Measuring quality of sleep and autonomic nervous function in healthy Japanese women

The purpose of this study was to determine the relationship between quality of sleep and autonomic nervous functioning in healthy adult Japanese women using three measures, namely, the Pittsburgh Sleep Quality Index (PSQI) for subjective assessment of sleep quality, actigraphy for objective assessment of sleep, and heart rate variability using high frequency and low frequency domains. Participants were 31 healthy women in their 20s to 40s who met the selection criteria, including having normal monthly menstrual periods. Participants were categorized as good or poor sleepers according to their PSQI score. Median correlation coefficients of activity count and high frequency were −0.62 (range −0.43 to −0.84) for good sleepers and −0.45 (range 0.003 to −0.64) for poor sleepers. Good sleepers showed a significantly higher correlation of activity count and high frequency (Z=−2.11, P<0.05). Median correlation coefficients of activity count and low frequency/high frequency were 0.54 (range 0.29–0.73) for good sleepers and 0.41 (range 0.11–0.63) for poor sleepers. The PSQI, actigraphy data, and heart rate variability results showed positive correlations between sleep time as measured by PSQI and duration of inactivity as measured by actigraphy (r=0.446, P<0.05) and sleep time as measured by actigraphy (r=0.377, P<0.05), and a negative correlation between sleep time as measured by PSQI and the correlation coefficients of activity count and high frequency (r=−0.460, P<0.01). These results support the finding that sleep-wake rhythms can be monitored efficiently with actigraphy, providing accurate data that can support the diagnosis of sleeping disorders. Furthermore, actigraphy data were associated with heart rate variability and PSQI findings, but only in subjects who were poor sleepers. Actigraphy is an accurate, efficient, rapid, and inexpensive test for determining objective and subjective sleeping problems, and can also be used in clinical tests for sleep assessment.

内容要旨・審査要旨・論文本文の公開:
内容要旨 : LID201404221008.pdf
審査要旨 : LID201404221009.pdf
論文本文 : k2666_fulltext.pdf
本論文は，著者Miki Satoの学位論文として提出され，学位審査・授与の対象となっている。
著者の申請により要約(2014-04-22公開)に替えて論文全文を公開(2019-11-05)

© 2014 Sato et al.
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