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Curr Hypertens Rev. 2019 Mar 18. doi: 10.2174/1573402115666190318125006. [Epub ahead of print]

Dietary Adherence, Self-Efficacy, and Health Behavior Change of WASHOKU-modified DASH Diet: A Sub-analysis of the DASH-JUMP Study.

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Department of Molecular Physiology and Medical Bioregulation, Yamaguchi University Graduate School of Medicine, Ube. Japan.
Faculty of Nursing Science, Yamanashi Prefectural University, Kouhu. Japan.
Center for Integrated Medical Research, Hiroshima University Hospital, Hiroshima. Japan.
Department of Food Science and Biotechnology, Faculty of Agriculture, Kagoshima University, Kagoshima. Jordan.
Central Research Institute, Maruha Nichiro Corporation, Tsukuba. Japan.



We previously reported the nutritional characteristics and effects of the DASH-JUMP diet, which is a WASHOKU-modified DASH diet, in Japanese participants with untreated high-normal blood pressure or stage 1 hypertension. The dietary adherence of the DASH diet in Japanese participants has never been evaluated before.


We aimed to assess the relationships between dietary adherence, self-efficacy, and health behavior change among study participants who received the DASH-JUMP diet by home delivery.


Participants were treated with the DASH-JUMP diet for 2 months and consumed their usual diets for the next 4 months. We conducted surveys using the stage of behavior change model questionnaire and the modified perceived health competence scale Japanese version questionnaire at baseline and 1, 2, 3, and 6 months to assess dietary adherence.


Forty-three participants (25 men, 18 women; mean age 53.6 ± 8.2 years) returned completed questionnaires, which we analyzed. Health behavior change was motivated by previous behavioral changes and improved biomarkers. The improvement and maintenance of self-efficacy were deeply related to health behavior change and previous self-efficacy. The experience of the DASH-JUMP study for participants included three processes to improve lifestyle habits: Phase 1, reflecting on previous lifestyle habits; Phase 2, learning through new experiences and the acquisition of knowledge; and Phase 3, desiring to maintain their own health.


It indicated that the DASH-JUMP diet significantly increased self-efficacy and promoted health behavior change.


DASH-JUMP; WASHOKU.; dietary adherence; health behavior change; self-efficacy

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