Key Findings:
- Sleep Duration and Cognitive Performance: The study analyzed analysed data from over 3,200 adolescents aged 11-12, utilizing wearable FitBit devices to objectively measure sleep patterns. Findings revealed that adolescents could be categorized categorised into three groups based on their sleep duration:
- Group One: An average of 7 hours and 10 minutes of sleep, typically going to bed the latest and waking up the earliest.
- Group Two: An average of 7 hours and 21 minutes of sleep, displaying average sleep characteristics.
- Group Three: An average of 7 hours and 25 minutes of sleep, going to bed the earliest and exhibiting lower heart rates during sleep.
- Cognitive Test Performance: While there were no significant differences in academic achievement among the groups, cognitive tests measuring vocabulary, reading, problem-solving, and focus revealed that Group Three outperformed Group Two, who in turn performed better than Group One. This suggests that even small variations in sleep duration can influence cognitive capabilities.
- Brain Structure and Function: The research found that Group Three not only had better cognitive performance but also larger brain volumes and more efficient brain functions, reinforcing the connection between adequate sleep and brain health.
- Sleep Recommendations: Despite the positive effects of sleep, the study highlighted that many adolescents do not meet the recommended 8 to 10 hours of sleep per night, as advised by the American Academy of Sleep Medicine. This lack of sleep can affect their cognitive development during a critical period of growth.
Professor Barbara Sahakian, a leading researcher in the study, emphasized emphasised the importance of understanding adolescent sleep patterns, stating, “Regularly getting a good night’s sleep is important in helping us function properly… how long do young people sleep for, for example, and what impact does this have on their brain function and cognitive performance?”
As the study indicates, promoting better sleep habits among adolescents could lead to enhanced cognitive performance and overall well-being. Addressing factors that contribute to inadequate sleep, such as late-night screen time, may be crucial for improving sleep quality in this age group.
For further insights into this important research, visit the full article here: Adolescents who sleep longer perform better at cognitive tasks.
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