Association between objectively measured sleep timing and habitual dietary intake in university students A cross-sectional study

Takahiro Yoshizaki, Fumiharu Togo


Background Previous studies suggest that the forced changes in sleep timing and chronotype may be associated with dietary intake. However, no studies have examined associations between objectively measured sleep timing on weekdays and weekends and habitual dietary intake. This study aimed to investigate the associations among university students. Methods All the 35 healthy university students included in this study were asked to undertake a 7-day wrist activity recording, and to record the bedtimes and wake-up times. All the participants also completed a self-administered questionnaire during the recording period that included demographic characteristics, habitual dietary intakes, and morningness-eveningness. Dietary intakes over the previous 1 month were evaluated using a self-reported dietary history questionnaire (DHQ). The Japanese version of the Morningness-Eveningness Questionnaire (MEQ) was used to measure the self-rated morningness-eveningness. The score for adherence to the Japanese Food Guide Spinning Top (food guide score) was calculated from the results of the DHQ to assess the diet quality. Nocturnal sleep timing on each night was estimated from the recorded wrist activity. Results Multivariate linear regression sh...Continue Reading

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