Study: NCT03676790

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Group I
Description: Group I In the first month, continuous ultrasound was applied three times a week. In the second month, patients performed only exercise sessions three times a week. In the ultrasound treatment, the following parameters were used: frequency of 1 MHz, intensity of 1.5 W/cm2 (temporal and spatial mean SATA), duty cycle of 100%, with application time of 5 minutes on the medial side and 5 minutes on lateral side of knee.~Exercises~The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:~* 10 minutes warming-up (treadmill, ergometer bike or rowing machine);~* 30 minutes 2-3 sets with P-1, P-2 or P-3;~* 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Group II
Description: Group II In the first month, pulsed ultrasound was applied three times a week. In the second month, patients performed only exercise sessions three times a week. In the treatment with the US, the following parameters were used: 1 MHz frequency, 2.5 w / cm2 intensity (temporal and spatial mean SATA), pulsed mode (25%), 5 minutes on the medial side and 5 minutes on the lateral side of the knee.~Exercises~The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:~* 10 minutes warming-up (treadmill, ergometer bike or rowing machine);~* 30 minutes 2-3 sets with P-1, P-2 or P-3;~* 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Group III
Description: Group III In the first month, the continuous ultrasound was applied 3 times a week. In the second month, 3 times a week, the continuous ultrasound was applied associated with exercises. The parameters were used: frequency of 1 MHz, intensity of 1.5 w / cm2 (temporal and spatial mean SATA), continuous mode (100%), with application time of 5 minutes on the medial side and 5 minutes on lateral side of knee.~Exercises~The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:~* 10 minutes warming-up (treadmill, ergometer bike or rowing machine);~* 30 minutes 2-3 sets with P-1, P-2 or P-3;~* 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Group IV
Description: Group IV In the first month, the pulsed ultrasound was applied three times a week. In the second month, three times a week, the pulsed ultrasound associated with exercises was applied. In the treatment with the US, the following parameters were used: 1 MHz frequency, 2.5 w / cm2 intensity (temporal and spatial mean SATA), pulsed mode (25%), 5 minutes on the medial side and 5 Minutes on the lateral side of the knee.~Exercises~The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:~* 10 minutes warming-up (treadmill, ergometer bike or rowing machine);~* 30 minutes 2-3 sets with P-1, P-2 or P-3;~* 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).