Lim Tze Joo, Okine Richard Nii, Kershaw Jonathan C
Department of Public and Allied Health, Bowling Green State University, Bowling Green, OH 43403, USA.
Department of Mathematics and Statistics, Bowling Green State University, Bowling Green, OH 43403, USA.
Foods. 2021 Dec 19;10(12):3147. doi: 10.3390/foods10123147.
Previous plant-based diet (PBD) adoption strategies have primarily focused on health rather than environmental rationale and meat reduction rather than plant-based protein promotion. In this study, we explored the effect of a theory-informed text-message intervention on dietary intentions and behaviors in young adult omnivores and the potential explanatory role of PBD beliefs, subjective norm, self-efficacy, moral norm, and health and environmental values. Participants completed baseline questionnaires and reported dietary intake before being randomly assigned to receive 2-3 health- or environment-focused text messages per week for eight weeks and then repeated baseline assessments. Although we did not see significant changes in meat or plant protein intake, we did observe a marked decrease in intentions to consume animal protein and a marginal increase in fruit and vegetable consumption intention. We identified subjective norms, self-efficacy, and moral satisfaction as the strongest predictors of changes in intention to consume animal or plant protein. Although few group differences were observed, those receiving environment-focused text messages experienced a greater change in values and were more likely to increase vegetable intake. Messages that improve sustainability awareness and provide practical adoption strategies may be part of an effective strategy to influence PBD intake among young adults.
以往基于植物性饮食（PBD）的推广策略主要侧重于健康而非环境因素，强调减少肉类摄入而非促进植物性蛋白质的摄入。在本研究中，我们探讨了一种基于理论的短信干预对年轻成年杂食者饮食意图和行为的影响，以及PBD信念、主观规范、自我效能、道德规范以及健康和环境价值观的潜在解释作用。参与者在完成基线问卷并报告饮食摄入量后，被随机分配，每周接收2 - 3条以健康或环境为重点的短信，为期八周，之后重复进行基线评估。尽管我们没有观察到肉类或植物蛋白摄入量的显著变化，但我们确实观察到食用动物蛋白的意愿显著下降，而食用水果和蔬菜的意愿略有增加。我们确定主观规范、自我效能和道德满意度是食用动物或植物蛋白意愿变化的最强预测因素。尽管观察到的组间差异很少，但那些收到以环境为重点短信的人在价值观上有更大的变化，并且更有可能增加蔬菜摄入量。提高可持续性意识并提供实际采用策略的短信可能是影响年轻人PBD摄入量的有效策略的一部分。
