Pilot Study to Examine Blood Pressure Improvement Effects of DASH Diet Boxed Meals

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  • Yamamoto Ai
    Department of Nutrition, Faculty of Home Economics, Kyushu Women’s University
  • Shintomi Tamaki
    Department of Nutrition, Faculty of Home Economics, Kyushu Women’s University
  • Motoi Sayaka
    Maruha Nichiro Corporation
  • Miura Koshiro
    Department of Nutrition, Faculty of Home Economics, Kyushu Women’s University
  • Tomoe Miki
    Department of Nutrition, Faculty of Home Economics, Kyushu Women’s University

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Other Title
  • DASH食弁当の血圧改善効果検証のためのパイロット研究
  • DASHショク ベントウ ノ ケツアツ カイゼン コウカ ケンショウ ノ タメ ノ パイロット ケンキュウ

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<p>Objective: Participants were divided into two groups. To evaluate the effect of the boxed meals on blood pressure, one group was given a DASH diet boxed meal once a day and the other group twice a day (both with ordinary meals taken in the remaining mealtimes). We also analyzed energy and nutrient intake and blood biochemical test results to identify factors contributing to blood pressure improvement effects from the meal.</p><p>Methods: This was an intervention study without a control. Thirty-one participants took either one or two DASH diet boxed meals per day for 12 weeks, from September to November 2014. Physical examinations, blood pressure measurements, calculations of nutrient intake, and blood biochemical analyses were performed before, during, and after the intervention.</p><p>Results: Although there was a tendency for blood pressure to decrease during the DASH diet boxed meals intake period, no statistically significant difference was found in either group after the intervention. However, serum potassium concentration was increased. Only during the intervention were lipids and saturated fatty acids in both groups within the estimated average requirement (EAR). While intake of potassium, calcium, and magnesium increased during the intervention in both groups, potassium intake reached the EAR and intake of calcium and magnesium exceeded the "recommended dietary allowance" only in the group taking the boxed meal twice daily.</p><p>Conclusions: In order to verify the blood pressure improvement effects of DASH diet boxed meals, it is necessary to examine with a sufficient sample size.</p>

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