Multidisciplinary Food and Health Laboratory (LABMAS), School of Applied Sciences, State University of Campinas (UNICAMP), Brazil.
Department of Psychology, University of Sheffield, UK.
Eat Behav. 2022 Apr;45:101634. doi: 10.1016/j.eatbeh.2022.101634. Epub 2022 May 6.
The Power of Food Scale (PFS) is a questionnaire for self-assessing the motivation to consume palatable foods, especially in environments where food is abundant and constantly available. This study aimed to a) assess the factorial structure of the PFS in a Brazilian sample and b) examine the relationship between the power of food and body image dissatisfaction and BMI. The PFS and Body Shape Questionnaire (BSQ) were applied to a sample of 300 adults. Data were analysed using confirmatory factor analysis. Composite reliability (CR) was used to verify factor reliability. A partial least squares structural equation model was used to verify the effect of the PFS score on body image dissatisfaction. The PFS had an adequate factorial structure in this Brazilian sample, showing three well-defined factors: food available (CR = 0.91), food tasted (CR = 0.84), and food present (CR = 0.87). The BSQ showed one reliable factor (CR = 0.97). The power of the food aggregate factor significantly predicted body mass index (β = 0.16; p = .01) and body image dissatisfaction (β = 0.46; p < .001). The effect size was small for body mass index (f = 0.02) and medium for body image dissatisfaction (f = 0.26). The food present factor also had a slightly higher average among the three PFS factors. Women had higher PFS scores than men. Understanding the role that this motivation plays in physical and psychological outcomes such as body dissatisfaction can contribute to developing treatment strategies and support health professionals' performance in clinical settings.
食物力量量表（PFS）是一种自我评估食用美味食物动机的问卷，尤其适用于食物丰富且随时可得的环境。本研究旨在：a）在巴西样本中评估 PFS 的因子结构；b）检验食物力量与身体意象不满和 BMI 之间的关系。PFS 和身体形态问卷（BSQ）应用于 300 名成年人样本。使用验证性因子分析对数据进行分析。综合可靠性（CR）用于验证因子可靠性。偏最小二乘结构方程模型用于验证 PFS 分数对身体意象不满的影响。PFS 在巴西样本中具有良好的因子结构，显示出三个定义明确的因素：可获得的食物（CR=0.91）、食物味道（CR=0.84）和食物存在（CR=0.87）。BSQ 显示出一个可靠的因素（CR=0.97）。食物总力量因子显著预测 BMI（β=0.16；p=0.01）和身体意象不满（β=0.46；p<0.001）。BMI 的效应大小较小（f=0.02），身体意象不满的效应大小中等（f=0.26）。在三个 PFS 因子中，食物存在因子的平均值也略高。女性的 PFS 得分高于男性。了解这种动机在身体和心理结果（如身体不满）中所起的作用，可以帮助制定治疗策略，并支持健康专业人员在临床环境中的表现。
