Plyometric and Eccentric Training in Improving the Strength, Stability and Ability of Women Soccer Players

NCT04255290 | Completed

• 1 other identifier: HAM-EXPL
• Study Type: interventional
• Target: 17
• Locations: 1 country
• Sites: 1

Brief Summary

Introduction. The high rate of recurrence and clinical involvement of muscle injuries in lower limbs, makes the hamstring musculature a very important structure in the development of athletes. Excentric movements, where eccentric force and flexibility are fundamental, and the quadriceps-hamstrings contraction cycle are risk factors for hamstring muscle injury. Aim. ascertain the effectiveness of plyometric and excéntric exercises in the improvement of hamstring strength. Study design. Randomized, prospective, multicenter, single-blind clinical study with athletes. Methods. This study will be carried out with a sample of 40 women, federated players from 18 to 30 years old. They will be randomized into two groups: experimental (plyometric work and eccentric exercises) and control (eccentric exercises). The intervention will last 6 weeks in which, before each training, they will carry out the intervention, for 20 minutes, 3 days a week. An inter-judges piloting will be carried out. We will analyze the normality of the sample with the Kolmogorov-smirnov test and for the inferential analysis, we will use the t-student test of paired data to observe the difference between each evaluation in each study group, and the repeated measures ANOVA to calculate the effect intra and intergroup. Using Cohen's formula we will calculate the size of the effect. Expected results. The eccentric work along with the plyometrics improves strength in hamstrings, jumping and stability.

Conditions

Female Athlete

Keywords

Isquiotibial; Plyometrics; Eccentric; Soccer; Prevention

Outcome Measures

Primary Outcomes (1)

• Change from baseline hamstring strength after treatment and at 1 month

  The mobile application "Nordic" will be used to assess the strength of the hamstring muscles. With the athlete kneeling on the floor, fixed by a partner from the ankles, she will drop down forward. The evaluator will be on the side, recording with a smartphone (Iphone 7) to measure the moment when the subject uncrosses the arms. The test will be carried out up to three times, taking the measures of the angle of rupture in the exercise (angle that forms the trunk with the ground considering the position of the tibiae). The unit of measure the breaking angle.

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

Secondary Outcomes (2)

• Change from baseline the jump after treatment and at 1 month

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

• Change from baseline lower limb stability after treatment and at 1 month

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

Study Arms (2)

Experimental group

EXPERIMENTAL

Leg Squat Lounge: The player will be placed in squat position and her partner will be placed behind, suspending the most posterior leg in the air. With the leg that is supported, you will perform a monopodal jump with controlled fall, supporting the foot from tip to heel. It will be done with both lower limbs performing 1 series of 5 repetitions with 30 seconds of rest between sets. 180 jump: The footballer will start in bipodal support, with the trunk erect and hands on the hips. Perform a bipodal jump with a 180º turn during this, keeping the fall for 2 seconds. Each repetition, the turn will be done in a different sense. It will carry out 2 series of 20 sec of execution with 20 sec of rest between series. Brad jump stick landing: The player will stand in hands-free standing. Perform a bipodal jump as far as possible. The knees will not exceed the tip of the foot and the fall will be with a trunk position as straight as possible. He will make 5 jumps the first two weeks.

Other: Leg Squat Lounge

Control group

ACTIVE COMPARATOR

Nordic Funds: One player will stand on her knees, while the other, behind, fixes her legs. The kneeling footballer must drop forward in a controlled manner until she touches the ground and returns to the starting position. The Diver: Player in monopodal support on the lower limb to work, performing hip flexion with the arms forward and the opposite lower limb back, looking for a horizontality in the pelvis (with 10º-20º knee flexion) It will be done with both lower limbs. The Glider: With the footballer standing in front of her partner, holding both of them by the shoulders, she lets one leg slide back while the other stays fixed. To return to the starting position, it will be helped by the other player, while the knee will not exceed 10 degrees of flexion. The distribution of all the exercises will be: 2 sets of 5 repetitions with 20 sec rest between sets

Other: Control group

Interventions

Leg Squat Lounge OTHER

The players assigned to the experimental group will receive an intervention through plyometric and eccentric hamstring exercises

Experimental group

Control group OTHER

The subjects included in the control group will perform an eccentric work protocol

Control group

Eligibility Criteria

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

You may qualify if:

• Women
• to 30 years old
• With 3 or less days of training a week
• Federate in the Community of Madrid (Spain)

You may not qualify if:

• Players who are injured and cannot do the job at the time of the study
• Soccer players who have had a hamstring injury in the last 6 months
• To practice another sport
• They are receiving physiotherapy treatment in the lower limb
• Not signing the informed consent document

Sponsors & Collaborators

• Investigación en Hemofilia y Fisioterapia: lead

Study Sites (1)

European University of Madrid

Madrid, Spain

Location

MeSH Terms

Interventions

Control Groups

Intervention Hierarchy (Ancestors)

Epidemiologic Research Design; Epidemiologic Methods; Investigative Techniques; Research Design; Methods

Study Officials

• Rubén Cuesta-Barriuso, PhD

  Universidad Europea de Madrid

  PRINCIPAL INVESTIGATOR

Study Design

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

Study Record Dates

• First Submitted: February 1, 2020
• First Posted: February 5, 2020
• Study Start: February 10, 2020
• Primary Completion: April 30, 2020
• Study Completion: May 10, 2020
• Last Updated: September 2, 2021

Record last verified: 2021-09

Locations

ES (1)