本研究旨在從性別角色壓力的觀點探討男同志的身體意象與心理健康的相關性，經由立意及滾雪球取樣進行網路問卷調查，獲得281名男同志之有效樣本，平均年齡為27.72歲。本研究以包含背景變項、身體意象、心理健康等部份之線上問卷作為研究工具，並進行描述統計、單因子變異數分析、積差相關、多元迴歸等統計分析。研究發現如下：（一）男同志對於自我身材的肥胖及肌肉特徵感到不滿意；（二）男同志高度經由重量訓練來鍛鍊肌肉，亦可能服用高蛋白補充品；（三）不同身材類型的男同志，對身材肥胖特徵的不滿意度具有差異；（四）男同志的肌肉不滿意度對肥胖不滿意度與心理健康之間具有調節效果。最後，本研究提出相關建議，供未來研究，以及健康促進教育及心理諮商等實務工作者參考。

The aim of the study was to investigate the relationship between body image and mental health among the gay men from the perspective of gender role strain. Via a online questionnaire survey, 281 gay men (in average age 27.72 years) was obtained by purposive and snowball sampling. Research instruments included Socio-demographic Variables, Body Image, and Mental Health. The collected data were analyzed with descriptive statistic, one-way ANOVA, Pearson Correlation, and multiple regression analysis. The findings were as follows: 1) gay men were dissatisfied with their body fat and muscularity; 2) gay men highly involved in weight training, and may take protein supplements; 3) there were differences on body dissatisfaction with body fat in terms of body size; 4) dissatisfaction with muscularity moderated the relationship between dissatisfaction with body fat and mental health. Based upon the results, some suggestions for health-promotion education and counseling were proposed. Directions for future research were also indicated.

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