Effect of a multicomponent intervention on variables related to screen time in adolescents: a cluster-randomized controlled trial

Bandeira, Alexsandra da Silva; Silva, Kelly Samara da; Sá, Soraya Anita Mendes de; Guerra, Paulo Henrique; Mota, Jorge; Filho, Valter Cordeiro Barbosa

doi:10.12820/rbafs.23e0005

Cited by 3 publications

(22 citation statements)

References 17 publications

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“…Interventions were implemented in Brazil (n=5) [25][26][27][28][29] , Mexico (n=3) [30][31][32] , Ecuador (n=1) 33 , and Colombia (n=1) 34 . Most studies involved adolescents and were focused more on girls than boys [25][26][27]33 .…”

Section: Resultsmentioning

confidence: 99%

“…Most studies involved adolescents and were focused more on girls than boys [25][26][27]33 . Five studies had SB as primary objective 25,28,[32][33][34] (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…Most interventions were school-based (n=8) [25][26][27][28]30,[32][33][34] and their lengths ranged from five days to 28 months. Five studies lasted at least six months 25,26,30,32,33 .…”

Section: Description Of the Interventionsmentioning

confidence: 99%

“…One study measured SB by an accelerometer (GT3x+, ActiGraph) 34 , but the others applied questionnaires. Recreational screen time was the most investigated behavior (television, computer and videogame) 25,26,28,[30][31][32][33] . In five studies, over 70% of participants (intervention and control group) completed the intervention 26,[28][29][30]33 .…”

Section: Description Of the Interventionsmentioning

confidence: 99%

“…Recreational screen time was the most investigated behavior (television, computer and videogame) 25,26,28,[30][31][32][33] . In five studies, over 70% of participants (intervention and control group) completed the intervention 26,[28][29][30]33 . Six studies performed their analyses following intention-to-treat principles 25,26,30,31,33,34 .…”

Section: Description Of the Interventionsmentioning

confidence: 99%

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Latin American interventions in children and adolescents’ sedentary behavior: a systematic review

et al. 2020

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OBJECTIVE: To identify and evaluate the effects of community-based interventions on the sedentary behavior (SB) of Latin American children and adolescents. METHODS: A systematic review on community-based trials to reduce and/or control SB in Latin American countries (Prospero: CRD42017072157). Five databases (PubMed, Web of Science, Scopus, SciELO and Lilacs) and a reference lists were searched. RESULTS: Ten intervention studies met the eligibility criteria and composed the descriptive synthesis. These studies were conducted in Brazil (n=5), Mexico (n=3), Ecuador (n=1) and Colombia (n=1). Most interventions were implemented in schools (n=8) by educational components, such as meetings, lessons, and seminars, on health-related subjects (n=6). Only two studies adopted specific strategies to reduce/control SB; others focused on increasing physical activity and/or improving diet. Only one study used an accelerometer to measure SB. Seven studies investigated recreational screen time. Eight studies showed statistically significant effects on SB reduction (80%). CONCLUSIONS: Latin America community-based interventions reduced children and adolescents’ SB. Further studies should: define SB as a primary outcome and implement strategies to reduce such behaviour; focus in different SBs and settings, other than recreational screen time or at-home sitting time; and use objective tools together with questionnaires to measure sedentary behaviour in.

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Section: Resultsmentioning

confidence: 99%

“…Most studies involved adolescents and were focused more on girls than boys [25][26][27]33 . Five studies had SB as primary objective 25,28,[32][33][34] (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…Most interventions were school-based (n=8) [25][26][27][28]30,[32][33][34] and their lengths ranged from five days to 28 months. Five studies lasted at least six months 25,26,30,32,33 .…”

Section: Description Of the Interventionsmentioning

confidence: 99%

Section: Description Of the Interventionsmentioning

confidence: 99%

Section: Description Of the Interventionsmentioning

confidence: 99%

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Latin American interventions in children and adolescents’ sedentary behavior: a systematic review

et al. 2020

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Effectiveness and moderators of a multicomponent school-based intervention on screen time devices: the Movimente cluster-randomized controlled trial

et al. 2021

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Background Interventions targeting reduce screen time in adolescents are urgently needed, mainly in low and middle-income countries because of the lack of evidence. Thus, the aims of the study were to examine the effect of a cluster-randomized controlled trial on screen time (ST) devices among Brazilian adolescents and to identify possible moderators. Methods Movimente was a multicomponent school-based intervention that was performed in 2017 and consisted of teacher training, education curriculum, and environmental improvements. Baseline and post-intervention assessments (over one academic year) were conducted with students aged 10–16 years at baseline (baseline n = 921, [n = 538 intervention group; n = 383 control group]). A self-report questionnaire was used to measure daily minutes of device specific screen time (TV, computer, video games and smartphone) and demographic variables. Linear mixed models were used to examine intervention effects and an exploratory moderation analysis (sex, grade and socioeconomic status) was performed. Results The intervention had no significant effects on TV time (β = − 6.4, 95% CI: − 6.1;13.4), game time (β = − 8.2, 95% CI: − 7.2;10.8), computer time (β = 1.1, 95% CI: − 6.3;18.5), smartphone time (β = − 10.2, 95% CI: − 32.5;12.1), screen time (β = − 12.8, 95% CI: − 50.5;24.8), meeting screen time guidelines (OR: 1.29, 95% CI: 0.65,2.57) and meeting screen time guidelines with smartphone (OR: 1.66, 95% CI: 0.37,7.40). There was a significant intervention effect on reducing TV time (β = − 37.1, 95% CI: − 73.0, − 1.3) among 8th grade students only. Conclusions The Movimente intervention was effective only for TV time among 8th grade students. Understanding how school-based interventions can improve adolescents’ device specific screen time across age groups is needed. Future strategies should cover all screen-based devices. Further, there is a need for more studies in low- and-middle income countries to assist in the development of effective strategies. Trial registration Clinicaltrials.gov identifier NCT02944318 (25/10/2016).

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Tendências De Comportamento Sedentário Entre Estudantes Do Sul Do Brasil

et al. 2023

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Introdução: O comportamento sedentário tem sido motivo de preocupação para os pesquisadores no mundo, especialmente no Brasil. Objetivo: Este estudo comparou a atividade física moderada-vigorosa e o comportamento sedentário em dois anos de dois levantamentos (2008 e 2017), relacionando esses comportamentos à circunferência abdominal. Métodos: Estudo transversal, com 1.783 alunos, de ambos os sexos, com idade entre 10 e 17 anos: 2008 (n = 977) e 2017 (n = 806). Os estudos foram realizados em escolas públicas de um município do sul do Brasil. O nível de atividade física foi avaliado por meio de um questionário de gasto energético. A circunferência abdominal foi considerada alta ≥ 75º percentil para idade e sexo. Os estudantes foram agrupados de acordo com os níveis de atividade física moderada-vigorosa. O tempo sentado foi considerado comportamento sedentário. Resultados: A proporção de meninos ativos em 2008 (62,2%) foi maior do que em 2017 (34,1%; p <0,001), enquanto a frequência de obesidade abdominal foi maior em 2017 (meninos 36,3%, meninas 25,5%) do que em 2008 (15,7% e 10,5%; p <0,001, respectivamente). Em 2017, houve um aumento de 2,8 vezes no risco de prevalência de circunferência abdominal aumentada em relação a 2008 (p <0,001), que foi diretamente relacionado ao aumento de 16,5 vezes no risco de comportamento sedentário elevado (p <0,001) e duas vezes de aumento em quem pratica atividade física moderada-vigorosa < 60min / dia (p <0,001). Conclusão: O risco de obesidade abdominal aumentou na última década em ambos os sexos, o que parece ser principalmente devido ao comportamento sedentário, além do menor nível de atividade física moderada-vigorosa em meninos.

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Effect of a multicomponent intervention on variables related to screen time in adolescents: a cluster-randomized controlled trial

Cited by 3 publications

References 17 publications

Latin American interventions in children and adolescents’ sedentary behavior: a systematic review

Latin American interventions in children and adolescents’ sedentary behavior: a systematic review

Effectiveness and moderators of a multicomponent school-based intervention on screen time devices: the Movimente cluster-randomized controlled trial

Tendências De Comportamento Sedentário Entre Estudantes Do Sul Do Brasil

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