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

Investigación en Hemofilia y Fisioterapia

Status: Completed

Conditions: Female Athlete

Treatments: Other: Leg Squat Lounge; Other: Control group

Study type: Interventional

Funder types: NETWORK

Identifiers

NCT04255290

HAM-EXPL

Details and patient eligibility

About

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.

Enrollment: 17 patients

Sex: Female

Ages: 18 to 30 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

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

Exclusion criteria

• 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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

---

17 participants in 2 patient groups

Experimental group

Experimental group

Description:

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.

Treatment:

Other: Leg Squat Lounge

Control group

Active Comparator group

Description:

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

Treatment:

Other: Control group