Table 2.

Description of the exercises for the graded activity group.

Exercise	Position	Sets/duration
Aerobic training on the treadmill	5-minute warm-up with speed of 5–8 km/h; 20-minute submaximal training at 70–80% maximum heart rate; 5-minute slow-down with gradual speed reduction.
Lower limbs strengthening	Exercise for the quadriceps in sitting position; Exercise for the hamstrings in standing position	3 sets of 12 repetitions for each limb Intervals between series of 30 s
Trunk strengthening	Exercises for the erector spinae in ventral decubitus: trunk extension.	3 sets of 10 repetitions Intervals between series of 30 s