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Best practice in mass reach physical activity campaigns includes a role for communities to support the initiative with sustained programs and shorter-term events. The purpose of this paper was to report on an outcome evaluation of ParticipACTION's 150 Play List, a population-level, year-long, national mass reach campaign that included community events. Participants (N = 1,185) were recruited in the last month of the program to complete a questionnaire measuring demographic information, leisure-time physical activity, campaign awareness, attitudes, intentions, and behavioral trialing. Data were also collected, measured using cell phone proximity, on the number of people who attended 150 Play List events, which ranged from large-scale (e.g. national sports events) to smaller community events. Approximately 43% of respondents were aware of the 150 Play List and 19.5% reported participating in some way (e.g. visiting the website). Almost half of the participants who were aware of the campaign reported increased sport or physical activity-related intentions. Among those who participated, 90.6% reported trying at least one physical activity or sport related behavior as a result of the 150 Play List, whereas only 27.5% (n = 75) of those who were aware but did not participate in the 150 Play List tried a behavior. Event attendance goals were mostly met or exceeded. The 150 Play List was valued by those aware of it and the campaign was related to interest in sport and physical activity in Canada. The community events had potential to augment campaign effects but adequate evaluation requires sufficient resources. [ABSTRACT FROM AUTHOR]

Summary: Background: It is unknown whether moderate‐to‐vigorous physical activity (MVPA) thresholds for obesity should be adapted depending on level of sedentary behaviour in children. Objective: The objective of the study is to determine the MVPA thresholds that best discriminate between obese and non‐obese children, by level of screen time and total sedentary time in 12 countries. Methods: This multinational, cross‐sectional study included 6522 children 9–11 years of age. MVPA and sedentary time were assessed using waist‐worn accelerometry, while screen time was self‐reported. Obesity was defined according to the World Health Organization reference data. Results: Receiver operating characteristic curve analyses showed that the best thresholds of MVPA to predict obesity ranged from 53.8 to 73.9 min d−1 in boys and from 41.7 to 58.7 min d−1 in girls, depending on the level of screen time. The MVPA cut‐offs to predict obesity ranged from 37.9 to 75.9 min d−1 in boys and from 32.5 to 62.7 min d−1 in girls, depending on the level of sedentary behaviour. The areas under the curve ranged from 0.57 to 0.73 (‘fail’ to ‘fair’ accuracy), and most sensitivity and specificity values were below 85%, similar to MVPA alone. Country‐specific analyses provided similar findings. Conclusions: The addition of sedentary behaviour levels to MVPA did not result in a better predictive ability to classify children as obese/non‐obese compared with MVPA alone. [ABSTRACT FROM AUTHOR]

Objective The objective of this study was to systematically review evidence to identify intrapersonal, social environmental, physical environmental and policy correlates of sedentary behaviour (SB) among adults. Methods Six databases were searched to identify studies that reported on intrapersonal, social, physical environmental and/or policy correlates of SB across domains (i.e. occupational, leisure and transportation) in adults (mean ≥ 18 years old). Subgroup differences (sex, age, disease status, publication status and date, weekdays vs. weekend) were examined. Risk of bias was assessed, and a qualitative synthesis completed. PROSPERO: CRD42014009814 Results Searching identified 22,779 articles; 257 were used in the analysis. Most studies used self-reported SB and were cross-sectional. The most studied domain of SB and correlate was leisure and intrapersonal, respectively. Consistent evidence found positive relationships between full-time employment and higher transportation and lower leisure SB; higher income/socioeconomic status and greater transportation and occupation SB; living in more urban areas and greater sitting time and total SB; ownership of televisions and greater leisure SB; and, active workstations and lower occupational SB. Conclusions The review identifies the need for longitudinal studies, as well as further research on factors in the physical, social and policy environments. The review also recognizes the need to standardize methodology for collecting, defining and reporting SB and correlates. [ABSTRACT FROM AUTHOR]

Accelerometry is the gold standard for field-based physical activity assessment in children; however, the plethora of devices, data reduction procedures, and cut-points available limits comparability between studies. This study aimed to compare physical activity variables from the ActiGraph GT3X+ and Actical accelerometers in children under free-living conditions. A cross-sectional study of 379 children aged 9–11 years from Ottawa (Canada) was conducted. Children wore the ActiGraph GT3X+ and Actical accelerometers on the hip simultaneously for 7 consecutive days (24-h protocol). Moderate-to-vigorous (MVPA), vigorous (VPA), moderate (MPA), and light (LPA) physical activity, as well as sedentary time, (SED) were derived using established data reduction protocols. Excellent agreement between devices was observed for MVPA (ICC = 0.73–0.80), with fair to good agreement for MPA, LPA and SED, and poor agreement for VPA. Bland-Altman plots showed excellent agreement for MVPA, LPA, and SED, adequate agreement for MPA, and poor agreement for VPA. MVPA derived from the Actical was 11.7% lower than the ActiGraph GT3X+. The ActiGraph GT3X+ and Actical are comparable for measuring children’s MVPA. However, comparison between devices for VPA, MPA, LPA, and SED are highly dependent on data reduction procedures and cut-points, and should be interpreted with caution. [ABSTRACT FROM PUBLISHER]

Background: Various changes in society have created the opportunity for more sedentary behaviour and the consumption of food that is high in kilojoules, which may lead to a progressive increase in body mass over time. The purpose of this study was to examine secular changes in the body mass index (BMI) of Canadian children between 1981 and 1996.Methods: Nationally representative data from the 1981 Canada Fitness Survey, the 1988 Campbell's Survey on the Well-being of Canadians and the 1996 National Longitudinal Survey of Children and Youth were used in the analysis. Regression analyses were used to assess population changes in BMI from 1981 to 1996 for children aged 7-13 years. Changes in the distribution of BMI results were evaluated by plotting the residuals from regression analyses of BMI on age, assessed separately by sex, using the 1981 data as baseline. The proportions of children exceeding the 85th and 95th age- and sex-specific percentiles from the 1981 (baseline) data were also calculated.Results: Since 1981, BMI has increased at the rate of nearly 0.1 kg/m2 per year for both sexes at most ages, indicating a clear secular trend toward an increase in BMI of Canadian children. The prevalence of overweight among boys increased from 15% in 1981 to 28.8% in 1996 and among girls from 15% to 23.6%. The prevalence of obesity in children more than doubled over that period, from 5% to 13.5% for boys and 11.8% for girls.Interpretation: Secular trends indicate that Canadian children aged 7-13 years are becoming progressively overweight and obese. [ABSTRACT FROM AUTHOR]

Objectives To examine whether meeting vs not meeting movement/non-movement guidelines (moderate-to-vigorous physical activity [MVPA], screen time, sleep duration), and combinations of these recommendations, are associated with health-related quality of life (HRQoL) in children from 12 countries in five major geographic regions of the world and explore whether the associations vary by study site. Study design Observational, multinational cross-sectional study. Methods This study included 6106 children aged 9-11 years from sites in Australia, Brazil, Canada, China, Colombia, Finland, India, Kenya, Portugal, South Africa, the United Kingdom, and the United States. Participants completed the KIDSCREEN-10 to provide a global measure of their HRQoL. Sleep duration and MVPA were assessed using 24-h accelerometry. Screen time was assessed through self-report. Meeting the recommendations was defined as =60 min/day for MVPA, =2 h/day for screen time, and between 9 and 11 h/night for sleep duration. Age, sex, highest parental education, unhealthy diet pattern score, and body mass index z-score were included as covariates in statistical models. Results In the full sample, children meeting the screen time recommendation, the screen time + sleep recommendation, and all three recommendations had significantly better HRQoL than children not meeting any of these guidelines. Differences in HRQoL scores between sites were also found within combinations of movement/non-movement behaviors. For example, while children in Australia, Canada, and USA self-reported better HRQoL when meeting all three recommendations, children in Kenya and Portugal reported significantly lower HRQoL when meeting all three recommendations (relative to not meeting any). Conclusions Self-reported HRQoL is generally higher when children meet established movement/non-movement recommendations. However, differences between study sites also suggest that interventions aimed at improving lifestyle behaviors and HRQoL should be locally and culturally adapted. [ABSTRACT FROM AUTHOR]