 - Group 2 participants will first attend an orientation workshop and then start a long-term physical training program that will include components of balance, flexibility, muscle strengthening, and aerobic conditioning. During Phase 1, participants will attend three physical training sessions per week. During Phase 2, participants will have the option to continue the program in the location of their choice. Study staff will contact participants monthly by phone to discuss their progress. Participants may meet with the trainer on an as-needed basis for additional assistance with the program. They will also keep a log to track attendance and progress, and they will mail in the log monthly. 