Department of Nutrition and Dietetics, Istanbul Health and Technology University, Istanbul 34025, Turkey.
Department of Occupational Therapy, Istanbul Health and Technology University, Istanbul 34025, Turkey.
Int J Environ Res Public Health. 2022 Dec 11;19(24):16659. doi: 10.3390/ijerph192416659.
Branched-chain amino acids (BCAAs) are one of the most controversial ergogenic aids in terms of effectiveness and safety. This study aimed to evaluate the quality and reliability of BCAA supplements related to English videos on YouTube and to synthesize with the sentiment-emotion analysis of comments on videos. The content analysis of the information on videos was evaluated with the use of DISCERN, Journal of American Medical Association (JAMA) benchmark criteria, and Global Quality Score (GQS). In addition, word cloud and sentiment and emotional analysis of comments in videos were performed with the R package. As a result, the mean ± standard error values of DISCERN, JAMA, and GQS scores of all videos were 29.27 ± 1.97, 1.95 ± 0.12, and 2.13 ± 0.17, respectively. It was found that advertisement-free videos have a significantly higher DISCERN and GQS score than advertisement-included videos ( < 0.05). A moderately significant positive correlation was determined between DISCERN score of video content and the positive sentiment of video comments (rs: 0.400, = 0.002). In conclusion, it was determined that BCAA-related YouTube videos have mostly very poor quality in terms of content and that videos with higher quality may receive positive comments from viewers according to the DISCERN instrument.
支链氨基酸（BCAAs）在有效性和安全性方面是最具争议的运动补剂之一。本研究旨在评估与 YouTube 上英语视频相关的 BCAA 补充剂的质量和可靠性，并结合视频评论的情感分析进行综合评估。使用 DISCERN、美国医学会杂志（JAMA）基准标准和全球质量评分（GQS）评估视频信息的内容分析。此外，使用 R 包对视频中的词云以及评论的情感和情绪进行分析。结果，所有视频的 DISCERN、JAMA 和 GQS 评分的平均值±标准误差值分别为 29.27±1.97、1.95±0.12 和 2.13±0.17。发现无广告视频的 DISCERN 和 GQS 评分明显高于有广告视频（<0.05）。视频内容的 DISCERN 评分与视频评论的正面情绪之间存在中度显著正相关（rs：0.400，=0.002）。总之，根据 DISCERN 工具，确定与 BCAA 相关的 YouTube 视频在内容方面大多质量很差，而质量较高的视频可能会收到观众的正面评价。
