Knight Emily, Intzandt Brittany, MacDougall Alicia, Saunders Travis J
University of Western Ontario, Health and Rehabilitation Sciences, London, ON, Canada.
Interact J Med Res. 2015 Jan 20;4(1):e3. doi: 10.2196/ijmr.3835.
The global prevalence of sedentary lifestyles is of grave concern for public health around the world. Moreover, the health risk of sedentary behaviors is of growing interest for researchers, clinicians, and the general public as evidence demonstrates that prolonged amounts of sedentary time increases risk for lifestyle-related diseases. There is a growing trend in the literature that reports how social media can facilitate knowledge sharing and collaboration. Social sites like YouTube facilitate the sharing of media content between users.
The purpose of this project was to identify sedentary behavior content on YouTube and describe features of this content that may impact the effectiveness of YouTube for knowledge translation.
YouTube was searched on a single day by 3 independent reviewers for evidence-based sedentary behavior content. Subjective data (eg, video purpose, source, and activity type portrayed) and objective data (eg, number of views, comments, shares, and length of the video) were collected from video.
In total, 106 videos met inclusion criteria. Videos were uploaded from 13 countries around the globe (ie, Australia, Barbados, Belgium, Canada, Colombia, Kenya, New Zealand, Russia, South Africa, Spain, Ukraine, United Kingdom, United States). The median video length was 3:00 minutes: interquartile range (IQR) 1:44-5:40. On average, videos had been on YouTube for 15.0 months (IQR 6.0-27.5) and had been viewed 239.0 times (IQR 44.5-917.5). Videos had remarkably low numbers of shares (median 0) and comments (median 1). Only 37.7% (40/106) of videos portrayed content on sedentary behaviors, while the remaining 66 videos portrayed physical activity or a mix of behaviors. Academic/health organizations (39.6%, 42/106) and individuals (38.7%, 41/106) were the most prevalent source of videos, and most videos (67.0%, 71/106) aimed to educate viewers about the topic.
This study explored sedentary behavior content available on YouTube. Findings demonstrate that there is confusion between physical activity and sedentary behaviors, that content is being uploaded to the site from around the globe, that content is primarily from health organizations and individuals with the purpose of educating fellow users, but that low views, comments, and shares suggest that sedentary behavior content is relatively underutilized on YouTube. Future research may wish to leverage social platforms, such as YouTube, to facilitate implementation and sharing of evidence-based sedentary behavior content.
全球久坐不动的生活方式的流行程度引起了世界各地对公众健康的严重关注。此外，久坐行为的健康风险越来越受到研究人员、临床医生和公众的关注，因为有证据表明，长时间久坐会增加患生活方式相关疾病的风险。文献中有一种越来越明显的趋势，即报告社交媒体如何促进知识共享与合作。像YouTube这样的社交网站方便了用户之间媒体内容的分享。
本项目旨在识别YouTube上关于久坐行为的内容，并描述该内容可能影响YouTube知识传播效果的特征。
3名独立评审员在同一天对YouTube进行搜索，以查找基于证据的久坐行为内容。从视频中收集主观数据（如视频目的、来源和所描绘的活动类型）和客观数据（如观看次数、评论数、分享数和视频时长）。
总共106个视频符合纳入标准。视频来自全球13个国家（即澳大利亚、巴巴多斯、比利时、加拿大、哥伦比亚、肯尼亚、新西兰、俄罗斯、南非、西班牙、乌克兰、英国、美国）。视频的中位数时长为3:00分钟：四分位间距（IQR）为1:44 - 5:40。平均而言，视频在YouTube上已存在15.0个月（IQR为6.0 - 27.5），观看次数为239.0次（IQR为44.5 - 917.5）。视频的分享数（中位数为0）和评论数（中位数为1）非常低。只有37.7%（40/106）的视频描绘了久坐行为的内容，其余66个视频描绘的是身体活动或多种行为的组合。学术/健康组织（39.6%，42/106）和个人（38.7%，41/106）是视频最主要的来源，大多数视频（67.0%，71/106）旨在就该主题对观众进行教育。
本研究探索了YouTube上可获取的久坐行为内容。研究结果表明，身体活动和久坐行为之间存在混淆，内容是从全球各地上传到该网站的，内容主要来自健康组织和个人，目的是教育其他用户，但观看量、评论数和分享数较低表明久坐行为内容在YouTube上的利用相对不足。未来的研究不妨利用YouTube等社交平台，促进基于证据的久坐行为内容的实施和分享。
