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The right amount of sleep sets kids up best for kindergarten


Consistently sleeping for at least 10 hours a night helps kids adjust during the transition to kindergarten, a new study shows.

In addition to an easier adjustment to kindergarten, children who sleep at least 10 hours during the night on a regular basis demonstrate more success in emotional development, learning engagement, and academic performance across the kindergarten year.

The researchers made this finding after statistically controlling for families’ income-to-needs ratios, child health status, and number of missed days of school.

For the study in Pediatrics, the researchers used a movement-tracking watch to record 220 children’s sleep habits for four, week-long periods across the course of their kindergarten year, starting in July to August before the academic year began.

They then measured sleep habits of these children again in September, November, and April. Alongside these tracking periods, teachers and staff evaluated the students’ adjustments to kindergarten.

“We found that children who had 10 or more hours of sleep per night on a regular basis, particularly before the kindergarten year began, tended to maintain that more optimal sleep pattern across their full kindergarten year,” says Doug Teti, professor of human development and family studies, professor of psychology and pediatrics, and head of the human development and family studies department at Penn State.

“This has significant implications for anyone interested in promoting healthier sleep patterns in children making the transition to first-time schooling; parents should do what they can to help their children regularly get most—if not all—of their sleep during night hours before the school year even begins.”

With these data, researchers also looked at the regularity with which the children got at least 10 hours of sleep over 24 hours, instead of sleeping only at night. Getting 10 or more hours of sleep over the course of 24 hours did not have any influence on the child’s transition to kindergarten. The finding suggests that “making up” for less sleep at night by taking naps during the day does not have great value in helping children make the adjustment to school.

The American Academy of Sleep Medicine (AASM) recommends that kindergarten-aged children should get 10-13 hours of sleep across a 24-hour time period. However, the outcome of this study indicates that, for those children about to start formal schooling, those hours should be concentrated at nighttime to have the most effect on a child’s transition to and success in kindergarten.

For families anticipating their child starting kindergarten, Teti suggests setting routines and expectations for healthy sleep hygiene even before school starts.

“Sleep hygiene is the habits we adopt that influence how we sleep,” says Teti. “Good sleep hygiene for children should include organized and consistent bedtime routines, limited screen access, and a bedtime at or before 9PM.”

Teti recommends avoiding screen time, including TVs, video games, and tablets, at least 30 minutes before bedtime. He also recommends being involved and present during children’s bedtimes, implementing a consistent calming bedtime routine that helps prepare children for sleep. That routine could include bath time, reading a book, and talking in a quiet environment.

“Good sleep hygiene appears to be just as beneficial for young children as it is for adults. Establishing habits that lead to a good night’s sleep before the kindergarten year begins seems to give kids a leg up when making that transition to formal schooling. These are promising results, and we hope to test them further in a future family intervention study.”

Additional coauthors are from Clemson University and Penn State. The National Institutes of Health funded the work.

Source: Penn State



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