We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
Working…
ClinicalTrials.gov
ClinicalTrials.gov Menu

The Effect of the Reverse Nordic Curl Exercise on Quadriceps Femoris Muscles Injury Rate Among Soccer Players

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT04674072
Recruitment Status : Unknown
Verified December 2020 by Wesam Saleh A. Al Attar, PT, MSc, PhD, Umm Al-Qura University.
Recruitment status was:  Not yet recruiting
First Posted : December 19, 2020
Last Update Posted : December 19, 2020
Sponsor:
Information provided by (Responsible Party):
Wesam Saleh A. Al Attar, PT, MSc, PhD, Umm Al-Qura University

Brief Summary:

The reverse Nordic curl is a body-weight exercise which mainly works the quadriceps and hip flexors. It has a large eccentric component, meaning the muscles are working whilst lengthening.

The purpose of this study is to investigate the effect of the reverse Nordic curl exercise on Quadriceps femoris muscles injuries among soccer players.

It hypothesized that reverse Nordic curl exercise has a beneficial effect in terms of Quadriceps femoris muscles injury prevention.


Condition or disease Intervention/treatment Phase
Quadriceps Tendon Rupture Quadriceps Strained Tendon Quadriceps Muscle Atrophy Other: Reverse Nordic curl exercise Other: Usual warm up Not Applicable

Detailed Description:

Description of intervention(s) / exposure The intervention group will be instructed to include the reverse Nordic curl exercise into their warm up 15 to 20 mins before training session (3 times per week) during one season (6 months).

Group sessions will be administered by an exercise physiologist and/ or athletic trainer and/ or soccer coaches and/ or strength and conditioning specialists and/ or physiotherapist.

Session attendance checklists will be used to assess or monitor adherence to the intervention.

The reverse Nordic curl is a body-weight exercise which mainly works the quadriceps and hip flexors. It has a large eccentric component, meaning the muscles are working whilst lengthening.

This is a very simple movement to do, but maintaining strict positioning is vital to get the full benefits. Here's how to do it:

Grab a mat on a soft floor. Kneel down, and sit on top of the feet. If trying this exercise for the first time, place the knees and feet close together, approximately hip-width apart. For more advanced, the feet and knees slightly wider, just outside the hips, to be able to lay back farther without hitting the legs.

Sit up in a tall kneeling position, push the hips forward, and lock the rib cage down. Looking to create a straight line down the front of the body, especially at the hips. This is to create a stretch at the hip flexor muscles.

Lower the shoulders towards the floor by bending at the knee, maintaining the "plank" position previously created. If hip extension is maintained, and the core adequately braced, there should be no strain on the low back, and an intense stretch felt down the front of the legs.

Continue to lean back as far as it is possible to control, then squeeze the quads to return to the starting position (this may not be very far to begin with). It is crucial to NOT let the hips drop backwards at any point during the movement. If they do, the stretch on the hip flexors will be released, defeating the point of the exercise.

Once reaching the floor and back is possible for multiple sets of 10+ repetitions, can begin loading the movement by holding a light plate, kettlebell or dumbbell.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 400 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: The intervention group will be instructed to include the reverse Nordic curl exercise into their warm up 15 to 20 mins before training session (3 times per week) during one season (6 months).
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: The Effect of the Reverse Nordic Curl Exercise on Quadriceps Femoris Muscles Injuries Rate Among Soccer Players: Cluster Randomized Controlled
Estimated Study Start Date : January 16, 2021
Estimated Primary Completion Date : June 16, 2021
Estimated Study Completion Date : July 16, 2021

Arm Intervention/treatment
Experimental: Intervention group
The intervention group will be instructed to include the reverse Nordic curl exercise into their warm up 15 to 20 mins before training session (3 times per week) during one season (6 months).
Other: Reverse Nordic curl exercise
The reverse Nordic curl is a body-weight exercise which mainly works the quadriceps and hip flexors. It has a large eccentric component, meaning the muscles are working whilst lengthening.

Active Comparator: Control group
The control group will practice their usual warm up. Usual warm up is defined as any basic exercises performed before a performance or practice to prepare the muscles for vigorous actions
Other: Usual warm up
Usual warm up is defined as any basic exercises performed before a performance or practice to prepare the muscles for vigorous actions.




Primary Outcome Measures :
  1. Incidence of initial injuries [ Time Frame: At the end of the intervention season (6 months). ]

    Injury is defined according to a consensus statement on injury definitions and data collection procedures in soccer studies; an injury will be recorded if it caused the player to be unable to completely participate in the following match or training session.

    Coaches in both the experimental and control groups will be reporting injuries during training and matches by filling in forms once per week and submitting the information using the Sports Injury Tracker injury reporting form (Sports Medicine Australia).

    Injury rates will be summarised as number of injuries per 1000 player-hours for both matches and training. Exposure time in hours will be calculated for each team over a 6-month period.


  2. The incidence of recurrent injuries [ Time Frame: At the end of the intervention season (6 months) ]

    Recurrent injury is defined as a repeat episode of a fully recovered injury. Injury is defined according to a consensus statement on injury definitions and data collection procedures in soccer studies; an injury will be recorded if it caused the player to be unable to completely participate in the following match or training session.

    Coaches in both the experimental and control groups will be reporting injuries during training and matches by filling in forms once per week and submitting the information using the Sports Injury Tracker injury reporting form (Sports Medicine Australia).

    Injury rates will be summarised as number of injuries per 1000 player-hours for both matches and training. Exposure time in hours will be calculated for each team over a 6-month period.



Secondary Outcome Measures :
  1. Injury severity [ Time Frame: At the end of the intervention season (6 months) ]
    Defined as time loss in days (days unable to train): minor (1 to 7 days lost), moderate (8 to 21 days lost), or severe (>21 days lost). Injury severity data will be collected from Sports Injury Tracker injury reporting form.

  2. Compliance with the intervention [ Time Frame: At the end of the intervention season (6 months) ]
    The rate of compliance using attendance log



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Soccer teams
  • Amateur.
  • Male .
  • Training at least three times per week.

Exclusion Criteria:

  • History of lower extremity injury requiring medical attention in the past 6 months, or systemic diseases, cardiovascular disease, neurological disorders or bone fractures or surgery in the previous year.

Players who joined a participating team after the start of the trial will be excluded.


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04674072


Contacts
Layout table for location contacts
Contact: Wesam Saleh A. Al Attar, PhD +966 54 820 6504 wsattar@uqu.edu.sa

Locations
Layout table for location information
Saudi Arabia
Umm Al Qura University
Mecca, Saudi Arabia, 21955
Contact: Wesam Saleh A Al Attar, PhD    +966 54 820 6504    wsattar@uqu.edu.sa   
Principal Investigator: Wesam Saleh A Al Attar, PhD         
Sponsors and Collaborators
Umm Al-Qura University
Publications of Results:
Other Publications:
Layout table for additonal information
Responsible Party: Wesam Saleh A. Al Attar, PT, MSc, PhD, Professor, Umm Al-Qura University
ClinicalTrials.gov Identifier: NCT04674072    
Other Study ID Numbers: HAPO-02-K-012-2020-11-480
First Posted: December 19, 2020    Key Record Dates
Last Update Posted: December 19, 2020
Last Verified: December 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: All of the individual participant data collected during the trial, after de-identification will be shared.
Supporting Materials: Study Protocol
Statistical Analysis Plan (SAP)
Time Frame: Start: Immediately following publication. End: No end date determined.
Access Criteria: Access subject to approvals by Principal Investigator. The Principal Investigator can be contacted by email wsattar@uqu.edu.sa

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Wesam Saleh A. Al Attar, PT, MSc, PhD, Umm Al-Qura University:
Injury Prevention Program
Reverse Nordic curl exercise
Additional relevant MeSH terms:
Layout table for MeSH terms
Muscular Atrophy
Rupture
Atrophy
Pathological Conditions, Anatomical
Wounds and Injuries
Neuromuscular Manifestations
Neurologic Manifestations
Nervous System Diseases