Sex Differences in Temporal Sleep Patterns, Social Jetlag, and Attention in High School Adolescents.

Insufficient sleep and irregular sleep hours are common in adolescents, who experience a delayed sleep phase due to biopsychosocial changes associated with puberty, resulting in later sleep times. However, early morning class hours shorten sleep duration on weekdays. This condition is harmful to cognitive performance, which may be accentuated in girls due to a greater sleep need and less resistance to sleep deprivation.

Comparative analysis of sleep patterns and attention components in high school and college adolescents.

Adolescence is a phase with physiological and behavioral changes. One of them occurs in the sleep-wake cycle pattern, manifested by a phase delay. However, morning school start time can decrease sleep duration during weekdays, impairing adolescent cognitive performance and well-being.

Daily light exposure, sleep-wake cycle and attention in adolescents from different urban contexts.

Objective: to compare daily light exposure, activity-rest rhythm, sleep-wake cycle (SWC) and attention in Brazilian students living in different levels of urbanization.

Methods: 115 adolescents (74 girls), aged 14-18 years (mean 15.5 ± 0.