https://www.japantimes.co.jp/sports/2019/02/10/sumo/former-yokozuna-kisenosato-reflects-end-career/#.XtxhcJ5Kjeo
https://english.kyodonews.net/news/2019/02/f33e30b8c374-sumo-ex-yokozuna-kisenosato-opens-up-about-injuries-anxieties-future.html
https://www.aspetar.com/journal/viewarticle.aspx?id=268#.XtxmgZ5Kjeo
https://www.nytimes.com/2001/01/23/sports/IHT-injuries-force-akebono-out-of-the-sumo-ring.html
https://tachiai.org/2019/12/21/quiz-yokozuna-performances-the-answers/
https://en.wikipedia.org/wiki/Chiyonoyama_Masanobu
https://www.nikkansports.com/battle/sumo/news/202006070000356.html
https://en.wikipedia.org/wiki/Kisenosato_Yutaka
https://www.youtube.com/watch?v=WgOrTbCSV4Y
https://www.japantimes.co.jp/sports/2019/05/16/sumo/sumo-101-injuries/#.Xt057y2z28g
https://bodyinbalance.com/856/muscular-injury-pain-muscle-healing/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6854976/
https://pdfs.semanticscholar.org/7f0c/c2bd8f0d82ba0e36d44f80bce2fcdc4ee153.pdf
https://www.hopkinsmedicine.org/health/wellness-and-prevention/muscle-pain-it-may-actually-be-your-fascia
https://www.sportsinjurybulletin.com/muscle-strain-injury-time-to-consider-the-fascia/
https://foothillsrehab.com/blog-how-long-will-it-take-for-my-injury-to-heal/
https://www.japantimes.co.jp/sports/2020/05/06/sumo/canceled-summer-bashos-rankings-will-likely-carry-july/#.Xt0ypC2z28g
https://www.japantimes.co.jp/sports/2017/11/01/sumo/sumo-needs-tackle-cause-rising-injuries/#.Xt0yjS2z28g