An interventional study of NMES and Vascular Occlusion in Electric Stimulation Therapy and Muscle Strength, sponsored by University of Sao Paulo. Completed at 1 site in Brazil. Open to male participants aged 16 Years to 36 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-07-21.
Sponsored by University of Sao Paulo · Not applicable, Interventional, and Treatment
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.
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%.
656 studies on the registry are indexed under Hypertrophy; 87 are open to participants now.
This study's enrollment of 45 is close to the median of 50 across 460 interventional studies indexed under Hypertrophy.
Browse Hypertrophy studies →University of Sao Paulo is the lead sponsor of 1,005 studies on the registry; 90 are open to participants now.
Of its 7 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Exclusion Criteria:
Are not subject to any intervention.
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.
Device: NMES
The same as in Electrotherapy group, athletes are subjected to NMES associated total vascular occlusion of the members below the level of the groin.
Device: NMES · Device: Vascular Occlusion
Neuromuscular Electrical Stimulation
Restriction of sanguine flow to the lower limbs
Analysis of muscle strength through isokinetic dynamometer (N / M).
The association of NMES and vascular occlusion of the lower limbs increases the isokinetic torque?
Time frame: 12 weeks
Analysis of hypertrophy through the cross section area of the muscle via ultrasound (mm).
The association of NMES and vascular occlusion of the lower limbs increases the cross-sectional area of the muscle?
Time frame: 12 weeks
Analysis of GH Level by blood test (mg / L)
The association of NMES and vascular occlusion of the lower limbs increases the growth hormone (GH) levels after training?
Time frame: 12 weeks
Analysis of IGF-1 Level by blood test (mg / L)
The association of NMES and vascular occlusion of the lower limbs increases the insulin like growth factor-1 (IGF-1) after training?
Time frame: 12 weeks
Analysis of Star Excursion Balance Test (cm)
The association of NMES and vascular occlusion of the lower limbs improves balance of the athletes?
Time frame: 12 weeks
Performance Analysis in Illinois agility test (Time in seconds)
The association of NMES and vascular occlusion of the lower limbs improves agility of the athletes?
Time frame: 12 weeks
Muscle electromyographic analysis through the median frequency (Hz) and root mean square (RMS)
The association of NMES and vascular occlusion of the lower limbs increases the muscle activation and recruitment?
Time frame: 12 weeks
This study is completed, as verified in Jul 2017. You cannot join it, but the record below documents what was studied.
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University of Sao Paulo