Michael Zweifel, MS, CSCS, is the owner and head of sports performance at Building Better Athletes in Dubuque, Iowa. He's worked with athletes from youth to pro in every sport imaginable. His work has appeared on EliteFTS, Breaking Muscle, STACK and the PTDC.
The hamstrings are essential to running fast. In my first article on high-speed hamstrings, we established the functions and key unique characters of the hamstring group during sport movement. Now [...]