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

Strength Clinical Trial

Official title:

Effect of Reverse Nordic Exercise on Vertical Jump in Youth Soccer Players: Randomized Controlled Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT06086158
• Other study ID #: TFM2022
• Status: Completed
• Phase: N/A
• Start date: October 1, 2021
• Est. completion date: April 4, 2022

Study information

• Verified date: October 2023
• Source: Universidad de Murcia
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 19
• Est. completion date: April 4, 2022
• Est. primary completion date: March 4, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 16 Years to 18 Years

Eligibility

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

Related Conditions & MeSH terms

• Strength

Intervention

Procedure:
• Nordic Reverse Protocol
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.

Locations

Country	Name	City	State
Spain	Lara Sánchez Torres	Torre del Mar	Málaga

Sponsors (1)

Lead Sponsor	Collaborator
Universidad de Murcia

Country where clinical trial is conducted

Spain, 

Outcome

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