Group that will complete the structured and monitored physical exercise program.

Group that receives no intervention during the study.

12 weeks of physical exercise intervention, including aerobic snd anaerobic exercise at home. 36 sessions of monitorized training with distance supervision.

Functionality is the ability regarding basic physical and cognitive activities such as walking or reaching, focusing attention, and communicating, as well as the routine activities of daily living, including eating, bathing, dressing, transferring, and toileting; and life situations such as school or play for children and, for adults, work outside the home or maintaining a household. It will be measured by the London Chest Daily Activities scale.

Quality of life is a generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral, social environment as well as health and disease. It will be measured by the Short Form-36 quality of life assessment scale.

Tolerance to physical exercise is the exercise capacity of an individual as measured by endurance (maximal exercise duration and/or maximal attained work load) during an exercise test. It will be measured by the 6-minute walk test.