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199 Results for: "Adolescents"

Validation of thigh-based accelerometer estimates of postural allocation in 5–12 year-olds

  • Published on Aug 12, 2016

Objectives: To validate activPAL3™ (AP3) for classifying postural allocation, estimating time spent in postures and examining the number of breaks in sedentary behaviour (SB) in 5–12 year-olds. Design: Laboratory-based validation study. Methods: Fifty-seven children completed 15 sedentary, light- and moderate-to-vigorous intensity activities. Direct observation (DO) was used as the criterion ...


Fitness and fatness in relation with attention capacity in European adolescents: The HELENA study

  • Added on February 7, 2017

Objectives: To examine the association of health-related physical fitness components and accurate measures of fatness with attention in European adolescents. Design: Cross-sectional study. Methods: A sub-sample of 444 adolescents from the HELENA study (14.5 ± 1.2 years) from 6 different countries participated in this study. Adolescents underwent evaluations of fitness (20 ...


MovingU: A prospective cohort study to understand behavioural and environmental contexts influencing physical activity during the transition into emerging adulthood

  • Published on Aug 5, 2016

Background: Children and youth are often considered the most active segment of the population, however, research indicates that physical activity (PA) tends to peak during the adolescent years, declining thereafter with age. In particular, the acute transition out of high school is a period for which individuals appear to be ...


National youth sedentary behavior and physical activity daily patterns using latent class analysis applied to accelerometry

  • Published on May 3, 2016

Background: Applying latent class analysis (LCA) to accelerometry can help elucidated underlying patterns. This study described the patterns of accelerometer-determined sedentary behavior and physical activity among youth by applying LCA to a nationally representative United States (US) sample. Methods: Using 2003–2006 National Health and Nutrition Examination Survey data, 3998 youths 6–17 ...


‘Physical Activity 4 Everyone’ school-based intervention to prevent decline in adolescent physical activity levels: 12 month (mid-intervention) report on a cluster randomised trial

  • Published on Sept. 10, 2015

Background: Adolescence is a recognised period of physical activity decline, particularly among low-income communities. We report the 12-month (midpoint) effects of a 2-year multicomponent physical activity intervention implemented in disadvantaged secondary schools. Methods: A cluster randomised trial was undertaken in 10 secondary schools located in disadvantaged areas in New South Wales, ...


Validity of a two-item physical activity questionnaire for assessing attainment of physical activity guidelines in youth

  • Published on Oct. 23, 2015

Background: As physical activity is important for health and well-being, it is essential to monitor population prevalence of physical activity. Surveillance is dependent on the use of valid and reliable measurement tools. The PACE+ questionnaire is used globally in youth and has acceptable reliability; however it has not been validated ...


Physical Activity Is Associated with Attention Capacity in Adolescents

  • Published on Jan. 2016

Objective: To assess the relationships among physical activity, measured objectively, and attention capacity in European adolescents. Study design: The study included 273 adolescents, aged 12.5-17.5 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence Study. Participants wore a uniaxial accelerometer for 7 days to measure physical activity. The ...


Dog walking among adolescents: Correlates and contribution to physical activity

  • Published on Nov. 19, 2015

Purpose: To assess the association of dog walking with adolescents' moderate-to-vigorous physical activity (MVPA) and body mass index (BMI), and identify correlates of dog walking. Methods/design: Participants were 12–17 year-olds (n = 925) from the Baltimore, MD and Seattle, WA regions. Differences in accelerometer-assessed minutes/day of MVPA and self-reported BMI (...


Locations of physical activity as assessed by GPS in young adolescents

  • Published on Jan. 2016

Objectives: To compare adolescents’ physical activity at home, near home, at school, near school, and at other locations. Methods: Adolescents (N = 549) were ages 12 to 16 years (49.9% girls, 31.3% nonwhite or Hispanic) from 447 census block groups in 2 US regions. Accelerometers and Global Positioning System devices assessed minutes of and proportion of time spent ...


Effect and cost of an after-school dance programme on the physical activity of 11–12 year old girls: The Bristol Girls Dance Project, a school-based cluster randomised controlled trial

  • Published on Oct. 6, 2015

Background: The aim of this study was to examine the effectiveness and cost of an after-school dance intervention at increasing the physical activity levels of Year 7 girls (age 11–12). Methods: A cluster randomised controlled trial was conducted in 18 secondary schools. Participants were Year 7 girls attending a study school. The Bristol ...