Participants were assigned to one of two groups: Group A which first follows a 12-week physical activity program, then undergoes usual care for 12 additional weeks, or Group B, which continues usual care for 12 weeks (control group) and then starts the physical activity program for 12 additional weeks. Quality of life (with questionnaires for 2 groups) , well-being, fatigue, physical capacity, leptin concentration, goal setting and level of physical activity are evaluated during this protocol.