Effects of Hamstring Training in Different Modes on Stabilizing Knee Joints With Anterior Drawer Laxity

Question: To investigate how different modes of thigh muscles strengthening exercises emphasizing the knee internal rotators can be as effective as possible in improving the static stability and agility of the knees with anterior drawer laxity. Design: Randomized controlled clinical trial. Participants and Interventions: Young men with anterior drawer laxity of the knee were randomly assigned to three experimental groups in different strengthening modes: plate-loaded squat press (SP), plate-loaded kneeling leg curl with internal rotation (KLCIR), and kneeling leg curl (KLC). The control group with stable knees received no training. Outcome measures: static and dynamic knee stability, isokinetic strength. The purpose of this paper was to find out an optimal solution to the enhancement of the static and dynamic knee stability to a great extent. Key words: anterior cruciate ligament; agility; knee stability; hamstring; knee internal rotator