[in Japanese]

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【Aim】 The aim of this study was to determine the quality of life （QOL） in middle-aged and older men with exercise habits, and to clarify the relationship between the QOL and the Japanese dietary pattern. 【methods】 This study was a cross-sectional study. Fourteen male participants aged 50 years or older （mean age 60.5±9.5 years） who participated in masters track and field competitions were evaluated QOL （WHOQOL-OLD） and handgrip strength, and were conducted dietary survey. Japanese diet scores（JDI12, rJDI12） were calculated from the dietary survey results. Participants were divided into two groups based on median QOL. We compared 6-facets of the QOL, Japanese diet scores, nutrient intakes, and food group intakes between the two groups. 【Results】 Overall QOL scores （median （interquartile range）） were 3.7（3.4；3.8，n=7） for the low QOL group and 4.0（4.0；4.3，n=7） for the high QOL group. The low QOL group had lower DAD （dying and dying） scores p=0.017, effect size 0.60） and lower grip strength （p=0. 038，effect size 0. 51） than the high QOL group. There were no significant differences in either JDI12 or rJDI12 between the QOL groups, but fruits intake was significantly lower in low QOL group than high QOL group （p=0. 007，effect size 0. 66）. 【Conclusions】 There were differences in facets between the QOL groups. Maintaining muscle strength, and higher intake of fruits among the food groups that comprise the Japanese diet may contribute to maintain good QOL of middle-aged and older men with exercise habits.

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【Objective】　“The Japan Diet” is recommended by the Japan Atherosclerosis Society to prevent atherosclerotic diseases. Nutrition education for the Japanese younger generation is needed, given their inappropriate eating habits. Therefore, we designed the remote learning nutrition education program recommending “The Japan Diet” ，　studied its effects and identified issues requiring revision. 【Methods】 Thirty-four male employees of a trading company, 22-39 years of age, at risk of lifestyle-related disease development participated in remote nutrition education for 3 months. Online individual nutrition education was provided at baseline, after 4 and 8 weeks, with 3 months of follow-up. Participants were instructed to do daily self-monitoring of body weight and intakes of food groups comprising “The Japan Diet” using a spreadsheet application. Fasting anthropometric, blood pressure and blood biochemical parameters were measured, food frequency employing the Plus1Minus1 questionnaire, and dietary records, obtained photographically, were submitted at baseline and after 3 months. At the end of the intervention, participants filled out a questionnaire on the educational materials used for the online education including the application system and their understanding of　“The Japan Diet” ． 【Results】 The frequency of foods recommended for increased intake rose and foods to be avoid decreased （p<0.01） at 3 months as compared with baseline. Fatty meat and poultry intakes were reduced by half, while intakes of unrefined grains, green and yellow vegetables, soybean products, and fish doubled　（p<0.01）．Body weight, umbilical circumference, systolic blood pressure　（p<0.01），and blood lipids　（p<0.05） were reduced at 3 months compared with the baseline. The median frequencies of entering information in the self-monitoring spreadsheet were 4.3 and 4.9 times per week for body weight and each food group intakes, respectively, during the first 4 weeks, but then decreased during the intervention period. All participants answered that entering information on the self-monitoring sheet facilitated their practice of “The Japan Diet”　． 【Conclusion】 The information communication technology based on a remote nutrition education program for “The Japan Diet” intake was suggested to be useful for young Japanese people at risk of lifestyle-related diseases. However, the current program should be revised to be more efficient and practical for both participants and educators.

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