You
will also need to strengthen the hip extensors or the Hamstring group in the
back of the thigh. The Hamstrings work to bend the knee and to lift the leg
backward at the hip (hip extension). The best exercise to strengthen the
hamstrings are hip bridges.
Lie
on your back, knees bent with feet flat on the floor (like you're going to do
trunk curls). Tighten your abs and your gluteals (buttocks) and slowly lift your
hips off the floor attempting to make a straight line from your knees to your
chest. Do not lift with your back! The key to this exercise is to squeeze
your buttocks and back of thighs to lift your hips off the floor.
