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Analyses of mothers’ sleep logs in postpartum periods
Author(s) -
Horiuchi Shigeko,
Nishihara Kyoko
Publication year - 1999
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.1999.00519.x
Subject(s) - sleep (system call) , sleep patterns , postpartum period , sleep stages , psychology , rhythm , medicine , sleep onset , circadian rhythm , polysomnography , pregnancy , developmental psychology , insomnia , electroencephalography , psychiatry , endocrinology , biology , computer science , genetics , operating system
In order to investigate mothers’ sleep–wake patterns from five to 12 weeks in the postpartum period, we analyzed continuous sleep logs. Data for 341 days from seven mothers were analyzed for each postpartum week. There were significant differences in total sleep time and wake time at night. Wake time at night gradually decreased from the fifth to the twelfth week. These results from continuous sleep logs support the results of our previous polysomnographic findings based on intermittent measurements. A transition from interrupted sleep to non‐interrupted sleep was observed from the ninth to twelfth week of postpartum. The mothers’ sleep–wake patterns are discussed focusing on their relationships to the infants’ sleep–wake patterns and feeding rhythm.