Movement:
From the start position, draw your belly button inward toward your spine. With one leg on the platform slowly straighten the leg to just short of full extension. To return to the start position, flex the knee to lower the weight stack, the hips should not rotate upward when the knee is flexed. How far the knee extends (returning to start position) will depend on individual control capabilities. Full extension is permissible when controlled. Due to the direction of resistance, beware of hyperextension of the knee. Check knee alignment, stabilize spine and repeat under control. Always be in complete control of resistance. You should be able to stop resistance at any time during the exercise. If stopping is not possible, decrease resistance.