摘要：Abstract“The Basic Law on Shokuiku (Food Education)” (Shokuiku Kihon Hou) was enacted in 2005 in Japan. First, we examined the relationship of Na/K ratio in the first morning spot urine (SU) with the ratio of 24-hour urine (24U) samples from 54 elementary school children, and confirmed Na/K ratios in the SU and the 24-U samples were correlated significantly. Next, we conducted 6 times the variety of Food Education Program (FEP), to encourage 34 boys and girls aged 7 to 12 to eat more Japanese traditional food items such as soy, sesame, seaweed, vegetable, fish, mushroom and potato, daily. And we checked the change of sodium (Na) / potassium (K) of SU samples collected 3 times before, after and in the midst of FEP to investigate the effect of FEP on Na/K of morning SU in elementary school children. The Na/K was decreased significantly in the 2nd and the 3rd SU from the baseline level. We confirmed the FEP's effect on the children's dietary behaviour not only from the questionnaire but also from the significant changes in Na/K of SU. In conclusions, the FEP collecting SU samples to check Na/K is expected to be a good method to estimate the effect of FEP on dietary behaviour.
关键词：Food Education Program(FEP);School children;Morning spot urine;24-hour urine;Sodium to potassium ratio
