Changes in eccentric utilization ratio, reactive strength index and leg stiffness in highly trained sprinters between training phases

| Franjo Lovric

Michał P. Włodarczyka, Krzysztof Kusya, Jacek Zielińskiaa

Human Movement Laboratory “LABTHLETICS” at the Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, ul. Królowej Jadwigi 27/39, 61-871 Poznań, Poland