NCT03862508

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

Efficiency of Plyometric Work Together With the Use of Ballast Weight in Lower Limbs in the Improvement of Performance in Jumpers From 18 to 40 Years Old. Nonrandomized Pilot Study.

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (actual)
• Sponsor: Investigación en Hemofilia y Fisioterapia · Network
• Sex: Male
• Age: 18 Years – 40 Years
• Healthy volunteers: Accepted

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

Interventions

Type	Name	Description
OTHER	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).

Timeline

• Start date: 2019-03-04
• Primary completion: 2019-03-15
• Completion: 2019-06-01
• First posted: 2019-03-05
• Last updated: 2020-01-27

Locations

1 site across 1 country: Spain