This study describes the development and initial psychometric evaluation of the Eating for Muscularity Scale (EMS), a measure of muscularity-oriented disordered eating (MDE) attitudes and behaviors. We conducted a literature review to define the construct of MDE and relevant subdomains. This review informed a large pool of items addressing these subdomains, which were then reduced based on feedback from subject-matter experts. Confirmatory factor analyses (CFA) were conducted to refine the measure and identify latent factors in 2 samples of participants recruited online. Preliminary psychometric evaluation of EMS items was conducted in a subset of the original sample (n = 266). CFA supported a 27-item short form of the measure. The EMS demonstrated high internal consistency (Cronbach's α = .95), moderate to strong concurrent validity with related measures (r = .43-.78), good construct validity using known-group assessment, and strong test-retest reliability (r = .90). These findings provide preliminary support for the EMS as a reliable and valid measure of MDE. The instrument has the potential to support future research to improve clinical understanding and assessment of MDE and its etiology, prevalence, and treatment outcomes. Further studies are required to evaluate the clinical and research utility of the scale. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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切丝：制定和验证一种针对肌肉性饮食失调的措施。

这项研究描述了“饮食肌肉量表”（EMS）的发展和初步的心理测量评估，该量表是针对肌肉性饮食失调（MDE）态度和行为的一种度量。我们进行了文献综述，以定义MDE和相关子域的构建。这项审查告知了涉及这些子域的大量项目，然后根据主题专家的反馈将其减少。进行了验证性因素分析（CFA），以完善该方法并确定2个在线招募参与者样本中的潜在因素。EMS项目的初步心理测量评估是在原始样本的子集中进行的（n = 266）。CFA支持该措施的27个项目的简短形式。EMS显示出很高的内部一致性（Cronbachα= 0.95），具有相关措施的中等到强同时效度（r = .43-.78），使用已知组评估的良好构架效度以及强的重测信度（r = .90）。这些发现为EMS作为MDE的可靠有效手段提供了初步支持。该仪器有可能支持未来的研究，以改善对MDE及其病因，患病率和治疗结果的临床理解和评估。需要进一步研究以评估该量表的临床和研究用途。（PsycINFO数据库记录（c）2020 APA，保留所有权利）。该仪器有可能支持未来的研究，以改善对MDE及其病因，患病率和治疗结果的临床理解和评估。需要进一步研究以评估该量表的临床和研究用途。（PsycINFO数据库记录（c）2020 APA，保留所有权利）。该仪器有可能支持未来的研究，以改善对MDE及其病因，患病率和治疗结果的临床理解和评估。需要进一步研究以评估该量表的临床和研究用途。（PsycINFO数据库记录（c）2020 APA，保留所有权利）。