Title:Dietary Adherence, Self-Efficacy, and Health Behavior Change of WASHOKU-Modified DASH Diet: A Sub-analysis of the DASH-JUMP Study
VOLUME: 16 ISSUE: 2
Author(s):Atsuko Kawamura*, Junko Inagaki , Seiji Umemoto, Katsuko Kajiya , Hiroko Kishi, Makoto Mitarai, Hiroshi Oda and Sei Kobayashi
Affiliation:Department of Molecular Physiology and Medical Bioregulation, Yamaguchi University Graduate School of Medicine, Ube, Faculty of Nursing Science, Yamanashi Prefectural University, Kouhu, Center for Integrated Medical Research, Hiroshima University Hospital, Hiroshima, Department of Food Science and Biotechnology, Faculty of Agriculture, Kagoshima University, Kagoshima, Department of Molecular Physiology and Medical Bioregulation, Yamaguchi University Graduate School of Medicine, Ube, Central Research Institute, Maruha Nichiro Corporation, Tsukuba, Department of Molecular Physiology and Medical Bioregulation, Yamaguchi University Graduate School of Medicine, Ube, Department of Molecular Physiology and Medical Bioregulation, Yamaguchi University Graduate School of Medicine, Ube
Keywords:DASH-JUMP, dietary adherence, health behavior change, self-efficacy, WASHOKU, DASH diet.
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.