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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Author(s): Atsuko Kawamura*, Junko Inagaki, Seiji Umemoto, Katsuko Kajiya, Hiroko Kishi, Makoto Mitarai, Hiroshi Oda, Sei Kobayashi.

Journal Name: Current Hypertension Reviews

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Abstract:

Background: 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.

Objective: 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.

Methods: 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.

Results: 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.

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

Keywords: DASH-JUMP, dietary adherence, health behavior change, self-efficacy, WASHOKU.

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(E-pub Ahead of Print)
DOI: 10.2174/1573402115666190318125006

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