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Sleeping pattern of kindergartners and nursery school children: function of daytime nap
Kazuhiko Fukuda1, Yukine Sakashita
1Department of Educational Psychology, Faculty of Education, Fukushima University, Japan. kfukuda@educ.fukushima-u.ac.jp
Insights
Afternoon naps in young children decrease with age and may delay nighttime sleep onset. This study examined children's sleep patterns and the impact of naps.
Area of Science:
- Child development
- Sleep science
- Pediatric health
Background:
- Childhood sleep patterns are crucial for development.
- Afternoon naps are common in Japanese nursery schools.
- Understanding nap function is important for pediatric sleep health.
Purpose of the Study:
- Investigate the sleeping patterns of children aged 3-6 years.
- Examine the function of afternoon naps in compensating for nighttime sleep insufficiency.
- Determine if afternoon naps delay subsequent nighttime sleep onset.
Main Methods:
- A questionnaire was administered to parents of 441 children (229 boys, 212 girls) aged 3-6.
- Sleep patterns, including nighttime sleep and daytime naps, were analyzed.
- Sleep duration and onset time were compared on days with and without afternoon naps.
Main Results:
- Daytime naps significantly decreased and nearly disappeared by age 6.
- Nursery school children had shorter nighttime sleep and later bedtimes than kindergartners.
- Afternoon naps were found to delay nighttime sleep onset but were not a result of sleep deficiency.
Conclusions:
- Childhood daytime napping habits decline significantly with age.
- Afternoon naps may negatively impact nighttime sleep onset timing.
- Further research is needed to optimize napping schedules for young children.
Abstract:
With a questionnaire answered by parents this study investigated the sleeping pattern of children attending kindergartens or nursery schools and the function of an afternoon nap. Sleeping pattern was investigated by a questionnaire with 441 young children (229 boys and 212 girls) attending kindergartens or nursery schools at the ages of 3 to 6 years old. Nighttime sleep did not show any significant change, while daytime naps decreased drastically and almost disappeared by the age of 6. Nursery school children went to bed later at night, so nighttime sleep was shorter than that of kindergartners. They also reported having more 'difficulty to fall asleep', more frequent 'staying-up at late night', less 'not getting enough sleep', worse 'mood at rising', and more 'unwillingness to go to their schools'. To investigate whether afternoon naps, which are routine at Japanese nursery schools, can compensate for sleep insufficiency on the previous night and whether they have the effect of delaying the onset of the subsequent nighttime sleep, we compared sleep duration on the previous night and the sleep onset time between the days with and without an afternoon nap. The afternoon nap appeared to cause delayed sleep onset but was not a result of sleep deficiency.
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