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Psychosocial Determinants of Fruit and Vegetable Intake in Japanese Adolescents: A School-Based Study in Japan.


ABSTRACT: A few studies in Japan have demonstrated positive attitudes, self-efficacy, social support, and perceived barrier were associated with fruit and vegetable (F&V) intake in adults; however, limited evidence addresses the association of psychosocial factors with F&V intake in adolescents. A cross-sectional study through a questionnaire survey was conducted at junior and senior high schools, and 933 students completed the questionnaire. Data were analyzed by X2 test and Student t-test. The findings demonstrated 2.7% of participants were aware of the current recommendations for vegetable and 2.0% for fruit. Only 4% and 8.1% of participants reported they consumed recommended amount of vegetables and fruits. In comparison with males, females showed higher scores of attitude (p < 0.01), responsibility (p < 0.01), and social support (p < 0.01). The barriers to vegetable intake were "I'm eating enough now", "not always available when eating away from home"; the barriers to fruit intake were "don't have a habit of having 100% juice or fruit in the morning", and "cost too much". The findings suggest the change of adolescents' knowledge about what they should eat is needed in boosting F&V consumption. The development of an intervention program for adolescents needs to target socio-environmental factors such as family support, and nutritional education for early healthy habit formation.

SUBMITTER: Sato Y 

PROVIDER: S-EPMC7432351 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Psychosocial Determinants of Fruit and Vegetable Intake in Japanese Adolescents: A School-Based Study in Japan.

Sato Yoshiko Y   Miyanaga Masamitsu M   Wang Da-Hong DH  

International journal of environmental research and public health 20200731 15


A few studies in Japan have demonstrated positive attitudes, self-efficacy, social support, and perceived barrier were associated with fruit and vegetable (F&V) intake in adults; however, limited evidence addresses the association of psychosocial factors with F&V intake in adolescents. A cross-sectional study through a questionnaire survey was conducted at junior and senior high schools, and 933 students completed the questionnaire. Data were analyzed by X<sup>2</sup> test and Student <i>t</i>-t  ...[more]

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