Football PlayerNCT04289896
Plyometric Training, in the Improvement of Explosive Strength and Speed in Soccer Players
A study testing Plyometric exercise in people with Football Player, run by Investigación en Hemofilia y Fisioterapia at 1 site in Spain.
Trial summary
Football requires a high number of actions at high speed and intensity. The application of plyometrics can improve explosive strength and speed levels in soccer players. The main objective of the study is to assess the effectiveness of a program based on plyometric exercises for the improvement of the explosive force… Read more about this study
- Who is it for?
- Ages 18 to 30 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Football Player
- What is being tested?
- Plyometric exercise
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 17 participants
- Where
- 1 siteSpain
- Study dates
- 2 Mar 2020to 10 Jun 2020
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 30 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Youth soccer players federated in Castilla y León
- Over 18 years
- Male
- That they train at least twice a week.
Who cannot join
- subjects who: present a medical diagnosis of musculoskeletal lesion in the lower limb at the time of starting the study
- Who have been out of the competition for more than 6 months as a result of an injury in the last year
- That are part of the experimental phase of another study during our intervention and follow-up period
- That they do not attend at least 80% of the intervention sessions
- Not sign the informed consent document.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effectiveness of an Intervention Through a Plyometric Training Program, in the Improvement of Explosive Strength and Speed in Youth Players. A Randomized Clinical Study.
Football requires a high number of actions at high speed and intensity. The application of plyometrics can improve explosive strength and speed levels in soccer players.
The main objective of the study is to assess the effectiveness of a program based on plyometric exercises for the improvement of the explosive force in vertical jump and the speed in running with and without the ball in soccer players of youth category.
Read more
Randomized clinical study, simple blind, with follow-up period. 30 players will be randomized to the study groups: experimental and control. The intervention will last 4 weeks, with 2 weekly sessions lasting 20 minutes. The study variables will be: Vertical Countermovement Jump Test with Arms and Twenty-Centimeter Drop Jump Reactive Strength Index (Explosive Force), running speed without ball and ball (20 meter speed test), hitting speed of ball (Maximal Kicking Velocity Test), hamstring extensibility (Sit and Reach Test) and sural triceps extensibility (Leg Motion Basic). Normality will be calculated using an analysis of Kolmogorov Smirnov. With the t-student test the differences between assessments will be calculated and with an ANOVA of repeated measures, the effect between intersubject will be calculated. The effect size will be obtained with Cohen's formula.
It is expected to obtain an improvement in the explosive force in the vertical jump, as well as in the running speed with and without the ball.
- Conditions
- Football Player
- Being tested
- Plyometric exercise
- Keywords
- Football, Youth players, Plyometric exercises, Strength, Running speed, Muscular extensibility, Youth players
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Plyometric exerciseOther
The plyometric program to be followed by the subjects assigned to the experimental group during the four weeks includes: Squat jumps, alternate lunge, cyclic horizontal jump, horizontal left leg jump, horizontal right leg jump, vertical left leg jump, right leg vertical jump, squat box jumps, box jumps left leg, box jumps right leg, box to box squat jumps, box to box left leg, box to box right leg.
In all the exercises the subjects will be able to help themselves with the arms and a rest period of 120 seconds will be left between each series.
The intervention will be carried out prior to training, keeping a minimum of 48 hours of rest between sessions.
| Study group | Role | What they receive |
|---|---|---|
| Experimental group | Experimental | Each session will last 20 minutes, taking place 2 days a week, for a period of 4 weeks. Prior to the completion of the routine training of each team, the plyometric exercise program will be carried out in the experimental group. When the intervention ends, the members of the experimental group will perform the usual training Receives: Other: Plyometric exercise |
| Control group | No intervention | Athletes included in the control group will not perform any intervention, continuing with their usual routine. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change from baseline explosive force in vertical jump after treatment and at month
Through the Vertical Countermovement Jump Test with Arms. The subject will be placed in standing position on a contact platform, it should make a rapid downward movement followed by a maximum vertical jump using the arms. The distance jumped in centimeters will be measured.
Measured: Screening visit, within the first seven days after treatment and after one month follow-up visit
Secondary outcomes (4)
Change from baseline running speed after treatment and at month
A speed test of 20 meters will be carried out on a flat surface of grass, which will be carried out both with a ball and without a ball. Initially, there will be a specific warm-up of 3 sub-maximum races in those 20 meters, after which, the subjects will make 3 maximum sprints of 20 meters, with 3 minutes of rest between them. The race will start with the subject 0.5 meters behind the starting line. The time it takes for the subject to arrive from the start line to the 20 meter line will be measured. The fastest sprint time of the 3 attempts will be selected.
Measured: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline ball hitting speed after treatment and at month
Through the Maximal Kicking Velocity Test. Each subject will hit a soccer ball located on the ground, instructing them to obtain maximum speed. They must strike with maximum force towards a net with the dominant leg and with a run of 2 strides. The distance between the ball and the net will be 4 meters. Each subject will make 2 practice strokes and 3 strokes of maximum strength, among which 1 minute rest will be allowed. The speed of the ball will be measured with a radar placed 2 meters from the ball and 0.7 meters from the ground
Measured: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline hamstring extensibility after treatment and at month
It will be done by applying the Sit and Reach Test. This test will be carried out with the subject seated, knees extended and the feet in 90º of flexion placed both, against a drawer designed for the realization of this test. From this position, the subject is urged to progressively and maximally flex the trunk with the legs and arms extended while maintaining the final position for 2 seconds. The final position is the result of the test, assessing at that time the distance (in centimeters) that exists between the tips of the fingers and the tangent to the soles of the feet
Measured: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline sural triceps extensibility after treatment and at month
An assessment of the dorsiflexion of the ankle under load will be performed. It will be used as a measuring instrument Leg Motion Basic. The subject will be placed in standing position (arms crossed on the chest) with the foot to be assessed in advance on the work surface, respecting the marks of this. You should perform an ankle dorsiflexion forward the knee while moving the vertical reference on the platform. It is important to ensure that the subject does not detach the heel from the floor during the test
Measured: Screening visit, within the first seven days after treatment and after one month follow-up visit
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Feb 2020
- Study start2 Mar 2020
- Primary completion20 May 2020
- Study completion10 Jun 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Football PlayerStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 17 participants (actual)
Sponsor and investigators
- Lead sponsor
- Investigación en Hemofilia y Fisioterapia
- Sponsor type
- Research network
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04289896
- Sponsor's protocol ID
- PLYO
- Status last verified
- Sep 2021
- First submitted
- 27 Feb 2020
- Last updated
- 2 Sep 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 2 Sep 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effectiveness of an Intervention Through a Plyometric Training Program, in the Improvement of Explosive Strength and Speed in Youth Players. A Randomized Clinical Study.
- ClinicalTrials.gov ID
- NCT04289896
- Acronym / sponsor ID
- PLYO
- Conditions
- Football Player
- Keywords
- Football, Youth players, Plyometric exercises, Strength, Running speed, Muscular extensibility, Youth players
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 17 participants (actual)
- Lead sponsor
- Investigación en Hemofilia y FisioterapiaResearch network
- Study start
- 2 Mar 2020 (actual)
- Primary completion
- 20 May 2020 (actual)
- Study completion
- 10 Jun 2020 (actual)
- First posted
- 28 Feb 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Football requires a high number of actions at high speed and intensity. The application of plyometrics can improve explosive strength and speed levels in soccer players.
The main objective of the study is to assess the effectiveness of a program based on plyometric exercises for the improvement of the explosive force in vertical jump and the speed in running with and without the ball in soccer players of youth category.
Randomized clinical study, simple blind, with follow-up period. 30 players will be randomized to the study groups: experimental and control. The intervention will last 4 weeks, with 2 weekly sessions lasting 20 minutes. The study variables will be: Vertical Countermovement Jump Test with Arms and Twenty-Centimeter Drop Jump Reactive Strength Index (Explosive Force), running speed without ball and ball (20 meter speed test), hitting speed of ball (Maximal Kicking Velocity Test), hamstring extensibility (Sit and Reach Test) and sural triceps extensibility (Leg Motion Basic). Normality will be calculated using an analysis of Kolmogorov Smirnov. With the t-student test the differences between assessments will be calculated and with an ANOVA of repeated measures, the effect between intersubject will be calculated. The effect size will be obtained with Cohen's formula.
It is expected to obtain an improvement in the explosive force in the vertical jump, as well as in the running speed with and without the ball.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental group | Experimental | Other: Plyometric exerciseEach session will last 20 minutes, taking place 2 days a week, for a period of 4 weeks. Prior to the completion of the routine training of each team, the plyometric exercise program will be carried out in the experimental group. When the intervention ends, the members of the experimental group will perform the usual training |
| Control group | No intervention | –Athletes included in the control group will not perform any intervention, continuing with their usual routine. |
Who may qualify
- Ages
- 18 to 30 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Youth soccer players federated in Castilla y León
- Over 18 years
- Male
- That they train at least twice a week.
Key exclusion criteria (5 listed)
- subjects who: present a medical diagnosis of musculoskeletal lesion in the lower limb at the time of starting the study
- Who have been out of the competition for more than 6 months as a result of an injury in the last year
- That are part of the experimental phase of another study during our intervention and follow-up period
- That they do not attend at least 80% of the intervention sessions
- Not sign the informed consent document.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Plyometric exerciseThe plyometric program to be followed by the subjects assigned to the experimental group during the four weeks includes: Squat jumps, alternate lunge, cyclic horizontal jump, horizontal left leg jump, horizontal right leg jump, vertical left leg jump, right leg vertical jump, squat box jumps, box jumps left leg, box jumps right leg, box to box squat jumps, box to box left leg, box to box right leg. In all the exercises the subjects will be able to help themselves with the arms and a rest period of 120 seconds will be left between each series. The intervention will be carried out prior to training, keeping a minimum of 48 hours of rest between sessions. | Other | Experimental group |
Primary outcome
Change from baseline explosive force in vertical jump after treatment and at month
Time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit
Through the Vertical Countermovement Jump Test with Arms. The subject will be placed in standing position on a contact platform, it should make a rapid downward movement followed by a maximum vertical jump using the arms. The distance jumped in centimeters will be measured.
4 secondary outcomes
Change from baseline running speed after treatment and at month
Time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline ball hitting speed after treatment and at month
Time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline hamstring extensibility after treatment and at month
Time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit
Change from baseline sural triceps extensibility after treatment and at month
Time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Sep 2021.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Plyometric exercise in people with Football Player, run by Investigación en Hemofilia y Fisioterapia at 1 site in Spain.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Sep 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change from baseline explosive force in vertical jump after treatment and at month (time frame: Screening visit, within the first seven days after treatment and after one month follow-up visit). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Sep 2021.