If you have spent any time in a high-performance weight room or a sports science lab, you know that vertical jump testing is a foundational staple for assessing an athlete's lower-body explosive power. The two most common tests used to measure this are the Countermovement Jump (CMJ) and the Squat Jump (SJ) . But what happens when you compare the data between the two? Enter the Eccentric Utilization Ratio (EUR) . For years, coaches have used the EUR to unlock the secrets of a

The training and development of elite sprinters require precise monitoring to ensure athletes are peaking at the right time. While practitioners use a variety of jump tests to assess power and stretch-shortening cycle (SSC) performance, there has been a notable lack of research tracking how these specific jump parameters change across different phases of an annual training cycle in highly trained sprinters. The researchers conducted this study to determine if variables like t

This exploratory study investigates whether the eccentric utilization ratio (EUR) —a common metric comparing countermovement jumps to squat jumps —is actually a reliable indicator of superior athletic ability. By analyzing data from over 300 athletes and students, researchers discovered a negative correlation between a high EUR and the rate of force development (RFD) during squat jumps. These results suggest that a high ratio may stems from a decreased ability to generat