A study (ID# 1118) from Israel that is being presented as an oral presentation this morning at SLEEP 2008 shows that teens may have improved attention and concentration when their school start time is delayed.
The study involved 47 eighth-grade students from two classes. A control group began school at the regular time (7:30 a.m.) each day for two weeks. The experimental group began the schoolday one hour later (8:30 a.m.) during week one and then at the usual time during week two.
During the first week, students in the experimental group woke up an average of 51 minutes later each morning than students in the control group. Bedtime remained the same.
The experimental group performed better than the control group on two cognitive tests that were performed on the fifth day of the first week. They had a better overall attention score on a computerized test and made fewer mistakes on a paper-and-pencil test.
According to the American Academy of Sleep Medicine, teens need a little more than nine hours of sleep each night to be alert the next day.
The SLEEP 2008 abstract book is available online at http://www.journalsleep.org/PDF/AbstractBook2008.pdf.
Showing posts with label school. Show all posts
Showing posts with label school. Show all posts
Thursday, June 12, 2008
Monday, June 9, 2008
Blame the Cell Phone, Early School Start Times for Teen Sleep Loss?
A research abstract being presented as a poster presentation today at SLEEP 2008 provides an interesting explanation for why some teens may not be sleeping well: They spend too much time on the cell phone.
The study of 21 teens (ID# 0249) shows that those who have more than 15 calls and/or 15 text messages a day are more likely to sleep poorly than teens who make less than five calls and/or send five text messages a day.
Excessive cell-phone users are more prone to disrupted sleep, restlessness, stress and fatigue. They also have more trouble waking up in the morning and are more tired before mid-day.
One member of the study group had more than 200 text messages per day. Only one of the 21 participants turned the cell phone off at night.
Another abstract presentation (ID# 0226) addresses a common cause of teen sleep loss: early school start times.
Following a 40-minute delay in the school start time from 7:35 a.m. to 8:15 a.m., students’ total sleep time on school nights increased by 33 minutes per night from 7 hours and 2 minutes to 7 hours and 35 minutes. Students went to bed about eight minutes later at night, but they slept in 41 minutes later in the morning, waking up at 6:53 a.m. instead of 6:12 a.m.
More students reported having “no problem” with sleepiness after the schedule change.
The American Academy of Sleep Medicine recommends that teens get a little more than nine hours of sleep each night to feel alert and well rested during the day.
The SLEEP 2008 abstract book is available online at http://www.journalsleep.org/PDF/AbstractBook2008.pdf.
The study of 21 teens (ID# 0249) shows that those who have more than 15 calls and/or 15 text messages a day are more likely to sleep poorly than teens who make less than five calls and/or send five text messages a day.
Excessive cell-phone users are more prone to disrupted sleep, restlessness, stress and fatigue. They also have more trouble waking up in the morning and are more tired before mid-day.
One member of the study group had more than 200 text messages per day. Only one of the 21 participants turned the cell phone off at night.
Another abstract presentation (ID# 0226) addresses a common cause of teen sleep loss: early school start times.
Following a 40-minute delay in the school start time from 7:35 a.m. to 8:15 a.m., students’ total sleep time on school nights increased by 33 minutes per night from 7 hours and 2 minutes to 7 hours and 35 minutes. Students went to bed about eight minutes later at night, but they slept in 41 minutes later in the morning, waking up at 6:53 a.m. instead of 6:12 a.m.
More students reported having “no problem” with sleepiness after the schedule change.
The American Academy of Sleep Medicine recommends that teens get a little more than nine hours of sleep each night to feel alert and well rested during the day.
The SLEEP 2008 abstract book is available online at http://www.journalsleep.org/PDF/AbstractBook2008.pdf.
Research Abstracts Examine the Effect of Sleep on School Performance
Research abstracts being presented as poster presentations this morning at SLEEP 2008 are describing the link between sleep and school performance.
One study (ID# 0199) found that different sleep variables affect the school performance of students in junior high, high school and college. In junior high, the complaint of restless legs/aching legs is more common in students with a lower grade-point average (GPA). Daytime sleepiness is more likely to affect the performance of high school students. Insomnia has the most negative effect on the GPA of college students.
A related study of adult college students (ID# 0709) found that insomnia complaints are significantly associated with lower GPAs. Students with lower GPAs were more likely to have trouble falling asleep, report waking at night and have trouble going back to sleep.
A study of 824 undergraduate students (ID# 0728) found that students who are “morning types” (preferring to wake up early) are more likely to have better grades than students who are “evening types” (preferring to stay up late).
The SLEEP 2008 abstract book is available online at http://www.journalsleep.org/PDF/AbstractBook2008.pdf.
One study (ID# 0199) found that different sleep variables affect the school performance of students in junior high, high school and college. In junior high, the complaint of restless legs/aching legs is more common in students with a lower grade-point average (GPA). Daytime sleepiness is more likely to affect the performance of high school students. Insomnia has the most negative effect on the GPA of college students.
A related study of adult college students (ID# 0709) found that insomnia complaints are significantly associated with lower GPAs. Students with lower GPAs were more likely to have trouble falling asleep, report waking at night and have trouble going back to sleep.
A study of 824 undergraduate students (ID# 0728) found that students who are “morning types” (preferring to wake up early) are more likely to have better grades than students who are “evening types” (preferring to stay up late).
The SLEEP 2008 abstract book is available online at http://www.journalsleep.org/PDF/AbstractBook2008.pdf.
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