you will probably have to look more for things to avoid than to do. Any technique that places stress on the wrist in support of body weight is not a good idea. There is a link to a question just like yours in the context of Pilates http://www.pilatesconnections.com/index.php?/topic/1537-carpal-tunnel-sy… which may give you further insights.
Carpal Tunnel Syndrome usually requires treatment. I have recently attended a workshop where the presenter Dr. Oestmann who is a physical therapist related personal experience with Carpal Tunnel Syndrome. He was able to cancel a surgery after trying treatment with a K laser. By his account, this condition was completely cleared up after three sessions with that laser.
Good luck for your client.
According to my AFAA’s datebase’s, exercises in all fours position, wall push-ups, or flexed wrists during arm movements in the aerobic workout may initiate symptoms.Rubber tubing for upper body strenthening should be used with caution due to the tendency of students to “break” the alignment of their wrists with their forearms which could potentially exacerbate condition.
Continuous stretching of the wrist flexors can strengthen the tendons:
Kneel on the floor.
Flex both wrists and place the palm of each hand on the floor, shoulder-width apart.
Point the fingers toward the knees.
While keeping the elbows straight, lean backward (buttock to the heels),keeping the palms flat the floor.
The closer the hands are to the knees, the easier is to keep the backs of the hands touching the floor.
The following books may be helpful, too:
Baldwin K.Kinesiology for Personal Fitness Trainers,New York:McGraw-Hill,
Nieman D,ed. Exercise Testing and Prescription: A Health-Related Approach.New York:McGraw-Hill,2003.
Speak with her physical therapist to find out what is indicated and what is contraindicated.
Make sure you know the pathophysiology of carpal tunnel syndrome as well as what joint structures and nerves are involved with the condition.
When you understand this well you will be in a better position to choose exercises for your clients.