- Arm I (exercise and usual care): Patients receive usual care and are enrolled in an exercise and weight control program at Curves® fitness center. The Curves® program, which begins during the third week of study, uses aerobic activity and resistance training to reduce weight and increase strength and fitness. Patients exercise a minimum of 3 times per week, approximately 30 minutes every time, for up to 6 months in the absence of disease progression or unacceptable toxicity. Patients' physical activity is measured at baseline and at the 3- and 6-month follow-up visits.