Excessive TV viewing time and associated factors in Brazilian adolescents from a rural area

Abstract

Purpose. Sedentary behavior has been identified as a risk factor for chronic non-communicable diseases. This study identified the prevalence of excessive TV viewing time during the week and weekend and associated factors in adolescents living in a small urban and rural area. Methods. A cross-sectional study involving 283 students (aged 10-19 years) from Brazil was conducted in 2010. Data on TV viewing time and sociodemographic information were collected by questionnaires, cardiorespiratory fitness was evaluated by the 20-m shuttle run test, and anthropometric characteristics were obtained by measuring waist circumference and skinfold thickness. Statistical analysis involved binary logistic regression. Results. The prevalence of excessive TV viewing time ( 2 h) was 76.7% during on weekdays and 78.4% on the weekend. Adolescents aged 10-12 years (Or = 6.20; 95% CI = 2.91, 13.19; p < 0.001) and 13-15 years (Or = 2.57; 95% CI = 1.28, 5.18; p = 0.008) were more exposed to excessive TV viewing time during the week. No associations were found for excessive TV viewing time on the weekend. Conclusions. Approximately 8 in 10 adolescents presented excessive TV viewing time; excessive TV viewing time during the week was associated with age.

Prevalência de crianças e adolescentes brasileiros que atenderam critérios de saúde para aptidão cardiorrespiratória: uma revisão sistemática

“…We emphasize the variety of tests used by studies to evaluate CRF (6-minute walk/run test, 9-minute walk/run test, treadmill ergospirometry, mCAFT test and 20-meter shuttle-run test) being considered submaximal [70][71][72]81,82,84 and maximal tests 9,10,58,[60][61][62][63][64][65][66][67][68][69][73][74][75][76][77][78][79][80]83,[85][86][87][88][89][90] in a direct 30 or indirect way 9,10,15,17-40,58.60-70.72-80.83.85-90 .…”

“…Regarding gender, in boys, the prevalence of individuals with healthy CRF ranged from 10.0% 68 to 72.5% 25,26,69 , and in girls from 3.7% 60,61 to 79.4% [70][71][72] . A total of 49,093 children and young from six to 19 years of age were screened for all these studies, resulting in 32.2% (27.7% of boys and 28.4%) of subjects with CRF levels adequate for health throughout Brazil (Table 3).…”

“…Fronza et al 69 Minatto et al 25 Minatto et al 26 10 Oliveira et al 61 Silva et al 60 10-14 1,081 (♂: 545; ♀: 536) 9-minute run/walk test AAHPERD 52 Total: 7.5% (n=81) Sex ♂: 11.2% (n=61) ♀: 3.7% (n=20) Paludo et al 30 10-12 115 (♂: 61; ♀: 54) 65 Petroski et al 66 Petroski et al 33 Silva et al 67 : median; PROESP: Project Sports Brazil; CRF: cardiorespiratory fitness; CSEP: Canadian Society for Exercise Physiology; AAHPERD: American Alliance for Health Physical Education Recreation and Dance; a without reference because the article does not include the year of the cut-point of PROESP-BR; * value calculated based on the following equation: [(number of subjects with adequate aerobic fitness/number of subjects in the total sample) * 100]; † sum of the total sample of the studies collected, without stratifying by sex -for the studies that only investigated one of the two sexes, the value of the sample was computed in the sex-specific information.…”

Sedentary behavior and body composition in children of low-and mid-income countries: a review

“…Fronza et al 28 High BF% OR = 0.85; 95%CI: 0.34-2. 17 Zhang et al 58 Girls with 6-11 and 12-18 years old Boys with 6-11 years old…”

CIAFIS – Congresso Internacional de Atividade Física, Nutrição e Saúde

“…Sobre as diferenças na prevalência de exposição ao tempo de tela entre os dias de semana e os dias de final de semana, foram verificaram maiores prevalências nos dias de fim de semana em comparação aos dias de semana (Bezerra et al, 2015;Fronza, Minatto, Martins, & Petroski, 2015;Mélo, Meneses, Silva Júnior, Wanderley Júnior, & Barros, 2012). Essas diferenças podem ser explicadas pelo fato das atividades terem padrões diferentes no meio e nos finais de semana, sendo as atividades realizadas no meio da semana mais facilmente lembradas por serem mais sistematizadas e nos fins de semana apresentar uma maior variabilidade (Pate et al, 2008).…”