Tai Chi Teacher and sometimes writer
Tai Chi for Arthritis was created by Dr. Paul Lam, a physician and tai chi master. Dr. Lam used Sun style tai chi as his basis, incorporating many qi gong principles (coordinated deep breathing and body movements). The resulting form has been endorsed by the Arthritis Foundations of the U.S. and Australia. Tai Chi for Arthritis 1 is easy to learn and a great place to start your tai chi practice--it can be done standing or seated. It increases agility, balance, strength, and coordination.
Tai Chi for Arthritis 2 adds a few somewhat more complex movements that emphasize the internal power of tai chi. Students find them intriguing, beautiful, and satisfying, and a great addition to the first half of the form.
When done together, parts 1 and 2 add up to about 40 movements (some longer, some shorter). Once learned, parts 1 and 2 take only about 4-5 minutes to complete.