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Compatibility of Different Injury Prevention Exercises in Athletes

Primary Purpose

Injury Prevention

Status
Completed
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
Eccentric hamstring exercises
Unistable exercises
Control
Sponsored by
University of Greenwich
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Injury Prevention focused on measuring training, soccer, eccentric, lengthening, unstable, squatting

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)MaleAccepts Healthy Volunteers

Inclusion Criteria:

  • males, recreationally trained football players
  • Read and sign the informed consent

Exclusion Criteria:

  • Participants that has undertaken a lower body resistance-training program in the preceding 6 months,
  • Reported a previous lower limb injury

Sites / Locations

    Arms of the Study

    Arm 1

    Arm 2

    Arm 3

    Arm Type

    Experimental

    Experimental

    Active Comparator

    Arm Label

    Eccentric hamstring exercises

    Unistable exercises

    Control

    Arm Description

    Three workouts per week on non-consecutive days for 6 weeks. 1)Assisted Nordic Curl: Kneeling on the ground with ankles fixed by a partner, participant lowering the trunk to the ground by eccentrically contracting the hamstrings. 2) Eccentric single stiff-legged dead lift: From standing position with the arm crossing over the chest, participant lowering the body toward the ground by flexing the hip joint without bending the support leg knee and raising the other leg until form an straight line with the trunk4 3) Eccentric double stiff-legged dead lift: From standing position with the arm crossing over the chest, participant lowering the body toward the ground by flexing the hip joint without bending the knees until the body parallel with the floor.

    Trained 3 times per week on non-consecutive days for 6 weeks for a total of 18 training sessions. UNS training consisted in the following three exercises: 1) One leg squat: Standing on the floor on one leg only and squat down until knee flexed to 900 and press back up with just that single leg. 2) One leg Squat on Bosu® balance Trainer: Standing on the Bosu® balance Trainer on one leg only and squat down until supported leg knee flexes to 900 and press back up with just that single leg. 3) Forward lunges on a Bosu® balance Trainer: position the forward leg on the Bosu® balance Trainer and squatting with the forward leg.

    Participants did not undergo any resistance training and continued with their regular soccer training.

    Outcomes

    Primary Outcome Measures

    knee torque-angle
    Isokinetic measurements

    Secondary Outcome Measures

    Full Information

    First Posted
    December 2, 2014
    Last Updated
    December 4, 2014
    Sponsor
    University of Greenwich
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    1. Study Identification

    Unique Protocol Identification Number
    NCT02311062
    Brief Title
    Compatibility of Different Injury Prevention Exercises in Athletes
    Official Title
    Effects of Two Different Injury Prevention Resistance Exercise Protocols on the Hamstring Torque-Angle Relationship: A Randomized Controlled Trial
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    December 2014
    Overall Recruitment Status
    Completed
    Study Start Date
    March 2012 (undefined)
    Primary Completion Date
    May 2012 (Actual)
    Study Completion Date
    June 2012 (Actual)

    3. Sponsor/Collaborators

    Responsible Party, by Official Title
    Principal Investigator
    Name of the Sponsor
    University of Greenwich

    4. Oversight

    Data Monitoring Committee
    Yes

    5. Study Description

    Brief Summary
    This investigation is aimed to examine the effects of two different exercise-oriented protocols on the knee torque-angle relationship of the knee flexors. Thirty two young soccer players were be randomly assigned to three groups: hamstring-eccentric (ECC, n=11), unstable-squatting (UNS, n=11) or control (C, n=10). The ECC and UNS groups performed eighteen sessions over 6 weeks of an injury prevention protocol, using only 3 hamstring-eccentric or unstable-squatting exercises. The angle-torque relationship was measured before and after the training intervention. Voluntary isometric torque was recorded at six test angles, with participants prone (35º-100º; 0º on full extension).
    Detailed Description
    This study utilized a three parallel-groups randomized controlled design, where 3 between-participant conditions, ECC, UNS and C, were tested. Once considered eligible for the study, all participants were familiarized with the testing procedures. Participants attended the laboratory for a pre-training test session, where body mass, height and muscle functional parameters were recorded. Two days after their pre-test, participants including in ECC or UNS started a 6 weeks (18 sessions) training program while the control group did not perform any type of resistance training. Nevertheless, during the 6 weeks intervention period all three groups continued with their normal recreationally physical activity consisting in 2 to 3 sessions per week of soccer training or friendly matches. Two days after the end of the intervention period muscle function was re-tested.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Injury Prevention
    Keywords
    training, soccer, eccentric, lengthening, unstable, squatting

    7. Study Design

    Primary Purpose
    Prevention
    Study Phase
    Not Applicable
    Interventional Study Model
    Parallel Assignment
    Masking
    None (Open Label)
    Allocation
    Randomized
    Enrollment
    32 (Actual)

    8. Arms, Groups, and Interventions

    Arm Title
    Eccentric hamstring exercises
    Arm Type
    Experimental
    Arm Description
    Three workouts per week on non-consecutive days for 6 weeks. 1)Assisted Nordic Curl: Kneeling on the ground with ankles fixed by a partner, participant lowering the trunk to the ground by eccentrically contracting the hamstrings. 2) Eccentric single stiff-legged dead lift: From standing position with the arm crossing over the chest, participant lowering the body toward the ground by flexing the hip joint without bending the support leg knee and raising the other leg until form an straight line with the trunk4 3) Eccentric double stiff-legged dead lift: From standing position with the arm crossing over the chest, participant lowering the body toward the ground by flexing the hip joint without bending the knees until the body parallel with the floor.
    Arm Title
    Unistable exercises
    Arm Type
    Experimental
    Arm Description
    Trained 3 times per week on non-consecutive days for 6 weeks for a total of 18 training sessions. UNS training consisted in the following three exercises: 1) One leg squat: Standing on the floor on one leg only and squat down until knee flexed to 900 and press back up with just that single leg. 2) One leg Squat on Bosu® balance Trainer: Standing on the Bosu® balance Trainer on one leg only and squat down until supported leg knee flexes to 900 and press back up with just that single leg. 3) Forward lunges on a Bosu® balance Trainer: position the forward leg on the Bosu® balance Trainer and squatting with the forward leg.
    Arm Title
    Control
    Arm Type
    Active Comparator
    Arm Description
    Participants did not undergo any resistance training and continued with their regular soccer training.
    Intervention Type
    Other
    Intervention Name(s)
    Eccentric hamstring exercises
    Intervention Description
    Three exercises: 3 sets of 8 repetitions with 1 minute of rest between sets and 2 minutes of rest between exercises
    Intervention Type
    Other
    Intervention Name(s)
    Unistable exercises
    Intervention Description
    Three exercises: 3 sets of 8 repetitions with 1 minute of rest between sets and 2 minutes of rest between exercises
    Intervention Type
    Other
    Intervention Name(s)
    Control
    Intervention Description
    Only soccer training
    Primary Outcome Measure Information:
    Title
    knee torque-angle
    Description
    Isokinetic measurements
    Time Frame
    1 week

    10. Eligibility

    Sex
    Male
    Minimum Age & Unit of Time
    18 Years
    Accepts Healthy Volunteers
    Accepts Healthy Volunteers
    Eligibility Criteria
    Inclusion Criteria: males, recreationally trained football players Read and sign the informed consent Exclusion Criteria: Participants that has undertaken a lower body resistance-training program in the preceding 6 months, Reported a previous lower limb injury

    12. IPD Sharing Statement

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    Compatibility of Different Injury Prevention Exercises in Athletes

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