Comportamentos ativos e sedentários durante o período de permanência na escola

• Ano de defesa: 2012
• Autor(a) principal: Domingues, Sabrina Fontes
• Orientador(a): Amorim, Paulo Roberto dos Santos
• Banca de defesa: Farinatti, Paulo de Tarso Veras
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Educação Física
• Departamento: Aspectos sócio-culturais do movimento humano; Aspectos biodinâmicos do movimento humano
• País: BR
• Palavras-chave em Português: Escolares; Atividade física; Acelerometria
• Palavras-chave em Inglês: School; physical activity; accelerometry
• Área do conhecimento CNPq: CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA
• Link de acesso: http://locus.ufv.br/handle/123456789/3474

The school environment is essential in achieving the daily recommendations of 60 minutes from moderate to vigorous physical activities (MVPA) for schoolchildren, by stimulating active behaviors during recess and in physical education classes (PEC). Identify the contribution of sex, teaching network and body mass index (BMI) in the active and sedentary behaviors during the period of staying in school, particularly in the reach of MVPA recommendations for this age group. We evaluated 150 schoolchildren (80 girls and 70 boys) at the age of 10 (5th grade of elementary school) in Viçosa-MG. We measured body mass and height, besides the amount of movements performed in each 5 seconds during the period of staying in school over the course of 5 consecutive days, with the accelerometer ActiGraphGT3X. The movements were classified such as sedentary (&#8804; 100counts/min), light (between 101 and 2295counts/min), moderate (between 2296 and 4011counts/min) and vigorous (&#8805; 4012counts/min). For the data analysis, we used descriptive statistics for general data, Student's t test for independent samples to evaluate occasional differences between the sexes and linear regression to verify the contribution of sex, teaching network and BMI, to different intensities of physical activities and time engaged in MVPA at different times of staying in the school. The sex was considered a predictor variable of sedentary, moderate, vigorous and moderate to vigorous physical activities. However, the teaching network was associated only to the light physical activities and BMI activities light and vigorous. During the active and seated in the classroom times, it was considered as predictors of MVPA time the variables sex and teaching network. The boys practiced, on average, 5,84±1,19 and 1,41±0,49 minutes more MVPA during active (p <0,001) and seated in the classroom times (p <0,01) respectively, and that the private schools schoolchildren practiced, on average, 2,62±1,33 and 1,79±0,59 minutes over MVPA during the active (p <0,01) and seated in classroom times (p <0,01), respectively. The sex was a determinant factor in the time engaged in MVPA during recess (p <0,001) as the PEC (p <0,01). MVPA contributions in the period of staying in the school, active and seated in the classroom times, during recess and the PE were approximately 10, 11, 4, 3 and 8 minutes respectively. The boys were more active and less sedentary than girls, especially in time engaged in MVPA at all moments evaluated. Private schools students were engaged for a greater time in light activities during the period of staying in the school and in MVPA active and seated in the classroom times. The BMI evidenced an inverse association with vigorous activities, and direct with the light in the period of staying in the school. The MVPA recommendations contributions for children and teenagers reached low levels during the period of staying in the school (16%), in the active (18%) and sedentary times (6%) and recess (5%) and PEC (13%).