitors as measures of children's physical activity using energy expenditure as the criterion measure. Methods Actiwatch (AW) and Actical (AC) activity monitors were validated against continuous 4-h measurements of energy expenditure (EE) in a respiratory room calorimeter and 1-h measurements in an exercise laboratory ...
This study examines energy expenditure and physical activity levels for a sample of 40 adolescent girls of the Sereer ethnic group of rural Senegal. The girls were 13.3 +/- 0.5 years at the start of the study (June 1997) and were followed annually for the next 2 years during puberty. Data collected during each round ...
Objective To objectively measure habitual physical activity and sedentary behaviour in a clinical sample of obese children and to compare with age- and sex-matched non-obese controls. DESIGN: Pairwise comparison of obese children matched for age and gender with non-obese controls. Subjects A total of 116 obese children (body mass index (BMI)> ...
Purpose To test for relationships between objectively measured habitual physical activity and fundamental movement skills in a relatively large and representative sample of preschool children. Methods Physical activity was measured over 6 d using the Computer Science and Applications (CSA) accelerometer in 394 boys and girls (mean age 4.2, SD 0.5 yr). Children were ...
Purpose The purpose of this study was to evaluate the Computer Science and Applications, Inc. (CSA) activity monitor to quantify physical activity in free living subjects using an activity diary as the criterion measure. Methods Subjects also completed a 7-d physical activity recall at the end of the monitoring period. ...
Purpose To examine certain physiological parameters during officiating selected National Football League (NFL) games. Methods Data were collected during four preseason NFL games. During each game1 a i-person crew was monitored on the following physiological parameters: heart tale activity (using Polar S610i Heart Rate Monitor), activity level, caloric expenditure, ...