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Do the Morningness-Eveningness Questionnaire and Munich ChronoType Questionnaire Change After Morning Light Treatment?

  • Author(s): Burgess, Helen J
  • Kikyo, Fumitaka
  • Valdespino-Hayden, Zerbrina
  • Rizvydeen, Muneer
  • Kimura, Momoko
  • Pollack, Mark H
  • Hobfoll, Stevan E
  • Rajan, Kumar B
  • Zalta, Alyson K
  • Burns, John W
  • et al.

Published Web Location

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6615569/
No data is associated with this publication.
Abstract

The Morningness-Eveningness Questionnaire (MEQ) and Munich ChronoType Questionnaire (MCTQ) are sometimes used to estimate circadian timing. However, it remains unclear if they can reflect a change in circadian timing after a light treatment. In this study, 31 participants (25-68 years) completed both questionnaires before and after a 13-28 day morning light treatment. The dim light melatonin onset (DLMO), a physiological marker of circadian timing, was also assessed in a subsample of 16 participants. The DLMO phase advanced on average by 47 minutes (p<0.001). The MEQ score increased by 1.8 points (p=0.046). The MSFsc measure derived from the MCTQ advanced by 8.7 minutes (p=0.17). The shift towards morningness observed in both questionnaires correlated with the phase advance observed in the DLMO (MEQ r=-0.46, p=0.036; MSFsc r=0.81, p<0.001). Results suggest that these circadian questionnaires can change in response to a light treatment, indicating they can reflect underlying changes in circadian timing.

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