Effectiveness of NMES Associated to Vascular Occlusion in Functional Performance and Muscle Hypertrophy in Athlete's

NCT ID: NCT02406339

Last Updated: 2017-07-21

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 45 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-07-31
• Study Completion Date: 2017-05-31

Brief Summary

This study evaluates the effect of training with neuromuscular electrical stimulation (NMES) associated with vascular occlusion of the lower limbs, for increased strength and hypertrophy of the quadriceps muscle of professional basketball athletes.

Detailed Description

The pre-season preparation is seen as vital to maximize sports performance. However, there has been much debate on what the best strategy to prepare for use. Basketball is a sports activity of high intensity and volume of jumps, which are generally likely to cause injuries resulting from muscle imbalance and dynamic overload. Primarily in activities with eccentric contraction of the knee extensor muscles. A means of preventing injuries and optimization of sports performance is through strength training. Neuromuscular electrical stimulation (NMES) has been a physical therapy effective in increasing the recruitment of muscle fibers and strength. Another method that has been shown effective in increasing strength and muscle hypertrophy is the association of low intensity training and peripheral vascular occlusion. Therefore, the purpose of this study is to evaluate the effectiveness of neuromuscular electrical stimulation associated to vascular occlusion of lower limb muscle recruitment, strength and muscle hypertrophy. This will be met recruited basketball athletes of high performance, the males, aged between 18 and 30 years and BMI between 20 and 24 Kg/m2. The athletes will be randomized into four groups: group control (n = 15), group electrotherapy (n = 15) and group electrotherapy + vascular occlusion (n = 15). Will be carried out 12 sessions of treatment during the pre-season, and the volunteers evaluated before and after the pre-season and in middle the season, through the following instruments: Isokinetic Dynamometer, Surface Electromyography, Force Platform, Cross Section Area of Muscle, Vertical Jump, Functional Evaluation (Jump, Agility and Balance), Infrared Thermography and Numeric Scale of Pain Evaluation. For data analysis, normality test is used to verify the data distribution and consistent statistical test for the appropriate comparisons within and between groups, and thus considered two factors in the comparisons, time and group. Will adopt a significance level of 5%.

Conditions

Electric Stimulation Therapy; Muscle Strength

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Control

Are not subject to any intervention.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Electrotherapy

The athletes will be submitted to NMES of bilateral quadriceps. The stimulation will be held in order to induce the move flexion / extension involuntary knee in extension machine, with resistance of 30% of maximum voluntary strength.

Group Type: EXPERIMENTAL

NMES

Intervention Type: DEVICE

Neuromuscular Electrical Stimulation

Electrotherapy + Vascular Occlusion

The same as in Electrotherapy group, athletes are subjected to NMES associated total vascular occlusion of the members below the level of the groin.

Group Type: EXPERIMENTAL

NMES

Intervention Type: DEVICE

Neuromuscular Electrical Stimulation

Vascular Occlusion

Intervention Type: DEVICE

Restriction of sanguine flow to the lower limbs

Interventions

NMES

Neuromuscular Electrical Stimulation

Intervention Type: DEVICE

Vascular Occlusion

Restriction of sanguine flow to the lower limbs

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• The categories Basketball Athletes sub- 19, 21 and professional
• BMI between 20 and 24 kg / m²;
• To present physical and cardiorespiratory fitness, attested by the medical responsible for the team, for conducting evaluations and physical training;

Exclusion Criteria

• Previous disease of circulatory order, nervous, metabolic, rheumatic and orthopedic; history of pain or muscle or joint injuries in the lower limbs in the last three months; subjects suffering from muscle fatigue complaint at the time of testing; athletes require the use of stabilizers to perform the tests;
• To present ankle instability assessed by questionnaire Foot and Ankle Outcome Score

• Minimum Eligible Age: 16 Years
• Maximum Eligible Age: 36 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

University of Sao Paulo

OTHER

Sponsor Role: lead

Responsible Party

Rinaldo Roberto de Jesus Guirro

PhD

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Rinaldo Roberto de Jesus Guirro

Ribeirão Preto, São Paulo, Brazil

Countries

Brazil

Other Identifiers

U1111-1143

Identifier Type: -

Identifier Source: org_study_id