睇兩邊咩意思,講幾多歲。而家早熟,都要考慮。
https://www.cpr.cuhk.edu.hk/tc/press/cuhk-study-sees-shorter-sleep-put-adolescents-at-risk-of-future-cardiovascular-diseases/
中大的研究小組早前已經證明,將學校開始上課的時間適度延遲15分鐘,能令學童自覺得到較優質及充足的睡眠,能相應改善他們的情緒和行為。
中大醫學院兒科學系助理教授陳晶晶醫生表示:「青少年較常有睡眠不足和生理時鐘延後的問題,而我們的研究結果正好反映充足睡眠對青少年的重要性。一些簡單措施如延遲學校開始上課的時間以增加睡眠時數,可能是減低這些青少年於成年期心血管疾病發病率和死亡率的方法之一。」
https://heho.com.tw/archives/133753
台大兒童醫院兒童胸腔加護醫學科醫師呂立就說,其實根據研究發現,青少年正常來說應該是「晚睡晚起」,因為褪黑激素的分泌比較晚,所以青少年在正常的睡覺時間,本來就會「睡不著」;所以「早睡早起」生活作息,整體應該再晚 1 個小時,比較能符合青少年時期的內分泌改變,「現在對他們來說太辛苦了!」
Delaying Middle School and High School Start Times Promotes Student Health and Performance: An American Academy of Sleep Medicine Position Statement
https://pmc.ncbi.nlm.nih.gov/articles/PMC5359340/
During adolescence, internal circadian rhythms and biological sleep drive change to result in later sleep and wake times. As a result of these changes, early middle school and high school start times curtail sleep, hamper a student's preparedness to learn, negatively impact physical and mental health, and impair driving safety. Furthermore, a growing body of evidence shows that delaying school start times positively impacts student achievement, health, and safety. Public awareness of the hazards of early school start times and the benefits of later start times are largely unappreciated. As a result, the American Academy of Sleep Medicine is calling on communities, school boards, and educational institutions to implement start times of 8:30 AM or later for middle schools and high schools to ensure that every student arrives at school healthy, awake, alert, and ready to learn.
https://publications.aap.org/pediatrics/article/134/3/642/74175/School-Start-Times-for-Adolescents
The American Academy of Pediatrics recognizes insufficient sleep in adolescents as an important public health issue that significantly affects the health and safety, as well as the academic success, of our nation’s middle and high school students. Although a number of factors, including biological changes in sleep associated with puberty, lifestyle choices, and academic demands, negatively affect middle and high school students’ ability to obtain sufficient sleep, the evidence strongly implicates earlier school start times (ie, before 8:30 am) as a key modifiable contributor to insufficient sleep, as well as circadian rhythm disruption, in this population. Furthermore, a substantial body of research has now demonstrated that delaying school start times is an effective countermeasure to chronic sleep loss and has a wide range of potential benefits to students with regard to physical and mental health, safety, and academic achievement. The American Academy of Pediatrics strongly supports the efforts of school districts to optimize sleep in students and urges high schools and middle schools to aim for start times that allow students the opportunity to achieve optimal levels of sleep (8.5–9.5 hours) and to improve physical (eg, reduced obesity risk) and mental (eg, lower rates of depression) health, safety (eg, drowsy driving crashes), academic performance, and quality of life.