Full text is available at the source.
Do the Morningness-Eveningness questionnaire and Munich ChronoType questionnaire change after morning light treatment?
Do Morning and Evening Preference Scores Change After Morning Light Treatment?
AI simplified
Abstract
The dim light melatonin onset (DLMO) phase advanced on average by 47 minutes following a light treatment.
- The Morningness-Eveningness Questionnaire (MEQ) score increased by 1.8 points after the treatment.
- The Munich ChronoType Questionnaire (MCTQ) measure, MSFsc, advanced by 8.7 minutes, though this change was not statistically significant (p=0.17).
- A correlation was found between the increase in MEQ scores and the DLMO phase advance (MEQ r=-0.46, p=0.036).
- A strong correlation was observed between the MSFsc measure and the DLMO advance (MSFsc r=0.81, p<0.001).
- Results indicate that the MEQ and MCTQ can reflect changes in circadian timing after light treatment.
AI simplified