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

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.

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Key information

Conditions

Strength

Age range

16 year–18 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Lara Sánchez Torres

Torre del Mar, Málaga, 29740, Spain

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Nordic Reverse Protocol

Procedure

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.

Primary outcomes

Flight Time

Time frame: 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
Jump Height

Time frame: 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

Sponsors and collaborators

Lead sponsor

Universidad de Murcia

Other

Registry information

Official study title

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

Important dates

Study start: 2021
Primary completion: 2022
Study completion: 2022
First posted: Oct 17, 2023
Registry last updated: Oct 17, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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