Open and closed kinetic chain exercises are being used as knee rehabilitation regiments. These exercises are designed to strengthen the muscles around the knee in order to improve its stability. Following a knee injury and/or surgery, the patient is asked to perform an isometric contraction of the quadriceps as the very first task of the rehabilitation process. Co-contraction of the hamstrings may occur depending on the amount of quadriceps contraction and the angle of knee flexion at which this isometric contraction is performed. The purpose of this study is to determine the effects of the knee flexion angle and the quadriceps tension on the amount of hamstrings co-contraction that occurs during an isometric contraction of the quadriceps muscles.

This content is only available via PDF.
You do not currently have access to this content.