Congresso Brasileiro do Sono

Página Inicial » Inscrições Científicas » Trabalhos

Dados do Trabalho


Sleep quality in adolescents studying in the morning shift at a public school at Cascavel (PR), Brazil.


In adolescence, a period characterized by profound changes, the sleep-wake cycle also changes: a sleep phase delay occurs. Despite this, the final grades of elementary school and high school are offered standardly in the morning (beginning between 7am and 7:30 am). Among adolescents there is a high use of electronic devices before they sleep may contribute to sleep difficulties, as it alters the modulation of the light-dark cycle of WSC.


Evaluate quality of sleep and the use of electronic devices in adolescents studying in the morning shift in a public school in Cascavel (PR), Brazil.


The research was designed as cross-sectional study, quantitative and descriptive, based on application of
Pittsburgh Sleep Quality Index (PSQI), added a question, along the lines of the questionnaire, on the use of electronic devices (like cell phone, tablet and notebook) before bed. Students from a ninth grade elementary school and first, second and third year vocational of high school (information technology) from a State College were evaluated. This study was approved by the Committee of Ethics in Human Beings (n. 3.451.752) and signed hose responsible for adolescents. We evaluated 73 students of both sexes (48 male and 25 female) aged 15.37±1.23. Statistical analysis was made using the program IBM-SPSS.


91.8% of students used electronic devices at bedtime; 72% of them three or more times a week. Total score of PSQI=5.75±3.02. 52.1% had PSQI> 5, indicating poor sleep quality, with 10.9% reaching score ≥ 10. The PSQI components were reached these scores: 01 (subjective sleep quality: 0.86±0.75); 02 (sleep latency: 0.88±0.87); 03 (sleep duration: 0.86±0.97); 04 (habitual sleep efficiency: 0.62±0.89); 05 (sleep disorders: 1.15±0.62), 06 (use of sleeping medications: 0.1±0.51) and component 07 (daytime dysfunction: 1.33±0.87). The PSQI components that scored higher were component 05 (sleep disorder) and 07 (daytime dysfunction); with occurrences one or more times per week of 89.1% and 84.9%, respectively.


Students presented high use of electronic devices at bedtime and most of them had poor sleep quality. Studies like this are needed to disseminate prophylactic sleep hygiene measures that contribute to improve sleep quality as well as contribute to a scientific effort to demonstrate that the morning school shift should start later, allowing adolescents to develop healthier.


sleep; school; adolescents.


Área Básica


Universidade Estadual do Oeste do Paraná (Unioeste) - Parana - Brasil


Aline Pinheiro Picole, Felipe Patricky de Andrade, Ana Carla Marques da Silva