On this month's episode of the Mountain Land Running Medicine Podcast, we sit down with Dr. David Opar to discuss Hamstring Strain Injuries. Dr. Opar is the Director of the Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre at Australian Catholic University. He has conducted extensive research into hamstring strain injuries with a particular focus on how best to identify individuals at risk of this injury and how rehabilitation practices can be improved. From his research, he also co-invented the NordBord, which is a field measure of eccentric hamstring strength. More recently, Dr. Opar has joined and contributes to the NFL Lower Extremity Soft Tissue Injury Task Force.