Jung Mary E, Latimer-Cheung Amy E, Bourne Jessica E, Martin Ginis Kathleen A
School of Health and Exercise Sciences, University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC, V1V 1V7, Canada.
Queen's University, Kingston, ON, Canada.
Ann Behav Med. 2017 Feb;51(1):57-66. doi: 10.1007/s12160-016-9828-2.
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.
The 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.
Seven hundred and thirty-two individuals (463 women, 269 men; M = 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.
Calcium 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.
Taken 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.
30至50岁的北美人对乳制品的消费量一直在下降。有针对性的信息已被确定为一种具有成本效益的方法，可用于增加有益健康的行为，如乳制品摄入量。
本研究的目的是在一项随机对照试验中评估有针对性的、构建框架的、增强功效的信息对30至50岁成年人从乳制品中摄入钙的效用。
732人（463名女性，269名男性；平均年龄M = 40.57岁）被随机分配到五种信息条件之一：（1）获益框架（GF），（2）损失框架（LF），（3）自我调节功效增强（SRE），（4）GF加SRE（GF + SRE），或（5）LF加SRE（LF + SRE）。男性和女性的条件分开。每个条件连续四天收到一封电子邮件。在基线、干预后1周和4周测量从乳制品中摄入的钙、自我调节功效、结果期望和结果价值。
在所有条件下，从基线到干预后第1周，从乳制品中摄入的钙显著增加（p < 0.001）。显著的信息条件×时间交互作用（p = 0.04）表明，LF + SRE条件下的增加在第4周保持。干预后所有社会认知结构均增加（p < 0.01）。自我调节功效（β = 0.28，p < 0.01）和结果期望（β = 0.19，p < 0.01）是随后从乳制品中摄入钙（第4周）的显著预测因素。
综上所述，在开发行为改变干预材料时，确保信息内容针对特定人群的信念和动机似乎很重要。
