What one piece of equipment (i.e. total gym) would you recommend for purchase.
The TRX Suspension trainer is my recommendation for a total body workout. Seniors with arthritis just happens to be one population that benefits greatly from the unique qualities of the TRX.
TRX is an effective exercise tool for most body parts. It is safe and effective, even for people with multiple conditions, dysfunctions, and limitations. There are quite a few exercises that those with limited range of motion and functional deficits due to weakness can perform.