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Nutrients 2017, 9(2), 134; doi:10.3390/nu9020134

Relationship between Self-Reported Dietary Nutrient Intake and Self-Reported Sleep Duration among Japanese Adults

1
Department of Somnology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
2
Japan Somnology Center, Neuropsychiatric Research Institute, 1-24-10 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan
3
Pharmaceutical and Healthcare Research Laboratories, FUJIFILM Corporation, 2-5-1 Suwa, Tama, Tokyo 206-0024, Japan
4
Marketing Department, Maruha Nichiro Corporation, 3-2-20 Toyosu, Koto-ku, Tokyo 135-8608, Japan
5
Department of Preventive Medicine and Public Health, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
*
Author to whom correspondence should be addressed.
Received: 7 November 2016 / Revised: 19 January 2017 / Accepted: 8 February 2017 / Published: 13 February 2017
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Abstract

Several studies have reported that short sleep duration is a risk factor for obesity and metabolic disease. Moreover, both sleep duration and sleep timing might independently be associated with dietary nutrient intake. In this study, we investigated the associations between self-reported sleep duration and dietary nutrient intake, with and without adjustments for variations in sleep timing (i.e., the midpoint of sleep). We conducted a questionnaire survey, comprising a validated brief self-administered diet history questionnaire (BDHQ) and the Japanese version of the Pittsburgh Sleep Quality Index (PSQI) among 1902 healthy Japanese adults and found that the dietary intakes of several nutrients correlated with sleep duration among men regardless of adjustment for the midpoint of sleep. Particularly, (1) small but significant correlations were observed between sleep duration and the percentage of energy from protein, regardless of adjustment for the midpoint of sleep; (2) energy-adjusted intakes of sodium, vitamin D, and vitamin B12 also significantly correlated with sleep duration; and (3) intakes of bread, pulses, and fish and shellfish correlated with sleep duration. In contrast, no significant correlations were observed between sleep duration and dietary intakes among women. This study revealed that after controlling for the midpoint of sleep, sleep duration correlated significantly with the dietary intake of specific nutrients and foods in a population of Japanese men. View Full-Text
Keywords: sleep duration; midpoint of sleep; dietary nutrients; nutrition; food sleep duration; midpoint of sleep; dietary nutrients; nutrition; food
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Komada, Y.; Narisawa, H.; Ueda, F.; Saito, H.; Sakaguchi, H.; Mitarai, M.; Suzuki, R.; Tamura, N.; Inoue, S.; Inoue, Y. Relationship between Self-Reported Dietary Nutrient Intake and Self-Reported Sleep Duration among Japanese Adults. Nutrients 2017, 9, 134.

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