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Limin Buchanan, Huilan Xu, Lyndel Hewitt, Sarah Taki, and Li Ming Wen

to health outcomes such as irritable sleep and decreased cognitive and psychosocial well-being among children. 4 Although it is recommended for toddlers (1–2 y old) to engage in at least 180 minutes of active playtime and no more than 1 hour screen time until they reach 2 years old, 7 evidence

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Lia Grego Muniz de Araújo, Bruna Camilo Turi, Bruna Locci, Camila Angélica Asahi Mesquita, Natália Bonicontro Fonsati, and Henrique Luiz Monteiro

outside the context of primary health care. Thus, the purpose of this study was to investigate the patterns of PA and screen time among children and adolescents aged 7–12 years, users of Brazilian National Health System (BNHS). Patients and Methods Sample and Sampling This cross-sectional study was

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Hugues Sampasa-Kanyinga and Jean-Philippe Chaput


Adolescents are recommended to achieve ≥ 60 min/day of moderate-to-vigorous physical activity (PA) and ≤2 h/day of screen time (ST). This study examined the relationships between the use of social networking sites (SNSs) and adherence to PA and ST recommendations in a large sample of Canadian adolescents.


This cross-sectional school-based survey included a representative sample of 9388 students in grades 7 to 12 across Ontario, Canada.


After adjustment for several confounding variables, results showed that male adolescents who use SNSs for fewer hours (≤ 1 h/day) had greater odds of adherence to PA and to both PA and ST recommendations concurrently, while those who use it for more hours (≥ 3 h/day) had lower odds of adherence to the ST recommendation. Female adolescents who use SNSs for more hours had lower odds of adherence to the ST recommendation (use of SNSs ≥ 2 h/day) and to both PA and ST recommendations concurrently (use of SNSs ≥ 5 h/day).


Heavy use of SNSs has a negative influence on the adherence to the ST recommendation in both males and females; however, infrequent use of SNSs was related to the adherence to the PA recommendation and concurrent adherence to both recommendations in males only.

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Pooja S. Tandon, Tyler Sasser, Erin S. Gonzalez, Kathryn B. Whitlock, Dimitri A. Christakis, and Mark A. Stein

impulsivity and distractibility 22 , 23 as well as numerous health-risk behaviors. 24 PA is found to improve EF including sustained attention and response inhibition in children with ADHD, which may benefit overall functioning and healthy behaviors. 25 Sedentary activities, such as screen time and sleep

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Meghan Schreck, Robert Althoff, Meike Bartels, Eco de Geus, Jeremy Sibold, Christine Giummo, David Rubin, and James Hudziak

Few studies have explored the relation between withdrawn behavior (WB) and exercise and screen time. The current study used exploratory factor analysis to examine the factor structure of leisure-time exercise behavior (LTEB) and screentime sedentary behavior (STSB) in a clinical sample of youth. Structural equation modeling was employed to investigate the relations between WB and LTEB and STSB, conditional on gender. WB was assessed using the Child Behavior Checklist, and LTEB and STSB were measured using the Vermont Health Behavior Questionnaire. LTEB and STSB emerged as two separate factors. Gender moderated the structure of STSB only. For boys and girls, WB was inversely related to LTEB but not significantly related to STSB. LTEB and STSB are best represented as distinct, uncorrelated constructs. In addition, withdrawn youth may be at risk for poor health outcomes due to lower rates of LTEB. Mental health clinicians, sports psychologists, and related providers may be uniquely qualified to enhance motivation for sports participation in withdrawn youth.

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Katherine L. Downing, Jo Salmon, Anna Timperio, Trina Hinkley, Dylan P. Cliff, Anthony D. Okely, and Kylie D. Hesketh

Sedentary behavior refers to activities undertaken in a sitting or lying position and requiring minimal energy expenditure, 1 for example, sitting down watching television (TV) or reading. There is increasing evidence that sedentary behavior, particularly sedentary screen time, is associated with

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Martin Camiré, Camille Sabourin, Eden Gladstone Martin, Laura Martin, and Nicolas Lowe

wake-up times; and (d) no more than 2 hr/day of recreational screen time ( Canadian Society for Exercise Physiology, 2021 ). However, in April 2020, Moore et al. ( 2020 ) surveyed a national sample of 1,472 Canadian parents of children (i.e., 5–11 years) and youth (i.e., 12–17 years) to assess changes

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Marcos Rescarolli, Francisco Timbó de Paiva Neto, Adalberto Aparecido dos Santos Lopes, Marcelo Dutra Della Justina, Anna Quialheiro Abreu da Silva, Eleonora d’Orsi, and Cassiano Ricardo Rech

Walk Score index and walking to commuting, moderate-to-vigorous leisure-time physical activity, and screen time in older adults from Florianópolis, Brazil. Methods Study Location and Design The present study is cross-sectional, population-based, and uses data from the third wave of the “EpiFloripa

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Roseane de Fátima Guimarães, Marie-Eve Mathieu, Ryan E.R. Reid, Mélanie Henderson, and Tracie Ann Barnett

Favorable lifestyle habits, such as regular physical activity (PA), limited screen time, and adequate sleep duration, are conducive to maintaining a healthier cardiometabolic profile. 1 Poor lifestyle habits may lead to the development of the metabolic syndrome, increasing the risk of

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Marcus Ngantcha, Eric Janssen, Emmanuelle Godeau, Virginie Ehlinger, Olivier Le-Nezet, François Beck, and Stanislas Spilka

recommendations are mostly disregarded. In the United States, school-aged children and adolescents spend around 7 hours per day in front of a screen. 4 In Norway, the average screen time (ST) use was 5.5 hours a day for girls and more than 6.5 hours for boys aged 16–19 years. 5 A study in Brazil showed that