Muscle development
Conditions
Interventions
Participants will be randomized into two groups of 30 individuals: Blood Flow Restriction Group (BFRG) and Blood Flow Restriction Associated with Electrical Stimulation Group (BFRESG), totaling 60 par
Sponsors
Universidade Estadual Paulista Júlio de Mesquita Filho - Instituto de Biociências
Universidade Estadual Paulista
Eligibility
Age
18 Years to 45 Years
Inclusion criteria
Inclusion criteria: Will be included in the study participants of both sexes; aged between 18 and 45 years; physically active
Exclusion criteria
Exclusion criteria: Body Mass Index (BMI) above 30; alterations in sensibilities and mental disturbances that may alter the results or be harmful to the subject; risk factors for thromboembolism; who have a family history of deep vein thrombosis or pulmonary embolism; who have hypertension (blood pressure at rest > 140/90 mmHg)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Muscle thickness before and after the interventions will be evaluated by means of ultrasonography through the images that will be obtained through the GE Voluson I system (GE Healthcare, Zipf, Austria) in two-dimensional mode (B) with linear transducer. All muscle thickness measurements will be performed by a previously trained investigator. For the evaluation, participants will be positioned in dorsal decubitus to avoid hip rotation and both limbs, dominant and non-dominant, will be evaluated. To obtain the image, conductive gel will be used for better reproduction of the images and the measurement of the distance between the anterior superior iliac spine and the upper border of the patella will be standardized by means of a vertical line. Then, the rectus femoris and the vastus intermedius will be measured from 50% of this distance. | — |
Secondary
| Measure | Time frame |
|---|---|
| Muscle strength will be assessed using an isokinetic dynamometer. The participant will be seated, with hip and knee flexion of 90º and accommodated with inelastic bands to avoid compensations during the evaluation. The dynamometer axis will be positioned towards the lateral femoral condyle. The resistance pad will be fixed at the level of 3cm away from the malleolus medial. Isokinetic measurements will be performed under a concentric/concentric protocol to assess muscle performance at two angular velocities: 60º/s and 300º/s. Five movement practices will be performed without maximum strength for the volunteer to familiarize himself with the equipment; then, a verbal stimulus will be given so that maximum strength is performed during the test of five repetitions (60º/s), followed by fifteen repetitions of the second protocol (300º/s). There will be a 40 second rest interval between tests. The evaluation will be carried out bilaterally, with the dominant limb being evaluated first or the one that does not present any recent injury. The collected variables will be the peak torque, time of peak torque and power of the knee flexors | — |
Countries
Brazil
Contacts
Public ContactIsabela Soares
Universidade Estadual Paulista
Outcome results
None listed