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

NCT04289896 | Completed

• 1 other identifier: PLYO
• Study Type: interventional
• Target: 17
• Locations: 1 country
• Sites: 1

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

Keywords

Football, Youth players; Plyometric exercises; Strength; Running speed; Muscular extensibility; Youth players

Outcome Measures

Primary Outcomes (1)

• 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.

  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

  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

  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

  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

  Screening visit, within the first seven days after treatment and after one month follow-up visit

Study Arms (2)

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

Other: Plyometric exercise

Control group

NO INTERVENTION

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

Interventions

Plyometric exercise 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.

Experimental group

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

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

You may not qualify if:

• 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.

Sponsors & Collaborators

• Investigación en Hemofilia y Fisioterapia: lead

Study Sites (1)

Universidad Europea de Madrid

Madrid, Comunity of Madrid, 28670, Spain

Location

MeSH Terms

Interventions

Plyometric Exercise

Intervention Hierarchy (Ancestors)

Exercise Therapy; Rehabilitation; Aftercare; Continuity of Patient Care; Patient Care; Therapeutics; Physical Therapy Modalities; Physical Conditioning, Human; Exercise; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: NETWORK
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 27, 2020
• First Posted: February 28, 2020
• Study Start: March 2, 2020
• Primary Completion: May 20, 2020
• Study Completion: June 10, 2020
• Last Updated: September 2, 2021

Record last verified: 2021-09

Locations

ES (1)