Plyometric Training, in the Improvement of Explosive Strength and Speed in Soccer Players

NCT ID: NCT04289896

Last Updated: 2021-09-02

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 17 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-03-02
• Study Completion Date: 2020-06-10

Brief 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 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.

Conditions

Football Player

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: SINGLE

Study Groups

Experimental group

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

Group Type: EXPERIMENTAL

Plyometric exercise

Intervention Type: OTHER

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.

Control group

Athletes included in the control group will not perform any intervention, continuing with their usual routine.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Plyometric exercise

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.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Youth soccer players federated in Castilla y León
• Over 18 years
• Male
• That they train at least twice a week.

Exclusion Criteria

• 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.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Investigación en Hemofilia y Fisioterapia

NETWORK

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Universidad Europea de Madrid

Madrid, Comunity of Madrid, Spain

Countries

Spain

Other Identifiers

PLYO

Identifier Type: -

Identifier Source: org_study_id