Background Despite evidence that thinness and muscularity are part of the female body ideal, there is not yet a reliable figure rating scale measuring the body image of women which includes both of these dimensions. To overcome this shortcoming, the Body Image Matrix of Thinness and Muscularity - Female Bodies (BIMTM-FB) was developed. Methods The objective of this study is to analyze the psychometric properties of this measure. N = 607 non-clinical women and N = 32 women with eating disorders answered the BIMTM-FB as well as instruments assessing eating disorder symptoms and body image disturbance in order to test the convergent validity of the BIMTM-FB. To assess test-retest reliability, a two-week interval was determined. Results The results indicated that the body-fat dimension of the BIMTM-FB correlates significantly with the Contour Drawing Rating-Scale, the Drive for Leanness Scale (DLS) and the Body Appreciation Scale, while the muscularity dimension of the BIMTM-FB was significantly associated with the DLS and the Drive for Muscularity Scale, proving the convergent validity of the BIMTM-FB. High coefficients of test-retest reliability were found. Moreover, the BIMTM-FB differentiated between the clinical sample and the non-clinical controls. Conclusions The BIMTM-FB is a figure rating scale assessing both thinness and muscularity as part of the female body ideal. Due to its high reliability and validity, the BIMTM-FB can be recommended in research and practice.

中文翻译：

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瘦弱和肌肉发达的身体形象矩阵的开发和初步心理测量评估 - 女性身体

背景尽管有证据表明苗条和肌肉发达是女性理想身材的一部分，但目前还没有一个可靠的体形评定量表来衡量女性的身体形象，其中包括这两个维度。为了克服这一缺点，开发了“瘦肉肌肉身体图像矩阵 - 女性身体”(BIMTM-FB)。方法本研究的目的是分析该测量的心理测量特性。N = 607 名非临床女性和 N = 32 名饮食失调女性回答了 BIMTM-FB 以及评估饮食失调症状和身体形象障碍的工具，以测试 BIMTM-FB 的收敛有效性。为了评估重测的可靠性，确定了两周的间隔。结果 结果表明，BIMTM-FB 的体脂维度与轮廓绘图评定量表、瘦身动力量表 (DLS) 和身体欣赏量表显着相关，而 BIMTM-FB 的肌肉维度则显着相关。与 DLS 和肌肉驱动力量表相关联，证明了 BIMTM-FB 的收敛有效性。发现重测可靠性系数很高。此外，BIMTM-FB 可以区分临床样本和非临床对照。结论 BIMTM-FB 是一个身材评定量表，评估瘦弱和肌肉发达作为女性理想身体的一部分。由于BIMTM-FB具有较高的信度和效度，值得在研究和实践中推荐。