Many exercise-based weight-loss interventions result in considerably less weight loss than predicted. One possible explanation could be that people have certain beliefs about the interplay of exercise and food that also influence their eating behavior, such as the belief that food is a reward for exercise. The current research outlines a systematic multiphase process to develop a psychometrically sound scale to assess these beliefs. In Study 1, regular exercisers (N = 520) completed an exploratory questionnaire on their beliefs related to diet and exercise. In Study 2 (N = 380), the factor structure of the newly developed scale was corroborated by confirmatory factor analysis. In addition, a test–retest (N = 166) was used to confirm reliability and stability. In sum, the Diet-Related Beliefs of Exercisers Scale with its four subscales (“Refrain from Eating,” “Food as Reward,” “Healthy Eating,” and “Nutritional Replenishment”) represents a valid and reliable measure of exercisers’ diet-related beliefs.

许多基于运动的减肥干预措施的减肥效果比预期的要少得多。一种可能的解释可能是人们对运动和食物的相互作用有一定的信念，这也会影响他们的饮食行为，例如相信食物是对运动的奖励。当前的研究概述了一个系统的多阶段过程，以开发一个心理测量学上合理的量表来评估这些信念。在研究 1 中，经常锻炼的人 ( N  = 520) 完成了一份关于他们与饮食和锻炼相关的信念的探索性问卷。在研究 2 ( N  = 380) 中，新开发的量表的因子结构通过验证性因子分析得到证实。此外，一个测试-再测试（N = 166) 用于确认可靠性和稳定性。总之，锻炼者饮食相关信念量表及其四个分量表（“克制饮食”、“食物奖励”、“健康饮食”和“营养补充”）代表了锻炼者饮食的有效且可靠的衡量标准——相关的信念。