Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA 24061, USA.
J Nutr Educ Behav. 2012 Mar-Apr;44(2):172-7. doi: 10.1016/j.jneb.2011.06.010. Epub 2011 Dec 8.
To describe sugar-sweetened beverage (SSB) consumption and to establish psychometric properties and utility of a Theory of Planned Behavior (TPB) instrument for SSB consumption.
This cross-sectional survey included 119 southwest Virginia participants. Most of the respondents were female (66%), white (89%), and had at least a high school education (79%), and their average age was 41.4 ± 13.5 years. A validated beverage questionnaire was used to measure SSB. Eleven TPB constructs were assessed with a 56-item instrument. Analyses included descriptive statistics, 1-way ANOVA, Cronbach α, and multiple regression.
Sugar-sweetened beverage intake averaged 457 ± 430 kcal/d. The TPB model provided a moderate explanation of SSB intake (R(2) = 0.38; F = 13.10, P < .01). Behavioral intentions had the strongest relationships with SSB consumption, followed by attitudes, perceived behavioral control, and subjective norms. The 6 belief constructs did not predict significant variance in the models.
Future efforts to comprehensively develop and implement interventions guided by the TPB hold promise for reducing SSB intake.
描述含糖饮料（SSB）的消费情况，并建立用于 SSB 消费的计划行为理论（TPB）工具的心理计量学特性和效用。
本横断面调查包括 119 名弗吉尼亚州西南部的参与者。大多数受访者为女性（66%）、白人（89%），且至少受过高中教育（79%），平均年龄为 41.4±13.5 岁。采用经过验证的饮料问卷来测量 SSB。使用包含 56 个项目的工具来评估 11 个 TPB 结构。分析包括描述性统计、单因素方差分析、克朗巴赫 α 以及多元回归。
SSB 摄入量平均为 457±430 kcal/d。TPB 模型对 SSB 摄入量提供了中等程度的解释（R²=0.38；F=13.10，P<.01）。行为意向与 SSB 消费之间的关系最强，其次是态度、感知行为控制和主观规范。6 个信念结构并不能预测模型中的显著差异。
未来根据 TPB 全面开发和实施干预措施，有望减少 SSB 的摄入量。
