Obesity and decrease of daily physical activity among children and adolescents: a follow-up study

• Autor(a) principal: Mercês de Jesus, Gilmar
• Data de Publicação: 2021
• Outros Autores: Andrade Dias, Lizziane, Cerqueira Barros, Anna Karolina, Matos dos Santos Araujo, Lara Daniele, Kupek, Emil, Altenburg de Assis, Maria Alice
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Cineantropometria & Desempenho Humano (Online)
• DOI: 10.1590/1980-0037.2021v23e78251
• Texto Completo: https://periodicos.ufsc.br/index.php/rbcdh/article/view/78251
• topic: Uso de drogas; Famílias; Saúde mental.

We analyzed the effect of obesity on daily physical activity (DPA) and on light-intensity physical activity (LPA), moderate-intensity physical activity (MPA) and vigorous- intensity physical activity (VPA). Overall, 462 students from a public school (53.6% boys; aged 7-12 years) were involved in this one-year longitudinal study. Physical activities and sedentary behaviors (SB) were reported in the questionnaire Food Intake and Physical Activity of Students (Web-CAAFE). Obesity was evaluated through Body Mass Index (BMI z score ≥ 2). Obesity was observed in 16.5% of participants, but it did not influence LPA, MPA or DPA. However, VPA were 20% less frequent among obese students (β²=0.80; CI 95%: 0.66-0.98). Obese girls showed less frequency of VPA than non-obese boys (Mean Difference = -0.97; CI 95%: -1.36 to -0.57).  Non-obese girls showed less VPA than non-obese boys (Mean Difference = -1.18; CI 95%: -1.40 to -0.95) and obese ones (Mean Difference = -0.57; CI 95%: -0.90 to -0.24). Obese boys showed fewer VPA, if compared to non-obese ones (Mean Difference = -0.61; CI 95%: -0.96 to -0.26). The analysis of the obesity-sex-age interaction showed that there was a greater reduction in VPA among obese girls aged 10 years or more when compared to obese girls aged 7-9 years, and to boys obese and non-obese regardless of age. Amounts of VPA and SB increased simultaneously among non-obese boys and non-obese children aged 7-9 years. Obesity reduced VPA in the sample during the follow up of one year, independently of age and SB.