Like all my clients, I spend a lot of time up front assessing each client in order to develop an appropriate training program. Often, joint mobility and stability is overlooked, and regularly trainers will simply stick an older client on a machine. This practice ignores the underlying issues and can cause more joint discomfort, rather than improve it. Once you have a good idea of a client's joint function, you can progress their training them along, and in no time they see huge results.
Listen to Judy's experience at HTS: