BACKGROUND The extent and implications of muscle building protein supplement use among adolescents is relatively unknown. This study aimed to describe the prevalence of protein powder, creatine, and anabolic steroid use in a sample of 14-16 year-old boys in Australia, and the predictors of actual use, and intentions to use protein powder. METHODS Data were obtained from questionnaires with Australian adolescent boys aged 14-16 years from one independent boy's school in Melbourne (N = 237). Hierarchical linear and logistic regressions were used to determine the predictors of intentions, and actual use of protein powder. RESULTS 49.8% of boys reported current use of, and 62% intended to use protein powder; 8.4% used creatine, and 4.2% used anabolic steroids. Higher levels of drive for muscularity, participation in weight training, and playing a greater number of sports were significant predictors of higher current use and intentions to use protein powder, but age, BMI, body esteem, and ethnicity were not. CONCLUSIONS Prevalence of muscle building supplement use was relatively high among this adolescent population. This research has implications for intervention and prevention programs to educate young boys about muscle building supplements to reduce negative physical and psychological health effects of their use.

中文翻译：

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在澳大利亚青春期男孩中使用肌肉增强剂：与身体形象，举重和体育锻炼的关系。

背景技术青少年中使用肌肉增强蛋白补充剂的程度和含义是相对未知的。这项研究旨在描述在澳大利亚的14至16岁男孩样本中蛋白质粉，肌酸和合成代谢类固醇的使用率，以及实际使用的预测因素和使用蛋白质粉的意图。方法数据来自对来自墨尔本一所独立男孩学校（N = 237）的14-16岁澳大利亚青少年男孩的问卷调查。分层线性和逻辑回归用于确定意图的预测指标和蛋白粉的实际使用情况。结果49.8％的男孩报告了目前的使用状况，而62％的人打算使用蛋白粉。8.4％使用肌酸，4.2％使用合成代谢类固醇。更高水平的肌肉运动，参与体重训练，进行更多的运动是经常使用蛋白质粉和使用蛋白质粉的重要预测因素，但年龄，BMI，身体自尊和种族却不行。结论在该青少年人群中，使用肌肉构建补充剂的患病率相对较高。这项研究对干预和预防计划产生了影响，该计划旨在教育年轻男孩关于补充肌肉的营养，以减少使用它们对身体和心理造成的负面健康影响。