The best way to work with clients – is to monitor kinetic chain checkpoints.What is checkpoints? It is observation every minute the feet, knees,lumbo-pelvic-hip complex, shoulders and head.For example,Karen,your clients would like to perform cardiorespiratory activity.What you have to watch? Only foot and knee alignment? – No! You have to monitor rounded shoulder your client, or forward head posture, watch for elevated and protracted shoulders and extended cervical spine.Yes, you have to mention for yourself that your clients have feet turn out or knees move inward,but this have to come in complex observation, not only observation your clients feet and knee.
With regards, Miroslava,
there exists an excellent article on that subject right here at IDEA by Justin Price: http://www.ideafit.com/fitness-library/foot-ankle-and-knee-0.
I hope you find it helpful.