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Tottori, Japan

Kobayashi S.,University of Tokyo | Honda S.,University of Tokyo | Murakami K.,University of Tokyo | Sasaki S.,University of Tokyo | And 6 more authors.
Journal of Epidemiology

Background: A comprehensive self-administered diet history questionnaire (DHQ: 150-item semi-quantitative questionnaire) and a brief self-administered DHQ (BDHQ: 58-item fixed-portion-type questionnaire) were developed for assessing Japanese diets. We compared the relative validity of nutrient intake derived from DHQ with that from the BDHQ, using semi-weighed 16-day dietary records (DRs) as reference. Methods: Ninety-two Japanese women aged 31 to 69 years and 92 Japanese men aged 32 to 76 years completed a 4-nonconsecutive-day DR, a DHQ, and a BDHQ 4 times each (once per season) in 3 areas of Japan (Osaka, Nagano, and Tottori). Results: No significant differences were seen in estimates of energy-adjusted intakes of 42 selected nutrients (based on the residual method) between the 16-day DRs and the first DHQ (DHQ1) or between the DR and the first BDHQ (BDHQ1) for 18 (43%) and 14 (33%) nutrients, respectively, among women and for 4 (10%) and 21 (50%) nutrients among men. The median (interquartile range) Pearson correlation coefficients with the DR for energy-adjusted intakes of the 42 nutrients were 0.57 (0.50 to 0.64) for the DHQ1 and 0.54 (0.45 to 0.61) for the BDHQ1 in women; in men, the respective values were 0.50 (0.42 to 0.59) and 0.56 (0.41 to 0.63). Similar results were observed for the means of the 4 DHQs and BDHQs. Conclusions: The DHQ and BDHQ had satisfactory ranking ability for the energy-adjusted intakes of many nutrients among the present Japanese population, although these instruments were satisfactory in estimating mean values for only a small number of nutrients. © 2012 by the Japan Epidemiological Association. Source

Kobayashi S.,University of Tokyo | Murakami K.,University of Tokyo | Sasaki S.,University of Tokyo | Okubo H.,University of Tokyo | And 5 more authors.
Public Health Nutrition

Objective To compare the relative validity of food group intakes derived from a comprehensive self-administered diet history questionnaire (DHQ) and a brief-type DHQ (BDHQ) developed for the assessment of Japanese diets during the previous month using semi-weighed dietary records (DR) as a reference method.Design Between November 2002 and September 2003, a 4 d DR (covering four non-consecutive days), a DHQ (150-item semi-quantitative questionnaire) and a BDHQ (fifty-eight-item fixed-portion-type questionnaire) were completed four times (once per season) at 3-month intervals.Setting Three areas in Japan: Osaka, Nagano and Tottori.Subjects Ninety-two Japanese women aged 31-69 years and ninety-two Japanese men aged 32-76 years.Results Median food group intakes were estimated well for approximately half of the food groups. No statistically significant differences were noted between a 16 d DR and the first DHQ (DHQ1) or between the DR and the first BDHQ (BDHQ1) in fifteen (44 %) and fifteen (52 %) food items for women and in fourteen (41 %) and sixteen (55 %) food items for men, respectively, indicating that both questionnaires estimated median values reasonably well. Median Spearman's correlation coefficients with the DR were 0·43 (range: -0·09 to 0·77) for DHQ1 and 0·44 (range: 0·14 to 0·82) for BDHQ1 in women, with respective values of 0·44 (range: 0·08 to 0·87) and 0·48 (range: 0·22 to 0·83) in men, indicating reasonable ranking ability. Similar results were observed for mean values of the four DHQ and BDHQ.Conclusions In terms of food intake estimates, both the DHQ and the BDHQ showed reasonable validity. © 2011 The Authors. Source

Okubo H.,University of Tokyo | Okubo H.,Japan Society for the Promotion of Science | Murakami K.,University of Tokyo | Sasaki S.,University of Tokyo | And 5 more authors.
Public Health Nutrition

Objective Although dietary pattern approaches derived from dietary assessment questionnaires are widely used, only a few studies in Western countries have reported the validity of this approach. We examined the relative validity of dietary patterns derived from a self-administered diet history questionnaire (DHQ) among Japanese adults.Design The DHQ, assessing diet during the preceding month, and 4 d dietary records (DR) were collected in each season over one year. To derive dietary patterns, 145 food items in the DHQ and 1259 in the DR were classified into thirty-three predefined food groups, and entered into a factor analysis.Setting Three areas in Japan; Osaka (urban), Nagano (rural inland) and Tottori (rural coastal).Subjects A total of ninety-two Japanese women and ninety-two Japanese men aged 31-76 years.Results We identified three dietary patterns (healthy, Western and Japanese traditional) in women and two (healthy and Western) in men, which showed a relatively similar direction and magnitude of factor loadings of food groups across the first and mean of four DHQ (DHQ1 and mDHQ, respectively) and 16 d DR. The Pearson correlation coefficients between DHQ1 and 16 d DR for the healthy, Western and Japanese traditional patterns in women were 057, 036 and 044, and for the healthy and Western patterns in men were 062 and 056, respectively. When mDHQ was examined, the correlation coefficients improved for women (045-069).Conclusions Dietary patterns derived from the DHQ could be used for epidemiological studies as surrogates of those derived from DR. Copyright © 2010 The Authors. Source

Hosomi R.,Tottori College
Global journal of health science

In recent years, in developed countries and around the world, lifestyle-related diseases have become a serious problem. Numerous epidemiological studies and clinical trials have demonstrated that diet is one of the major factors that influences susceptibility to lifestyle-related diseases, especially the middle-senile state. Studies examining dietary habits have revealed the health benefits of seafood consumption. Seafood contains functional components that are not present in terrestrial organisms. These components include n-3-polyunsaturated fatty acids, such as eicosapentaenoic acid and docosahexsaenoic acid, which aid in the prevention of arteriosclerotic and thrombotic disease. In addition, seafood is a superior source of various nutrients, such as protein, amino acids, fiber, vitamins, and minerals. This review focuses on the components derived from seafood and examines the significant role they play in the maintenance and promotion of health. Source

Yamada M.,University of Tokyo | Asakura K.,University of Tokyo | Sasaki S.,University of Tokyo | Hirota N.,Matsumoto University | And 5 more authors.
Asia Pacific Journal of Clinical Nutrition

Data for the intake of copper, zinc, and manganese in Japanese populations obtained by detailed diet assessment methods and the most recent version of the food composition database in Japan are scarce. Moreover, data on food sources which contribute to the intake of these nutrients in Asian countries, including Japan, are not available. Here, we estimated copper, zinc, and manganese intake and elucidated major food sources of these nutrients in a Japanese population. We collected 16-day diet records from 225 adults aged 30 to 69 years living in 4 areas of Japan. Intakes of copper, zinc, and manganese were estimated using the 16-day diet records and the latest version of the Food Composition Tables in Japan. Mean intakes of copper, zinc, and manganese were 1.2 mg/day, 8.2 mg/day, and 4.9 mg/day for women and 1.4 mg/day, 10.1 mg/day, and 5.1 mg/day for men, respectively. White rice was the largest contributor to the intake of copper, zinc, and manganese, accounting for approximately 20%-30% of the total intake of each. Source

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