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Alexandra Valencia-Peris, José Devís-Devís, Xavier García-Massó, Jorge Lizandra, Esther Pérez-Gimeno and Carmen Peiró-Velert

Background:

Previous research shows contradictory findings on potential competing effects between sedentary screen media usage (SMU) and physical activity (PA). This study examined these effects on adolescent girls via self-organizing maps analysis focusing on 3 target profiles.

Methods:

A sample of 1,516 girls aged 12 to 18 years self-reported daily time engagement in PA (moderate and vigorous intensity) and in screen media activities (TV/video/DVD, computer, and videogames), separately and combined.

Results:

Topological interrelationships from the 13 emerging maps indicated a moderate competing effect between physically active and sedentary SMU patterns. Higher SES and overweight status were linked to either active or inactive behaviors. Three target clusters were explored in more detail. Cluster 1, named temperate-media actives, showed capabilities of being active while engaging in a moderate level of SMU (TV/video/DVD mainly). In Cluster 2, named prudent-media inactives, and Cluster 3, compulsive-media inactives, a competing effect between SMU and PA emerged, being sedentary SMU behaviors responsible for a low involvement in active pursuits.

Conclusions:

SMU and PA emerge as both related and independent behaviors in girls, resulting in a moderate competing effect. Findings support the case for recommending the timing of PA and SMU for recreational purposes considering different profiles, sociodemographic factors and types of SMU.

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Alexandra Valencia-Peris, Joan Úbeda-Colomer, Jorge Lizandra, Carmen Peiró-Velert and José Devís-Devís

The time children and adolescents engage in screen media activities is a current public health concern, particularly because of the potential negative consequences linked to sedentary behaviors. 1 Despite recommendations not to exceed 2 hours per day of recreational screen time, 2 longitudinal

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Elizabeth E. Dawson-Hahn, Megan D. Fesinmeyer and Jason A. Mendoza

Background:

Physical activity is associated with long-term benefits for health and tracks from early childhood into later adolescence. Limited information exists about factors influencing physical activity among Latino preschoolers. We aimed to identify correlates of objectively measured light-to-vigorous-intensity physical activity as a proportion of wear time (% PA) in Latino 3–5 year olds.

Methods:

Latino preschoolers (n = 96) were recruited from Head Start centers in Houston, TX, USA, from 2009 to 2010. Sociodemographics, anthropometrics, acculturation, neighborhood disorder, and TV viewing were measured. Actigraph GT1M accelerometers measured physical activity. Block linear regression was used with % PA as the dependent variable.

Results:

Children achieved 285.7 ± 58.0 min/day of PA. In the final adjusted-model, child age, parental education and neighborhood disorder were positively associated with % PA (beta = 0.33, p = .002; beta = 0.25, p = .038; beta = 0.22, p = .039, respectively). TV viewing was inversely associated with % PA (beta=-0.23, p = .027).

Conclusion:

The majority of Latino preschoolers in our study exceeded US national and international guidelines of physical activity duration. Future interventions to sustain physical activity should focus on the influence of age, socioeconomic status, neighborhood disorder, and TV viewing on Latino preschoolers’ attainment of physical activity.

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Chelsea L. Kracht, Elizabeth K. Webster and Amanda E. Staiano

J . Correlates of mobile screen media use among children aged 0–8: a systematic review . BMJ Open . 2017 ; 7 ( 10 ): e014585 . PubMed ID: 29070636 doi:10.1136/bmjopen-2016-014585 10.1136/bmjopen-2016-014585 29070636 17. Staiano AE , Webster EK , Allen AT , Jarrell AR , Martin CK

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Lennart Raudsepp and Kristi Vink

Sedentary behavior is defined as “any waking behavior characterized by an energy expenditure of ≤1.5 metabolic equivalents while in a sitting or reclining position”. 1 The American Academy of Pediatrics has recommended that children over 2 years of age use screen media for no more than 2 hours

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Patrick Abi Nader, Lina Majed, Susan Sayegh, Lama Mattar, Ruba Hadla, Marie Claire Chamieh, Carla Habib Mourad, Elie-Jacques Fares, Zeina Hawa and Mathieu Bélanger

Behaviour Epidemiology . Cham, Switzerland : Springer International Publishing ; 2018 : 31 – 56 . doi:10.1007/978-3-319-61552-3_2 10.1007/978-3-319-61552-3_2 32. Samaha M , Hawi NS . Associations between screen media parenting practices and children’s screen time in Lebanon . Telemat Inform