Yas Parr is a Strength Coach with a Bachelor of Science in Sports Performance. He is a former teacher at the Poliquin Group and was responsible for delivering the world renown Poliquin International Certification Program for many years. Yas works with professional fighters across a number of different sports. He is also the author of 'Strength & Conditioning For Combat Sports' which you can find on the Amazon link below.
https://www.amazon.com/Strength-Conditioning-Combat-Sports-Darren-ebook/dp/B078HNV3CZ