Muscle Weakness Clinical Trial
Official title:
Low Level Laser Therapy and Neuromuscular Electrical Stimulation on Knee Extension Strength and Jump in Volleyball Athletes: a Randomized Controlled Trial
Verified date | August 2015 |
Source | Centro de Traumatologia do Esporte |
Contact | n/a |
Is FDA regulated | No |
Health authority | Brazil: Ministry of Health |
Study type | Interventional |
Background: Volleyball players constantly perform vertical jumps, the higher the height of the jump is better sports performance of these players. Several methods have been tested to improve jumping performance in these players. It will be investigated the addition of electrical stimulation and phototherapy to jump training in volleyball athletes. DESIGN: randomized controlled trial. METHODS: This study will be conducted with 36 male athletes volleyball with minimum experience of 12 months sport. Will be randomized and assigned to 3 groups (control group, NEMES group and group phototherapy). All 36 healthy volleyball athletes who passed the initial selection and agreed to participate in the study, conduct a muscle strength and jump training program, which is held in both legs simultaneously. The 12 healthy athletes electrical stimulation group will perform the same training program described above, but strength training is associated with electrical stimulation. The 12 healthy athletes participating in the phototherapy group will undergo a phototherapy protocol before performing the strength and jump training. All selected participants will undergo an assessment of muscle strength of knee extensors and evaluate the jump. These evaluations were baseline, 6 weeks and 8 weeks after baseline.
Status | Completed |
Enrollment | 36 |
Est. completion date | August 2015 |
Est. primary completion date | July 2015 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Male |
Age group | 17 Years to 18 Years |
Eligibility |
Inclusion Criteria: - Healthy volunteers; - volleyball players; - gender male; - non-smoking; - aged between 17 and 18; - weight within 15% variation limit of normal weight for male athletes, taking into account height and physique. Exclusion Criteria: - smoking volunteers; - history of alcohol or substance abuse; - diagnosis of cardiac, renal, gastrointestinal, hepatic, pulmonary, neurological, psychiatric, hematological or metabolic disorders; that are not available to participate in all stages of the study. |
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Investigator, Outcomes Assessor)
Country | Name | City | State |
---|---|---|---|
Brazil | Ronaldo Alves da Cunha | São Paulo |
Lead Sponsor | Collaborator |
---|---|
Centro de Traumatologia do Esporte |
Brazil,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Muscle strength measured by dynamometer | The athletes will be evaluated in 3 phases: initial evaluation (pre-training), immediately after post-training, and a 8-wk follow up. It will be assessed the isometric muscle strength of knee extensors. | 6 weeks | No |
Secondary | Global impression measured by global perceived effect scale | The athletes will be evaluated in 3 phases: initial evaluation (pre-training), immediately after post-training, and a 8-wk follow up. It will be assessed the global perceived effect scale about the jump. | 6 weeks | No |
Secondary | Jumping frequency measured by jumping frequency in 2 minutes | The athletes will be evaluated in 3 phases: initial evaluation (pre-training), immediately after post-training, and a 8-wk follow up. It will be assessed Jumping frequency in 2 Minutes (countermovement jump) | 6 weeks | No |
Secondary | Jump ability measured by jump ability test | The athletes will be evaluated in 3 phases: initial evaluation (pre-training), immediately after post-training, and a 8-wk follow up. It will be assessed the jump ability test. | 6 weeks | No |
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