Effect of Reverse Nordic Exercise on Countermovement in Youth Soccer Players

Universidad de Murcia18 enrolled

Overview

This pilot randomized controlled trial aims to evaluate the preliminary effects and feasibility of a four-week Reverse Nordic Exercise program on countermovement jump performance in youth soccer players during the competitive season. Participants are randomly allocated to either a Reverse Nordic Exercise group, which performs a progressive eccentric quadriceps training program in addition to regular soccer training, or a control group that continues usual training. Countermovement jump performance is assessed before and after the intervention to estimate potential treatment effects and inform the design of a future fully powered randomized controlled trial.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

SINGLE

Enrollment

Conditions

Strength Training Effects

Interventions

The participant begins on their knees, with the trunk upright and fully aligned. At this moment, the soccer player slowly leans back, maintaining the starting position by means of a controlled flexion of the knees. This fall is executed at the lowest speed possible to maximize muscle load in the eccentric phase and reach the point of maximum flexion.

Eligibility

Sex: MALEMin age: 16 YearsMax age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Between 16 and 18 years old * Soccer Players Exclusion Criteria: * Pathologies or Musculoskeletal Injuries in the last 6 months * Surgical Interventions in the lower extremities in the last 6 months

Outcomes

Primary Outcomes

Jump Height

Chronojump Boscosystem® contact platform (Barcelona), to measure the vertical jump (CMJ and Abalakov) and the Chronojump Boscosystem® Software version 1.7.1

Time frame: It was performed 3 days after completing the 4-week reverse Nordic exercise protocol.

Flight Time