The Use of Targeted, Framed, Efficacy Enhancing Messages for Increasing Dairy Consumption in Adults Aged 30-50: A Randomized Controlled Trial

Mary Jung, Amy Latimer-Cheung, Jessica Bourne, Kathleen Martin Ginis

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

Background: Dairy consumption amongst North Americans aged 30–50 has been declining. Targeted messages have been identified as a cost-efficient method through which to increase health-enhancing behavior, such as dairy intake.PurposeThe aim of this study is to assess the utility of targeted, framed, efficacy-enhancing messages on calcium consumption from dairy in adults aged 30–50 in a randomized controlled trial.MethodSeven hundred and thirty-two individuals (463 women, 269 men; Mage = 40.57 years) were randomly assigned to one of five message conditions: (1) gain-framed (GF), (2) loss-framed (LF), (3) self-regulatory efficacy-enhancing (SRE), (4) GF plus SRE (GF + SRE), or (5) LF plus SRE (LF + SRE). Conditions were separate for men and women. Each condition received an emailed message on four consecutive days. Calcium intake from dairy, self-regulatory efficacy, outcome expectations, and outcome value were measured at baseline, 1 and 4 weeks following the intervention.ResultsCalcium intake from dairy significantly increased from baseline to week 1 post-intervention in all conditions (p < .001). A significant message condition x time interaction (p = .04) revealed that increases seen in the LF + SRE condition were maintained at week 4. All social cognitive constructs increased following the intervention (ps < .01). Self-regulatory efficacy (β = .28, p < .01) and outcome expectations (β = .19, p < .01) were significant predictors of subsequent calcium intake (week 4) from dairy.ConclusionTaken together, it appears as though ensuring message content is targeted to the specific population’s beliefs and motives is of importance when developing behavioral change intervention material.
Original languageEnglish
Pages (from-to)57-66
Number of pages10
JournalAnnals of Behavioral Medicine
Volume51
Issue number1
Early online date28 Oct 2016
DOIs
Publication statusPublished - 1 Feb 2017

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