Purpose The purpose of this study was to determine the extent measured changes in total dietary fiber (FIB) per 1000 kcal were predictive of changes in body fat percentage (BF%) in 228 middle-aged women during a 20-month prospective study. Other objectives were to ascertain the extent differences in age, and various baseline ...
Background To date, nearly all research on physical activity and the built environment is based on self-reported physical activity arid perceived assessment of the built environment. Objective To assess how objectively measured levels of physical activity are related with objectively measured aspects of the physical environment around each participant’s ...
Purpose To examine the levels of PA in children and adolescents in relation to published recommendations. Methods total of 439 nine-year-olds (202 boys and 237 girls) and 364 fifteen-year-olds (156 boys and 208 girls) agreed to participate. Amount of PA was measured during four consecutive days (two weekdays and two weekend days) with an activity monitor (...
Background Atherosclerosis develops from early childhood; physical activity could positively affect this process. This study’s aim was to assess the associations of objectively measured physical activity with clustering of cardiovascular disease risk factors in children and derive guidelines on the basis of this analysis. Methods We did a cross-sectional ...
Objectives The Standards of Practice Committee of the American Sleep Disorders Association has supported the use of actigraphy in the assessment of sleep disorders. Pollak et al disagree. The objective of this paper is to identify and critically evaluate several theoretic and methodological issues that are central to these divergent ...
BACKGROUND Physical inactivity is a global concern, but diverse physical activity measures in use prevent international comparisons. The International Physical Activity Questionnaire (IPAQ) was developed as an instrument for cross-national monitoring of physical activity and inactivity. METHODS Between1997 and 1998, an International Consensus Group developed four long and four short forms ...
The authors examined the validity of the Computer Science and Application (CSA) activity monitor during a bout of rehabilitative exercise among older adults with chronic disease. In order to determine convergent validity, 50 participants were monitored during a 30-min walk in Study 1. In order to assess concurrent validity, 10 volunteers wore both ...
Four Computer Science and Applications (CSA, Model 7164) accelerometers were validated against speed and heart rate in a field trial, consisting of two walking and two preset running speeds, and 3 min of running at freely chosen speeds. Fifteen children (9–11 years) were recruited from a suburban school in Denmark. Mean CSA output ...
Background Changes in sedentary behavior may be related to changes in energy intake. Objective The purpose of this study was to investigate how experimental changes in the amount of sedentary behaviors influence energy intake. Design Sixteen non-overweight 12—16-yr-old youth were studied in a within-subject crossover design with three 3-wk phases: ...
The purpose of this study was to investigate the influence of physical activity on radius and tibia quantitative ultrasound measurements in peripubertal girls. Methods Participants were 174 peri-pubertal girls ages 9.2 to 13.1 yrs, divided into three groups according Tanner stage of puberty, namely, group II (age: 10.8+/-0.9 yrs; bone age: 10.5+/-1.1 yrs; ...