Respiratory muscle training: placebo General High Intensity Training (30 minutes in cycle ergometer) and placebo respiratory muscle training: This training group performed with the valve Orygen® uncharged (placebo effect). Performing 10 consecutive inspirations (5 series) two times a day during 3 weeks.

Respiratory muscle training: Inspiratory General Training (30 minutes in cycle ergometer) and high intensity inspiratory muscle training: The inspiratory training was conducted with the Orygen® valve. Inspiratory training load was defined as maximum and patient tolerance that would perform 10 consecutive inspirations (5 series) two times a day, during 3 weeks.

Respiratory muscle training: Inspiratory and expiratory General High Intensity Training (30 minutes in cycle ergometer) and inspiratory and expiratory training: The inspiratory and expiratory training was conducted with the Orygen® valve. Loading inspiratory and expiratory training was defined as maximum and patient tolerance. This was the optimal load that would allow the patient to perform 10 consecutive inspirations (5 sessions) 2 times a day,during 3 weeks.

General high-intensity training consists in maximum effort intervals of 30 seconds duration against an equivalent resistance 0.075 kg / kg of body mass followed by a recovery period of 4 minutes cycle ergometer; the total duration was 3 weeks. They were made in this regard, five weekly sessions of 30 minutes per session, Additionally, randomly, the patients were divided into one of 3 possible groups of respiratory training, which consisted of 5 sets of 10 full breaths (inspiration and expiration) in the morning and afternoon during 3 weeks.

Defined as the ability to make a maximum respiratory effort, it was assessed using the MicroRPM® device. This test is to generate the maximum inspiratory pressure (from residual volume) and expiratory (from total lung capacity) against a road or occluded team, performing the maneuver by keeping the mouth and nose occluded.