Purpose: This study aims to establish evidence-based accelerometer data reduction criteria to accurately assess sedentary patterns in children. We not only examined total sedentary time, but also duration and number of breaks and uninterrupted sedentary bouts. Methods: Participants (n=1057 European children; aged 10-12 yrs) wore an ActiGraph accelerometer for at ...
Purpose: Different definitions for determining non-wear time are currently used. The aim of this study was to determine the effect of the definition of ActiGraph and activPAL non-wear time on data retention and the classification of sedentary and sitting time in children. Methods: Accelerometer and inclinometer data were drawn from ...
Purpose: Recently the importance of the pattern in which sedentary time is accumulated rather than total sedentary time has been established. To date, there is no consensus on the optimal definition of sedentary bouts and breaks in children. To build evidence for such definitions, we examined the association of various ...
Purpose: Use of accelerometers in research studies has increased over the past 25 years. The first accelerometer, the Caltrac, was worn on the waist and estimated physical activity EE (kcal). Subsequently, the emphasis shifted to measuring minutes of moderate-to-vigorous PA (MVPA) done in 10-min bouts. However, light PA and intermittent MVPA ...
Purpose: To evaluate the associations between physical activity, sedentary behavior and cognitive functions in children. Methods: 230 Finnish children (mean age 12.2 years; 56% girls) participated in the study. Self-reported moderate to vigorous physical activity (MVPA) and screen time were evaluated with the questions used in the “WHO Health Behavior in School-aged Children” ...
Purpose: Research on physical activity (PA) in people with heart disease tends to emphasize intrapersonal correlates while largely ignoring the potential importance of higher-level correlates within the social ecological model. Thus, the purpose of this study was to determine the relative importance of several social ecological correlates in predicting whether ...
Purpose Sedentary behaviour is known to have a detrimental effect on health. However, the manner in which is it accumulated may also be important. Therefore, we examined the association of daily sedentary time and breaks in sedentary time with various markers of cardio-metabolic risk. Methods Cross-sectional analysis using 725 participants from ...
Purpose To describe the patterns of sedentary behaviour (SB) across the day and explore relationships with body composition and fitness. Methods 249 children (mean age 8.8 yrs; 56% female) wore an ActiGraph GT1M accelerometer for 7 days, completed a 20m shuttle run fitness test and had triceps and subscapular skinfolds measured. SB was ...
Purpose To evaluate the influences of social and physical environmental factors within the home on preschoolers’ PA. Methods GT1M Actigraph data for 7 days were obtained in a random sample of 70 boys and 71 girls (5.4 years ± 0.3). Social (parental attitudes, knowledge, social support, rules) and physical environmental factors (play space, TV and ...
Purpose To examine the effects of short bouts of structured physical activity (PA) on during-school total PA in lower socioeconomic status preschoolers. Methods Ten preschool centers serving low-income families will be recruited and randomly assigned to one of two groups. Treatment preschools will implement the Tutti Fruitti Instant Recess intervention ...