- The interval physical training on the elliptical trainer (Kiko's® HM 6022, São Paulo, SP, Brazil) totalized 18 sessions that the individuals of both groups had to attend at least twice a week. Each session lasted not more than 60 minutes and they were all individual meetings. The minimal work rate of the equipment was 40W and the lower increment work rate was 10W. The elliptical trainer allowed combined exercise with the upper limb, however, in the present study, the exercise was performed with the arms fixed, and every participant's HR was monitored using a pulse frequency meter (Polar® FS2cTM Kempele, Finland), the pulse oxygen saturation (SpO2) using a pulse oximeter (Nonin®, model 8500A, Minneapolis, Mn, USA), the blood pressure (BP) using a mercury sphygmomanometer (Oxigel®, São Paulo, SP, Brazil) and the sensation of dyspnea and lower limb fatigue using the Modified Borg CR-10 Scale (BE-CR10). The elliptical exercise was an interval training and was based on studies that performed interval training exercise in cycle ergometer. This was a 30-minute exercise with a rest interval established in one minute. The exercise's work rateworkload was the maximal achieved in the CPT, and it was not modified until the sessions were finished The individuals who did not reach 40W in the CPT performed 30 seconds exercising periods at 40W with 1-minute resting interval. The volunteers who achieved workload equal or higher 40W performed 1-minute exercising periods at the workload achieved in the CPT with 1-minute resting interval. During the exercise on the equipment, the individuals should keep the speed between 40 and 50 rpm.Vital signs (HR, BP, SpO2) were recorded at the beginning and at the end of each session, as well as monitored before, during and after the elliptical exercise. During the training, the vital signs were recorded on the first 30 seconds of each resting interval.