Plyometric Work Together With the Use of Ballast Weight in Lower Limbs in the Improvement of Performance in Jumpers

NCT ID: NCT03862508

Last Updated: 2020-01-27

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-03-04
• Study Completion Date: 2019-06-01

Brief Summary

Introduction. The high jump is a discipline that use the shortening-stretching cycle. Plyometric exersices emply an eccentric load followed by concentric contraction. Powerinstep is a tool training by means of weigthed weigth whose objective is improving performance in athletes.

Aim. Evaluate efficacy of plyometric training with Powerinstep® in lower limbs, in the performance improvement in professional height jumpers from 18 to 40 years old.

Study design. Non-randomized clinical trial, single bind, with follow-up period.

Methods. 20 athletes will be recruited, that will be randomized to the two study groups: experimental (they carry out a plyometric training programme with Powerinstep) and control (won't be made a intervention on the subjects included in this group). The intervention consists of 6 week, with 2 session for week of 15 minutes duration each. The dependent variables will be the height of the jump, the time of flight, the reaction speed and the impulse force, measures though a pressure platform (model T-PLATE), employing Countermovement Jump, Abalakov and Drop Jump tests. We will make a descriptive statistical analysis. The Shapiro-Wilk statistical test will be used to calculate normality. Trough t-student test of repeated measures and an ANOVA of repeated measures will be calculated the difference between distinct assessment (preintervention, postintervention and follow-up) and the effect intra and inter subject, respectively.

Expected results. We want to observe the changes in performance improvement in height jumpers.

Conditions

Athletes

Study Design

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

Study Groups

Experimental

Five Plyometric exercises

Group Type: EXPERIMENTAL

Plyometric exercises

Intervention Type: OTHER

Jump Drop Jump, dropping the subject from a height of 30cm and then make a vertical jump.

Long jumps asking the athletes to take momentum and make a leap forward trying to reach the greatest possible distance.

Jump Countermovement jump unilaterally, alternating the lower extremities. Jumps 180º with the athletes maintaining a semi-squat position. Jump Countermovement jump repeatedly starting from an upright position and the upper extremities in both hips.

All the exercises will be done through 8 repetitions per session during the first two weeks, increasing two repetitions every two weeks (until reaching 12 repetitions at the end of the intervention).

For the realization of each one of the exercises, the ballasted weight will be used (Powerinstep® model).

Control

Subjects included in the control group will not receive any intervention

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Plyometric exercises

Jump Drop Jump, dropping the subject from a height of 30cm and then make a vertical jump.

Long jumps asking the athletes to take momentum and make a leap forward trying to reach the greatest possible distance.

Jump Countermovement jump unilaterally, alternating the lower extremities. Jumps 180º with the athletes maintaining a semi-squat position. Jump Countermovement jump repeatedly starting from an upright position and the upper extremities in both hips.

All the exercises will be done through 8 repetitions per session during the first two weeks, increasing two repetitions every two weeks (until reaching 12 repetitions at the end of the intervention).

For the realization of each one of the exercises, the ballasted weight will be used (Powerinstep® model).

Intervention Type: OTHER

Other Intervention Names

Plyometric training programme with Powerinstep

Eligibility Criteria

Inclusion Criteria

• Height jumpers
• Age between 18 and 40 years
• Currently participate in the competitive field

Exclusion Criteria

• Present medical diagnosis of musculoskeletal pathology
• Who have not had musculoskeletal injuries in the last month
• Not signed the informed consent document.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 40 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Investigación en Hemofilia y Fisioterapia

NETWORK

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Rubén Cuesta-Barriuso, PhD

Role: PRINCIPAL_INVESTIGATOR

Universidad Europea de Madrid

Locations

Universidad Europea de Madrid

Madrid, Comunity of Madrid, Spain

Countries

Spain

Other Identifiers

PLIO project

Identifier Type: -

Identifier Source: org_study_id