Body image is a multidimensional construct encompassing how we perceive, think, feel, and act toward our bodies and lies on a continuum from healthy body perceptions to unhealthy body perceptions. Previous researches suggest that adolescent girls experience higher levels of body dissatisfaction than do their male counterparts. Therefore, the aim of this research was to investigate on gender differences concerning the perceived body dissatisfaction and uneasiness by adolescents and the role played by the physical education in the process of positive development of the mental representation of the corporeity. 100 students (14-15 years) participated voluntarily in the study and were assigned to trained group (n = 50; 25M, 25F) regularly practicing sports outside the school hours, or untrained group (n = 50; 25M, 25F) did not practice any extracurricular physical activity in the period before the study. After anthropometric measurements (BMI), two standardized psychological tests to assess the degree of personal satisfaction towards their body were administered (i.e., Body uneasiness test (BUT) and contour drawing rating scale (CDRS)). BUT and CDRS scores were significantly lower for total trained group and trained females (p < 0.05). Also, total trained group and males and females trained showed a significant lower BMI (p < 0.05), whereas no significant difference was observed between the untrained and trained males for BUT and CDRS. Findings showed a better body-size perception and a smaller body uneasiness by trained adolescents. Moreover, girls showed anyway a greater dissatisfaction and uneasiness with the external appearance compared to their male counterpart.

中文翻译：

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身体形象不满意的性别差异：体育和运动的作用

身体意象是一个多维结构，包括我们如何感知、思考、感受和对我们的身体采取行动，它是从健康的身体知觉到不健康的身体知觉的连续统一体。先前的研究表明，青春期女孩比男性对身体的不满程度更高。因此，本研究的目的是调查青少年在感知身体不满和不安方面的性别差异，以及体育在身体心理表征积极发展过程中的作用。100 名学生（14-15 岁）自愿参与研究，并被分配到训练组（n = 50；25M、25F）在课外定期进行体育锻炼，或未训练组（n = 50；25M，25F) 在研究之前没有进行任何课外体育活动。在人体测量 (BMI) 之后，进行了两个标准化的心理测试，以评估个人对其身体的满意程度（即，身体不安测试 (BUT) 和轮廓绘制评分量表 (CDRS)）。BUT 和 CDRS 得分显着低于所有受过训练的组和受过训练的女性 (p < 0.05)。此外，受过训练的总组和受过训练的男性和女性显示出显着较低的 BMI（p < 0.05），而未受过训练和受过训练的男性之间在 BUT 和 CDRS 方面没有观察到显着差异。结果表明，受过训练的青少年对身体大小的感知更好，身体不适感更小。而且，