Cheng Lanting, Xu Yinuo, Barnhart Wesley R, Gaggiano Christina M, Nagata Jason M, He Jinbo
Division of Applied Psychology, School of Humanities and Social Science, The Chinese University of Hong Kong, Shenzhen, Guangdong, China.
Department of Psychology, Bowling Green State University, Bowling Green, OH, USA; Department of Psychiatry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Body Image. 2024 Dec;51:101806. doi: 10.1016/j.bodyim.2024.101806. Epub 2024 Nov 6.
Prior research demonstrates positive associations between muscularity dissatisfaction and an array of negative health outcomes, including muscularity-oriented disordered eating, eating-related psychosocial impairment, and psychological distress. However, muscularity dissatisfaction differs by gender and is not always linked to these outcomes, indicating the existence of moderators of these associations. We proposed and examined muscularity bias internalization (MBI) as a moderator of these associations. The study included online samples of 450 Chinese men and 450 Chinese women who completed measures assessing MBI, muscularity dissatisfaction, muscularity-oriented disordered eating, eating-related psychosocial impairment, and psychological distress. Pearson correlation analyses examined the bivariate associations among study variables. Multiple linear regression analyses examined the moderating effects of MBI. Results revealed that both muscularity dissatisfaction and MBI were significantly and positively related to all outcome variables, except for a non-significant correlation between muscularity dissatisfaction and psychological distress in women. MBI was a significant moderator in men, not women, with muscularity dissatisfaction being more strongly and positively related to all outcome variables in men reporting higher MBI. Our study provides preliminary evidence supporting gender differences in the role of MBI in the associations of muscularity dissatisfaction with muscularity-oriented eating disorder psychopathology and psychosocial well-being.
先前的研究表明，肌肉发达程度不满意与一系列负面健康结果之间存在正相关，包括以肌肉发达为导向的饮食失调、与饮食相关的心理社会损害以及心理困扰。然而，肌肉发达程度不满意存在性别差异，并且并不总是与这些结果相关，这表明这些关联存在调节因素。我们提出并检验了肌肉发达偏见内化（MBI）作为这些关联的调节因素。该研究纳入了450名中国男性和450名中国女性的在线样本，他们完成了评估MBI、肌肉发达程度不满意、以肌肉发达为导向的饮食失调、与饮食相关的心理社会损害以及心理困扰的测量。皮尔逊相关分析检验了研究变量之间的双变量关联。多元线性回归分析检验了MBI的调节作用。结果显示，肌肉发达程度不满意和MBI均与所有结果变量显著正相关，但女性中肌肉发达程度不满意与心理困扰之间的相关性不显著。在男性中，MBI是一个显著的调节因素，而在女性中则不是，在报告较高MBI的男性中，肌肉发达程度不满意与所有结果变量之间的正相关更强。我们的研究提供了初步证据，支持MBI在肌肉发达程度不满意与以肌肉发达为导向的饮食失调心理病理学及心理社会幸福感关联中的作用存在性别差异。
