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Regularity of daily life in relation to personality, age, gender, sleep quality and circadian rhythmsA diary-like instrument to measure lifestyle regularity (the 'Social Rhythm Metric'-SRM) was given to 96 subjects (48 women, 48 men), 39 of whom repeated the study after at least one year, with additional objective measures of rest/activity. Lifestyle regularity as measured by the SRM related to age, morningness, subjective sleep quality and time-of-day variations in alertness, but not to gender, extroversion or neuroticism. Statistically significant test-retest correlations of about 0.4 emerged for SRM scores over the 12-30 month delay. Diary-based estimates of bedtime and waketime appeared fairly reliable. In a further study of healthy young men, 4 high SRM scorers ('regular') had a deeper nocturnal body temperature trough than 5 low SRM scorers ('irregular'), suggesting a better functioning circadian system in the 'regular' group.
Document ID
20040141734
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
Authors
Monk, T. H.
(University of Pittsburgh School of Medicine United States)
Petrie, S. R.
Hayes, A. J.
Kupfer, D. J.
Date Acquired
August 22, 2013
Publication Date
December 1, 1994
Publication Information
Publication: Journal of sleep research
Volume: 3
Issue: 4
ISSN: 0962-1105
Subject Category
Behavioral Sciences
Funding Number(s)
CONTRACT_GRANT: AGO6836
CONTRACT_GRANT: NAS9-18404
CONTRACT_GRANT: MH-30915
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Regulatory Physiology
Non-NASA Center

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