Sedentary Behavior
Conditions
Interventions
This is an analytical cross-sectional epidemiological study, with a school-based census population, to be conducted with 3.783 adolescents aged 14 to 19 years enrolled in the integrated high school pr
regular physical activity practice, screen time, smartphone dependence, sleep duration and quality, excessive daytime sleepiness, dietary intake, use of psychoactive substances (alcohol, tobacco, and
Sponsors
Programa de Pós-graduação Stricto Sensu em Educação Física da Universidade Católica de Brasília - PPGEF-UCB
Universidade Católica de Brasília - UCB
Eligibility
Age
14 Years to 19 Years
Inclusion criteria
Inclusion criteria: Students of both sexes; aged between 14 and 19 years; regularly enrolled in the integrated technical high school programs at the Federal Institute of Brasília (IFB); presentation of the Informed Consent Form signed by parents or guardians for those under 18 years old, or by the adolescents themselves for those aged 18 or 19; and presentation of the Assent Form signed by adolescents under 18 years old
Exclusion criteria
Exclusion criteria: Physical and/or mental conditions that compromise safe participation, such as inability to understand or respond to questionnaires, severely reduced mobility; pregnant adolescents; absence on assessment days (resulting in incomplete data); and voluntary withdrawal
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The prevalence of health risk behaviors – including physical inactivity, high sedentary behavior, smartphone addiction, inadequate sleep, poor dietary habits, use of psychoactive substances (alcohol, nicotine products, and illicit drugs), and exposure to family and school risk factors – will be equal to or greater than 50% among adolescents. | — |
Secondary
| Measure | Time frame |
|---|---|
| The prevalence of symptoms of depression, anxiety, stress, body dissatisfaction, low self-esteem, and poor health-related quality of life will be high (>40%) among adolescents.;Female adolescents with lower family income, low parental education, non-traditional family structure, and residing in urban areas will exhibit a significantly higher prevalence of health risk behaviors (p < 0.05).;Adolescents reporting higher perceived barriers, lower self-efficacy, and lower social support will show higher likelihood of engaging in health risk behaviors. In contrast, higher motivation levels will be associated with lower prevalence of such behaviors (p < 0.05).;Health risk behaviors will be positively associated with the presence of symptoms of depression, anxiety, stress, body dissatisfaction, low self-esteem, and poorer health-related quality of life (p < 0.05).;Health risk behaviors will be significantly associated with poorer cardiometabolic health indicators, including higher body mass index, greater body fat, elevated blood pressure, lower cardiorespiratory fitness, and reduced muscular strength (p < 0.05). | — |
Countries
Brazil
Contacts
Public ContactRodrigo Alberto Browne
Universidade Católica de Brasília
Outcome results
None listed