Effect of Reverse Nordic Exercise on Vertical Jump in Youth Soccer Players

Not Applicable

Completed

• Conditions: Strength
• Interventions: Procedure: Nordic Reverse Protocol

• Registration Number: NCT06086158
• Lead Sponsor: Universidad de Murcia

Brief Summary

BACKGROUNDː The reverse nordic hamstring exercise is developed for the eccentric work of the rectus femoris. After performing Nordic exercise protocol (its original), the relationship between increased eccentric hamstring strength, improvements in sprint capacity and reduced incidence of injuries can be confirmed. The review of evidence, led us propose the relationship and the possible benefits that could exist in the performance of four weeks of reverse nordic exercise protocol and the vertical jump, measured with countermovement jump test (CMJ) on a platform of jump.

METHODSː An open randomized controlled trial was conducted, with an intervention and control group, to which they were randomly assigned. The sample was made of 19 players from the San Antonio de Murcia Catholic University Team in the youth A category, aged between 16 and 18 years old. The experimental group (n=10) performed the reverse nordic hamstring exercise protocol for four weeks, in addition to the usual training that they shared with the control group (n=9). Data collection for the CMJ test was done before starting the protocol and immediately after finishing it for all participants. Statistical analysis was carried out with the SPSS program.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-10-01
• Primary Completion: 2022-03-04
• Study Completion: 2022-04-04
• Status Verified: 2023-10
• Study First Submitted: 2023-10-01
• Study First Submitted QC: 2023-10-12
• Last Update Submitted: 2023-10-12
• Study First Posted: 2023-10-17
• Last Update Posted: 2023-10-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 19

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Nordic Reverse Protocol	Nordic Reverse Protocol	The intervention group performed the reverse Nordic exercise or quadriceps drop protocol for four weeks in their training sessions. Participants assigned to the intervention group warm up for approximately 15/20 minutes, consisting of five minutes of continuous running at low speed (approximately 10 km/h), followed by 3 minutes of stretching the lower extremities and three separate progressive sprints. between them with two minutes of rest to finish, then they will carry out the corresponding series and repetitions of the protocol and continue with their usual training.

Primary Outcome Measures

Name	Time	Method
Jump Height	It was performed 3 days after completing the 4-week reverse Nordic exercise protocol.	Chronojump Boscosystem® contact platform (Barcelona), to measure the vertical jump (CMJ and Abalakov) and the Chronojump Boscosystem® Software version 1.7.1
Flight Time	It was performed 3 days after completing the 4-week reverse Nordic exercise protocol.	Chronojump Boscosystem® contact platform (Barcelona), to measure the vertical jump (CMJ and Abalakov) and the Chronojump Boscosystem® Software version 1.7.1

Trial Locations

Locations (1)

Lara Sánchez Torres; 🇪🇸 Torre del Mar, Málaga, Spain