Tottori College

Tottori, Japan

Tottori College

Tottori, Japan
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Hosomi R.,Tottori College | Fukunaga K.,Kansai University | Nishiyama T.,Kansai Medical University | Yoshida M.,Kansai University
Journal of Medicinal Food | Year: 2014

The purpose of this study was to elucidate the effects of dietary hemoglobin on serum and liver lipid contents in rats, and the ability of hemoglobin hydrolysates to disrupt lipid absorption. After rats had been fed on casein-or porcine hemoglobin-containing diets for 4 weeks, their serum and liver lipid contents and fecal cholesterol, bile acid, and nitrogen excretion were measured. To elucidate the mechanism of lipid absorption by dietary hemoglobin, we also examined lipase activity, micellar solubility of cholesterol, and bile acid binding activity in the presence of hemoglobin hydrolysates. Dietary hemoglobin decreased serum and liver triglyceride and cholesterol contents and increased fecal fatty acid, cholesterol, and bile acid excretion. In addition, hemoglobin hydrolysates inhibited lipase activity compared with casein hydrolysates in an in vitro study. These results suggested that the hypolipidemic effect of hemoglobin is mediated by increased fecal lipid excretion, and that decreased lipase activity by hemoglobin is at least partially responsible for this result. The observed effects were documented with an 8 g/kg hemoglobin diet, which is lower than in other studies; therefore. hemoglobin may be useful in the prevention of lifestyle-related diseases. © 2014, Mary Ann Liebert, Inc.

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 | Year: 2010

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.

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 | Year: 2014

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.

Hosomi R.,Tottori College
Global journal of health science | Year: 2012

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.

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 | Year: 2012

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.

Kawamura S.,Tottori College | Shimada H.,Kobe University
Proceedings of the 22nd International Conference on Computers in Education, ICCE 2014 | Year: 2014

This study developed the educational materials incorporating 3D images viewable with general application software. The material was the interactive PowerPoint slideshow to allow college students to study Japanese traditional buildings and their conservation independently. In the slideshow, students could explore different areas and watch 3D or 2D images with maps and text. Their impressions and watching behavior were documented to evaluate the impact of the slide show. The results indicated the increased availability of 3D images in the slideshow and the improved exploratory behavior of students to 3D images.

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 | Year: 2011

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.

Tani Y.,University of Tokyo | Asakura K.,University of Tokyo | Sasaki S.,University of Tokyo | Hirota N.,Matsumoto University | And 5 more authors.
European Journal of Clinical Nutrition | Year: 2015

Background/Objectives: To examine the influence of season and climate (air temperature and humidity) on water intake by the food group in a sample of free-living Japanese adults.Subjects/methods:Four-nonconsecutive-day, semi-weighed dietary records were collected from each of the four seasons in a single 12-month period (16 days in total). The influence of season and climate on individual water intake by the food group was analyzed using a mixed linear model. Participants were 242 healthy adults (121 women aged 30-69 years and 121 men aged 30-76 years) from four areas in Japan. Results: For women and men together, the mean total water intake was 2230 g/day (highest in summer: 2331 g/day; lowest in winter: 2134 g/day). Fifty-one percent of water was derived from foods and the rest from beverages. In a mixed linear model adjusted for sex, age and body mass index, intake of water from foods decreased by 3.1 g/day and that from beverages increased by 8.4 g/day, with an increase in the mean outdoor air temperature on the survey day of 1 °C (both P<0.0001). The influence of humidity was nonsignificant. Conclusions: In contrast to previous findings in Western countries, half of water intake in Japanese adults was derived from foods. Water intake from beverages was positively associated with air temperature, whereas that from foods was inversely associated with air temperature. © 2015 Macmillan Publishers Limited.

Fukumoto A.,University of Tokyo | Asakura K.,Keio University | Murakami K.,University of Tokyo | Sasaki S.,University of Tokyo | And 7 more authors.
Journal of Epidemiology | Year: 2013

Background: Information on within- and between-individual variation in energy and nutrient intake is critical for precisely estimating usual dietary intake; however, data from Japanese populations are limited. Methods: We used dietary records to examine within- and between-individual variation by age and sex in the intake of energy and 31 selected nutrients among Japanese adults. We also calculated the group size required to estimate mean intake for a group and number of days required both to rank individuals within a groupand to assess an individual's usual intake, all with appropriate arbitrary precision. A group of Japanese women (younger: 30-49 years, n = 58; older: 50-69 years, n = 63) and men(younger: 30-49 years, n = 54; older: 50-76 years, n = 67) completed dietary records for 4 nonconsecutive days in each season (16 days in total). Results: Coefficients of within-individual variation and between-individual variation were generally larger in the younger group than in the older group and in men as compared with women. The group size required to estimate a group's mean intake, and number of days required to assess an individual's usual intake, were generally larger for the younger group and for men. In general, a longer period was required to rank women and older adults. Conclusions: In a group of Japanese adults, coefficients of within-individual variation and between-individual variation,which were used to estimate the group size and number of records required for adequate dietary assessment, differed by age, sex, and nutrient.warranted in promoting physical activity in Nigeria. © 2013 Japan Epidemiological Association.

PubMed | University of Hyogo, Matsumoto University, Japan National Institute of Public Health, Osaka City University and 3 more.
Type: | Journal: Nutrition journal | Year: 2015

Simultaneous dietary achievement of a full set of nutritional recommendations is difficult. Diet optimization model using linear programming is a useful mathematical means of translating nutrient-based recommendations into realistic nutritionally-optimal food combinations incorporating local and culture-specific foods. We used this approach to explore optimal food intake patterns that meet the nutrient recommendations of the Dietary Reference Intakes (DRIs) while incorporating typical Japanese food selections.As observed intake values, we used the food and nutrient intake data of 92 women aged 31-69 years and 82 men aged 32-69 years living in three regions of Japan. Dietary data were collected with semi-weighed dietary record on four non-consecutive days in each season of the year (16 days total). The linear programming models were constructed to minimize the differences between observed and optimized food intake patterns while also meeting the DRIs for a set of 28 nutrients, setting energy equal to estimated requirements, and not exceeding typical quantities of each food consumed by each age (30-49 or 50-69 years) and gender group.We successfully developed mathematically optimized food intake patterns that met the DRIs for all 28 nutrients studied in each sex and age group. Achieving nutritional goals required minor modifications of existing diets in older groups, particularly women, while major modifications were required to increase intake of fruit and vegetables in younger groups of both sexes. Across all sex and age groups, optimized food intake patterns demanded greatly increased intake of whole grains and reduced-fat dairy products in place of intake of refined grains and full-fat dairy products. Salt intake goals were the most difficult to achieve, requiring marked reduction of salt-containing seasoning (65-80%) in all sex and age groups.Using a linear programming model, we identified optimal food intake patterns providing practical food choices and meeting nutritional recommendations for Japanese populations. Dietary modifications from current eating habits required to fulfil nutritional goals differed by age: more marked increases in food volume were required in younger groups.

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