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Promoting Fruit and Vegetable Intake in Parents: A Cluster Randomised Controlled Trial

Author

Listed:
  • Yuying Sun

    (School of Public Health, The University of Hong Kong, Hong Kong, China)

  • Samantha S. W. Fung

    (School of Public Health, The University of Hong Kong, Hong Kong, China
    School of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hong Kong, China)

  • Patrick K. W. Man

    (Tung Wah Group of Hospitals, Hong Kong, China)

  • Alice N. T. Wan

    (School of Public Health, The University of Hong Kong, Hong Kong, China
    Aberdeen Kai-Fong Welfare Association Social Service Centre, Hong Kong, China)

  • Sunita Stewart

    (Department of Psychiatry, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA)

  • Tai Hing Lam

    (School of Public Health, The University of Hong Kong, Hong Kong, China)

  • Sai Yin Ho

    (School of Public Health, The University of Hong Kong, Hong Kong, China)

Abstract

We conducted a cluster randomised controlled trial of parents in 56 primary schools and community service centres (clusters) to evaluate the effectiveness of a single-session workshop on promoting more fruit and vegetable (FV) intake. A total of 803 parents were randomised to the FV intervention arm (16 clusters, n = 197), the more appreciation control arm (19 clusters, n = 270), or the less criticism control arm (21 clusters, n = 336). The FV intake of the FV arm was compared with that of the combined more appreciation or less criticism (MALC) arm. Both arms received a 2 h workshop: (i) the FV arm on increasing FV consumption and related food literacy; (ii) the MALC arm on increasing appreciation or reducing criticism of children. Primary outcomes were FV consumption per day in the past week assessed at baseline, 2-weeks, and 6-weeks. Secondary outcomes were behavioural determinants proposed by the Health Action Process Approach (HAPA), including outcome expectancies, self-efficacy, intention, and planning behaviour. The FV arm had a greater increase in FV consumption than the MALC arm, with large effect sizes ( d : 0.97–1.08) and improvements in behavioural determinants with small effect sizes at all time points ( d : 0.19–0.43). Our study was the first population-based randomised controlled trial to show that a brief, single 2 h HAPA-based workshop was effective in promoting fruit and vegetable intake in parents.

Suggested Citation

  • Yuying Sun & Samantha S. W. Fung & Patrick K. W. Man & Alice N. T. Wan & Sunita Stewart & Tai Hing Lam & Sai Yin Ho, 2021. "Promoting Fruit and Vegetable Intake in Parents: A Cluster Randomised Controlled Trial," IJERPH, MDPI, vol. 18(10), pages 1-12, May.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:10:p:5206-:d:554306
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    References listed on IDEAS

    as
    1. Lukas Schwingshackl & Georg Hoffmann & Tamara Kalle-Uhlmann & Maria Arregui & Brian Buijsse & Heiner Boeing, 2015. "Fruit and Vegetable Consumption and Changes in Anthropometric Variables in Adult Populations: A Systematic Review and Meta-Analysis of Prospective Cohort Studies," PLOS ONE, Public Library of Science, vol. 10(10), pages 1-19, October.
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