Study Overview and Objectives The primary aim of this study was to investigate how acute fatigue induced by a sport-specific repeat sprint ability (RSA)  protocol affects neuromuscular performance in recreationally trained basketball players. Specifically, the researchers sought to measure changes in Countermovement Jump (CMJ)  and Drop Jump (DJ)  performance metrics immediately following fatigue and after a short recovery period. A secondary objective was to determine if an

Lucas Mason oversees strength and conditioning for 15 sports at LeTourneau University. He's the only full-time S&C coach. Here's how he makes the impossible math work.

The Gist:  A new study suggests the Countermovement Rebound Jump (CMRJ)  is a powerful tool for detecting fatigue in American Football players. By combining a standard jump with a reactive second hop, it captures neuromuscular fatigue faster than traditional methods. But for coaches of sports that don't involve regular jumping—like cycling, swimming, or distance running—there are some critical limitations to consider before adding this to your testing battery. What is the CMR