Delaying School Start Times is Beneficial to Students: AASM

by Bidita Debnath on  April 15, 2017 at 11:56 PM Research News
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A new position statement from the American Academy of Sleep Medicine (AASM) asserts that the school day should begin at 8:30 a.m. or later for middle school and high school students.
 Delaying School Start Times is Beneficial to Students: AASM
Delaying School Start Times is Beneficial to Students: AASM

Data show that later start times provide adolescents the opportunity to get sufficient sleep on school nights, which optimizes daytime alertness, reduces tardiness and improves school attendance. A later school start time supports peak academic performance, more opportunities for learning, better mental health, and enhanced driving safety.

"Early school start times make it difficult for adolescents to get sufficient sleep on school nights, and chronic sleep loss among teens is associated with a host of problems, including poor school performance, increased depressive symptoms, and motor vehicle accidents," said lead author and AASM Past President Dr. Nathaniel Watson. "Starting school at 8:30 a.m. or later gives teens a better opportunity to get the sufficient sleep they need to learn and function at their highest level."

The position statement is published in the April 15 issue of the Journal of Clinical Sleep Medicine.

The AASM recommends that teenagers 13 to 18 years of age should sleep 8 to 10 hours on a regular basis to promote optimal health. However, CDC data show that 68.4 percent of high school students report sleeping 7 hours or less on school nights. Early middle school and high school start times work contrary to adolescent circadian physiology and truncate students' sleep opportunity, resulting in chronic sleep loss.

Studies show that short sleep in adolescents is associated with the following:

Poor school performance

Obesity

Metabolic dysfunction and cardiovascular morbidity

Increased depressive symptoms

Suicidal ideation

Risk-taking behaviors

Athletic injuries

Insufficient sleep also is associated with an increased risk of motor vehicle accidents, which account for 35 percent of all deaths and 73 percent of deaths from unintentional injury in teenagers. Research suggests that crash rates decline by 16.5 percent following a school start time delay of 60 minutes.

Source: Eurekalert

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