They then completed a 12-week eccentric calf exercise programme on one leg and were re-tested [Alfredson, 1998]. The test protocol used speeds of 90°/s concentrically and 90°/s eccentrically, ...

Methods: In this prospective study, athletes (mean age 25 years) with jumper’s knee were randomised to treatment with either painful eccentric or painful concentric quadriceps training on a decline ...