title: Relationship between Self-Reported Dietary Nutrient Intake and Self-Reported Sleep Duration among Japanese Adults.
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.
authors.affiliation: Department of Somnology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. ykoma@tokyo-med.ac.jp.|Japan Somnology Center, Neuropsychiatric Research Institute, 1-24-10 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan. ykoma@tokyo-med.ac.jp.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Komada
authors.affiliation: Department of Somnology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. haji.nari@gmail.com.|Japan Somnology Center, Neuropsychiatric Research Institute, 1-24-10 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan. haji.nari@gmail.com.
authors.forename: Hajime
authors.initials: H
authors.lastname: Narisawa
authors.affiliation: Pharmaceutical and Healthcare Research Laboratories, FUJIFILM Corporation, 2-5-1 Suwa, Tama, Tokyo 206-0024, Japan. fumitaka.ueda@fujifilm.com.
authors.forename: Fumitaka
authors.initials: F
authors.lastname: Ueda
authors.affiliation: Pharmaceutical and Healthcare Research Laboratories, FUJIFILM Corporation, 2-5-1 Suwa, Tama, Tokyo 206-0024, Japan. hitomi.saito@fujifilm.com.
authors.forename: Hitomi
authors.initials: H
authors.lastname: Saito
authors.affiliation: Pharmaceutical and Healthcare Research Laboratories, FUJIFILM Corporation, 2-5-1 Suwa, Tama, Tokyo 206-0024, Japan. hiroyuki.sakaguchi@fujifilm.com.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Sakaguchi
authors.affiliation: Marketing Department, Maruha Nichiro Corporation, 3-2-20 Toyosu, Koto-ku, Tokyo 135-8608, Japan. m-mitarai@maruha-nichiro.co.jp.
authors.forename: Makoto
authors.initials: M
authors.lastname: Mitarai
authors.affiliation: Marketing Department, Maruha Nichiro Corporation, 3-2-20 Toyosu, Koto-ku, Tokyo 135-8608, Japan. ri-suzuki@maruha-nichiro.co.jp.
authors.forename: Rina
authors.initials: R
authors.lastname: Suzuki
authors.affiliation: Department of Somnology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. tamura65@tokyo-med.ac.jp.|Japan Somnology Center, Neuropsychiatric Research Institute, 1-24-10 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan. tamura65@tokyo-med.ac.jp.
authors.forename: Norihisa
authors.initials: N
authors.lastname: Tamura
authors.affiliation: Department of Preventive Medicine and Public Health, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. inoue@tokyo-med.ac.jp.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Inoue
authors.affiliation: Department of Somnology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. inoue@somnology.com.|Japan Somnology Center, Neuropsychiatric Research Institute, 1-24-10 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan. inoue@somnology.com.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Inoue
mesh_terms: D000328:Adult; D044466:Asian People; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D004032:Diet; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D004041:Dietary Fats / Q000008:administration & dosage; D004044:Dietary Proteins / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D018977:Micronutrients / Q000008:administration & dosage; D008875:Middle Aged; D015999:Multivariate Analysis; D015596:Nutrition Assessment; D012044:Regression Analysis; D057566:Self Report; D012890:Sleep; D011795:Surveys and Questionnaires
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins; D018977:Micronutrients
keywords: dietary nutrients; food; midpoint of sleep; nutrition; sleep duration