Hip muscle training.

* Tel.: þ1 31047 02909; fax: þ1 31047 03286. E-mail address: [email protected]. 1360-8592/$ see front matter a 2011 Elsevier Ltd. All rights reserved doi:10.1016/j.jbmt.2011.01.003 IO N e S leg, and the gluteus medius muscle, and one side and lateral trunk muscles (quadratus lumborum) on the opposite side, are controlling your posture. Isolated training of the gluteus medius muscle can be a first step in stabilizing a knee, hip, or back problem. The clam shell Lie on your side with knees bent; Place one hand on your pelvis (Figure 1a); Use a light band around your knees for resistance;