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Can a watch tell body clock time? Phase relationships between dim light melatonin onset and sleep markers determined from actigraphy, sleep diaries and the Munich Chronotype Questionnaire

journal contribution
posted on 02.12.2020, 00:00 by Andrew Reiter, Charli Sargent, Gregory Roach
Measurement of circadian phase (body clock timing) is often required for diagnosis and treatment of circadian rhythm disorders. However measurement of Dim Light Melatonin Onset (DLMO), the gold standard measure of circadian phase, is expensive and often impractical. As preferred timing of sleep reflects body clock timing, measurement of sleep markers provides a simple way to derive circadian phase. DLMO has been estimated from markers determined subjectively by questionnaires or sleep diaries; however actigraphy now provides the potential for objective and more accurate measurement of sleep markers. The aim of this study is to compare the phase differences between DLMO and sleep markers determined objectively by actigraphy, and subjectively by sleep diaries and the Munich ChronoType Questionnaire (MCTQ).

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

64

Issue

S1

Start Page

S317

End Page

S317

eISSN

1878-5506

ISSN

1389-9457

Publisher

Elsevier

Language

en

Peer Reviewed

Yes

Open Access

No

Author Research Institute

Appleton Institute

Era Eligible

No

Journal

Sleep Medicine

Exports