@article{oai:toyama.repo.nii.ac.jp:00000864,
 author = {神川, 康子 and 森, 綾乃 and 野口, 公喜 and 戸田, 直宏},
 issue = {1},
 journal = {富山大学人間発達科学部紀要 = Memoirs of the Faculty of Human Development University of Toyama},
 month = {Oct},
 note = {application/pdf, As part of thet rials to improve living habits of children, we examined whether the use of dawn simulation can improve the difficulty of awakening and tiredness in the morning caused by late hours and sleep loss, based on an analysis of lifestyle and sleep records of elementary school students in fourth and fifth grades. The informed consent was obtained from 33 households in Toyama Prefecture to install a dawn simulation device in a child's bedroom. Recordings of their sleep and lifestyle were kept for more than 30 days from November to January when the hours of daylight are relatively short. Of those, 33 households, a total of 1105 days were analyzed. As a result, the children who woke using a dawn simulation (DS condition) went to bed and woke up significantly earlier both on weekdays and weekends than the children who woke without a dawn simulation (No DS condition).
Their sleeping hours extended on weekdays and shortened on weekends. There was a significant difference between two conditions in the mood upon awakening on weekdays.
While 35.0% of the children woke "comfortably" under the NoDS condition, the percentage of children waking "comfortably" rose to 58.6% under the DS condition. Further more, a significant difference was also noted in the power of concentration during the day on weekdays; while 44.3% of the children under the NoDS condition replied "I was able to concentrate very much," 64.3% of them under the DS condition replied the same. As for the daily mood, 84.6% of the children under the DS condition replied "I enjoyed the day," compared with 71.1% of them under the NoDS condition. The above results suggested the possibility that using dawn simulation can improve the sleeping habits of children and their quality of life upon waking and during the day., Article, 富山大学人間発達科学部紀要, 8巻1号, Page 129-135},
 pages = {129--135},
 title = {起床前漸増光が児童の睡眠と生活の質に与える影響},
 volume = {8},
 year = {2013}
}