Plyometric Work Together With the Use of Ballast Weight in Lower Limbs in the Improvement of Performance in Jumpers

Not Applicable

Completed

• Conditions: Athletes
• Interventions: Other: Plyometric exercises

• Registration Number: NCT03862508
• Lead Sponsor: Investigación en Hemofilia y Fisioterapia

Brief Summary

Introduction. The high jump is a discipline that use the shortening-stretching cycle. Plyometric exersices emply an eccentric load followed by concentric contraction. Powerinstep is a tool training by means of weigthed weigth whose objective is improving performance in athletes.

Aim. Evaluate efficacy of plyometric training with Powerinstep® in lower limbs, in the performance improvement in professional height jumpers from 18 to 40 years old.

Study design. Non-randomized clinical trial, single bind, with follow-up period.

Methods. 20 athletes will be recruited, that will be randomized to the two study groups: experimental (they carry out a plyometric training programme with Powerinstep) and control (won't be made a intervention on the subjects included in this group). The intervention consists of 6 week, with 2 session for week of 15 minutes duration each. The dependent variables will be the height of the jump, the time of flight, the reaction speed and the impulse force, measures though a pressure platform (model T-PLATE), employing Countermovement Jump, Abalakov and Drop Jump tests. We will make a descriptive statistical analysis. The Shapiro-Wilk statistical test will be used to calculate normality. Trough t-student test of repeated measures and an ANOVA of repeated measures will be calculated the difference between distinct assessment (preintervention, postintervention and follow-up) and the effect intra and inter subject, respectively.

Expected results. We want to observe the changes in performance improvement in height jumpers.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2019-02-27
• Study Start: 2019-03-04
• Study First Submitted QC: 2019-03-04
• Study First Posted: 2019-03-05
• Primary Completion: 2019-03-15
• Study Completion: 2019-06-01
• Status Verified: 2020-01
• Last Update Submitted: 2020-01-23
• Last Update Posted: 2020-01-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 20

Inclusion Criteria

• Height jumpers
• Age between 18 and 40 years
• Currently participate in the competitive field

Exclusion Criteria

• Present medical diagnosis of musculoskeletal pathology
• Who have not had musculoskeletal injuries in the last month
• Not signed the informed consent document.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Experimental	Plyometric exercises	Five Plyometric exercises

Primary Outcome Measures

Name	Time	Method
Change from baseline jump height after intervenion and at month	Screening visit, within the first seven days after treatment and after one month follow-up visit	The height of the jump will be measured on the Countermovement Jump test. The evaluating physiotherapist will stand in front of the subject, who will start from an upright position with the arms on both hips, and will go to a position of flexion of lower members at 90º. Finally, we will ask the subject for a vertical jump on the pressure platform. The results of this test are measured in centimeters and the higher the score, the greater the vertical jump capacity.

Secondary Outcome Measures

Name	Time	Method
Change from baseline impulse force after intervention and at month	Screening visit, within the first seven days after treatment and after one month follow-up visit	The impulse force will be measured with the Abalakov test. The evaluator will be placed in front of the evaluated, previously in an upright position, asking him to go to a position of flexion of lower limbs of 90º and then, assisted by the impulse of the arms, perform a jump on the pressure platform. The unit of measurement of the results of this test is the Newton, indicating a higher score indicates a greater impulse of the jump.
Change from baseline vertical jump after intervention and at month	Screening visit, within the first seven days after treatment and after one month follow-up visit	The vertical jump will be measured with the Drop Jump test. In this test, the physiotherapist will stand in front of the subject, who in an upright position will be dropped from a height of 30 centimeters on the pressure platform, then performing a vertical jump with the help of the arms. The results, in this test, are measured in centimeters, where a higher score indicates a greater vertical jump.

Trial Locations

Locations (1)

Universidad Europea de Madrid; 🇪🇸 Madrid, Comunity Of Madrid, Spain