Association Between Television Viewing and Physical Activity in 10-Year-Old Brazilian Children

Ferrari, Gerson Luis de Moraes; Araújo, Timóteo Leandro; Oliveira, Luís C.; Matsudo, Victor; Mire, Emily F.; Barreira, Tiago V.; Tudor-Locke, Catrine; Katzmarzyk, Peter T.

doi:10.1123/jpah.2014-0406

Cited by 19 publications

(11 citation statements)

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“…A Brazilian study conducted by Dutra et al27 reported a prevalence of sedentary lifestyle of more than 70% and that screen time was inversely associated with physical activity. Similarly, Ferrari et al28 found a higher prevalence of children meeting moderate to vigorous physical activity guidelines among children who watched ≤2h/day of television. Still, insufficient physical activity should not be related to sedentary behaviours as it is not directly linked to sedentary activities investigated in this study, i.e.…”

Section: Discussionmentioning

confidence: 90%

Atividade física e tempo de tela em jovens de uma cidade de médio porte do Sul do Brasil

Greca

Silva

Loch

2016

Revista Paulista de Pediatria

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Section: Discussionmentioning

confidence: 90%

Atividade física e tempo de tela em jovens de uma cidade de médio porte do Sul do Brasil

Greca

Silva

Loch

2016

Revista Paulista de Pediatria

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“…Of these 62, ~18% of studies were conducted in the U.S. [30, 39, 46, 47, 121–127], with the remaining studies from other countries [63, 65, 67, 72, 73, 77, 79, 89, 93–95, 99–101, 103, 104, 106, 108, 111, 112, 115, 118, 128–149]. The majority of the sedentary/screen time estimates reported in the literature came from self-report measures (e.g., surveys, questionnaires, recalls).…”

Section: Resultsmentioning

confidence: 99%

Understanding differences between summer vs. school obesogenic behaviors of children: the structured days hypothesis

Brazendale

Beets

Weaver

et al. 2017

Int J Behav Nutr Phys Act

527

430

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BackgroundAlthough the scientific community has acknowledged modest improvements can be made to weight status and obesogenic behaviors (i.e., physical activity, sedentary/screen time, diet, and sleep) during the school year, studies suggests improvements are erased as elementary-age children are released to summer vacation. Emerging evidence shows children return to school after summer vacation displaying accelerated weight gain compared to the weight gained occurring during the school year. Understanding how summer days differ from when children are in school is, therefore, essential.DiscussionThere is limited evidence on the etiology of accelerated weight gain during summer, with few studies comparing obesogenic behaviors on the same children during school and summer. For many children, summer days may be analogous to weekend days throughout the school year. Weekend days are often limited in consistent and formal structure, and thus differ from school days where segmented, pre-planned, restrictive, and compulsory components exist that shape obesogenic behaviors. The authors hypothesize that obesogenic behaviors are beneficially regulated when children are exposed to a structured day (i.e., school weekday) compared to what commonly occurs during summer. This is referred to as the ‘Structured Days Hypothesis’ (SDH). To illustrate how the SDH operates, this study examines empirical data that compares weekend day (less-structured) versus weekday (structured) obesogenic behaviors in U.S. elementary school-aged children. From 190 studies, 155 (~80%) demonstrate elementary-aged children’s obesogenic behaviors are more unfavorable during weekend days compared to weekdays.ConclusionIn light of the SDH, consistent evidence demonstrates the structured environment of weekdays may help to protect children by regulating obesogenic behaviors, most likely through compulsory physical activity opportunities, restricting caloric intake, reducing screen time occasions, and regulating sleep schedules. Summer is emerging as the critical period where childhood obesity prevention efforts need to be focused. The SDH can help researchers understand the drivers of obesogenic behaviors during summer and lead to innovative intervention development.

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“…A Brazilian study [31], in children and adolescents, reported that screen time was inversely related with PA. Similarly, Ferrari et al [32], found a higher prevalence of children meeting vigorous PA guidelines among children who watched ≤2h/day television. There was no significant difference in total sleep between the both athletes and non athletes groups, suggesting that sleep time was not affected by the sport duration, in school or outside.…”

Section: Discussionmentioning

confidence: 85%

Nutritional Status, Oxidant/Antioxidant and Inflammatory Markers in Scholar Athletes Adolescents

Bouchouicha¹,

Ghomari-Boukhatem²,

Bouchenak³

2017

AJSSM

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In the last two or three decades, physical activity (PA) has gained increasing recognition as being essential for maintaining good health and improving quality of life for all ages. To evaluate the nutritional status, oxidant/antioxidant, and inflammatory markers, in sports adolescents, a cross sectional study has done in west Algeria. A total of 110 athletes adolescents from special sport classes, aged 11-17 years, were compared to a non athletes group (n=60). Blood pressure, anthropometric and serum parameters were measured. Daily energy intake (DEI) was estimated using 24 hours recall, followed by a 3-days record. Energy expenditure (EE) was evaluated by the International Physical Activity Questionnaire-short form (IPAQ-S). Oxidant/antioxidant and inflammatory markers were determined. An increase in body weight and height (p<0.001) was noted in athletes compared to non athletes. DEI was similar in both groups, whereas EE was higher in athletes than non athletes (p<0.001). Serum triacylglycerol (TG) values were lower in athletes group than in non athletes (p<0.05). Enhanced values were observed in glutathione peroxidase (GPx) (p<0.001), and superoxide dismutase (SOD) (p<0.05) activity, and tumor necrosis factor-α (TNF-α) (p<0.01) in athletes compared to non athletes. Significant relationships were found between height, weight, albumin, GPx, TNF-α, IL-1, and EE. Significant associations were noted between GPx (OR=0.14; 95% CI 0.03, 1.05), inflammatory markers TNF-α (OR=0.47; 95% CI 0.28, 0.80), IL-1 (OR=1.17; 95% CI 0.28, 0.80) and physical activity. Significant relationships were found between weight (P < 0.001), height (P < 0.01), albumin, GPx, IL-1, TNFα (P < 0.05) and EE. In spite of inadequate DEI in athletes adolescents, beneficial effect of sport is observed by lowering serum TG concentrations. However, more research in this area is warranted to clarify sport nutrition needs to provide better and healthy nutritional guidance to young athletes.

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Association Between Television Viewing and Physical Activity in 10-Year-Old Brazilian Children

Abstract: Time spent in MVPA and the frequency of meeting MVPA guidelines were significantly higher among children viewing ≤ 2 hours/day of TV on weekdays compared with those viewing more.

Cited by 19 publications

References 0 publications

Atividade física e tempo de tela em jovens de uma cidade de médio porte do Sul do Brasil

Atividade física e tempo de tela em jovens de uma cidade de médio porte do Sul do Brasil

Understanding differences between summer vs. school obesogenic behaviors of children: the structured days hypothesis

Nutritional Status, Oxidant/Antioxidant and Inflammatory Markers in Scholar Athletes Adolescents

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