Elastic-explosive Strength Training Combined With Active Joint Mobilizations in Basketball Players

Study Overview
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Brief Summary
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The specific training of the elastic-explosive force of the muscles involved in vertical jump and active mobilizations is used to improve the quality of the jump. It is also intended to reduce the loss of centimeters, recovery times and fatigue produced during a series of vertical jumps. The objective of the study is to assess the effectiveness of active mobilizations together with specific training in lower limbs, in ankle mobility, the perception of effort and the height and resistance of vertical jumping in amateur basketball players. Randomized clinical study. 50 basketball players from 20 to 35 years will be randomized to the study groups: control group (resistance strength exercises, elastic-explosive force) and experimental group (resistance strength exercises, elastic-explosive force together with active mobilizations). The dependent variables will be: repeated jump (15 second Jump test, my Jump 2), maximum vertical jump (CMJ free arms, my Jump 2), subjective perception of effort (Borg scale) and ankle dorsiflexion (goniometer). The sample distribution will be calculated using a Kolmogorov-Smmirnof analysis. The changes after each evaluation will be analyzed with the t-student test and with an ANOVA of repeated measures the intra and intersubject effect will be observed. The effect size will be calculated using Cohen's formula. It is expected to observe an improvement in the resistance of vertical jumps, with a decrease in the loss of centimeters in the repetitions of jumps.

Official Title
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Efficacy of a Physiotherapy Intervention Through an Elastic-explosive Strength Training Combined With Active Joint Mobilizations, on the Improvement of the Efficiency of Repeated Vertical Jumping in Basketball Players

Conditions
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Basketball Players

Intervention / Treatment
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* Other: Elastic-explosive and resistance strength
* Other: Elastic-explosive strength


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Basketball players in the Community of Madrid Male With an age range of 18 to 35 years Federated Exclusion Criteria: Athletes who present an injury at the time of the study Who are receiving some parallel physiotherapy intervention Have an injury during the experimental or follow-up phase Have not signed the informed consent document

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 35 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental group<br>Each session of the intervention will have a duration of 15 minutes of specific training taking place two sessions a week, during a period of 5 weeks. The exercises will be performed in the first 15 minutes of the training session. The intervention will include specific exercises of elastic-explosive strength and resistance strength | Other: Elastic-explosive and resistance strength<br>* The resistance exercises are: running (3 minutes), 2 farmers carrying marching, 3 side to side ankle hops, 4 plyo lunge jump, 5 lateral jump over barrier, 2 monopodalic jump with ball pass, 3 board throw with half court sprint, 4 lateral shuffle mirror, and 5 combo finisher 4x4. Plyometric exercises are: ankle rotations, knee extension, squat, hip flexion-extension, knee and ankle, ankle mobilizations, squat with rise, pelvis ante / retroversion, global mobilization, stride<br>|
| Active Comparator: Control group<br>Each session of the intervention will have a duration of 10 minutes of specific training taking place two sessions a week, during a period of 5 weeks. The exercises will be performed in the first 15 minutes of the training session. The intervention will include specific exercises of elastic-explosive strength | Other: Elastic-explosive strength<br>* Plyometric exercises are: ankle rotations, knee extension, squat, hip flexion-extension, knee and ankle, ankle mobilizations, squat with rise, pelvis ante / retroversion, global mobilization, stride<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline maximum vertical jump after treatment and at month | The My Jump 2 application will be used. With the video we can see the moment when the feet do not touch the ground and with this data the application automatically calculates the height in centimeters. From a squat position, the player will have to perform a vertical jump, landing in the same starting position. | Screening visit, within the first seven days after treatment and after one month follow-up visit | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline resistance of the explosive force after treatment and at month | The 15 sec repeated jump test will assess the resistance of the explosive force. With the My Jump 2 application we will calculate the height in repeated jumps in 15 seconds. To do this, we will ask the athlete to, from a squat position, perform 15 repeated vertical jumps, returning to the starting position every time. | Screening visit, within the first seven days after treatment and after one month follow-up visit | 
| Change from baseline subjective perception of effort after treatment and at month | We will use the modified Borg scale with a scoring range of 1 to 10 points (the higher the score, the greater the perception of effort). The concept of perceived effort is a subjective assessment that indicates the person's opinion regarding the intensity of the work performed. 1 indicates little fatigue, 10 is the maximum effort perceived by the athlete | Screening visit, within the first seven days after treatment and after one month follow-up visit | 
| Change from baseline dorsal ankle flexion after treatment and at month | This variable will be measured with the use of a goniometer. With the athlete standing, from a stride position, with the first finger placed 10 cm from the wall, we will ask him to do a knee flexion towards the wall, with the heel always resting on the floor. We will place the goniometer axis in the center of the outer malleolus. The fixed arm will be parallel to the ground, while the mobile arm will be aligning the fibula. The unit of measure is the degrees. | Screening visit, within the first seven days after treatment and after one month follow-up visit | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Active mobilizations, Strength, Endurance, Vertical Jump, Physiotherapy