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Trial record 100 of 10364 for:    strength

Strength Training for Injury Prevention

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. Identifier: NCT02927418
Recruitment Status : Completed
First Posted : October 7, 2016
Last Update Posted : May 9, 2017
Information provided by (Responsible Party):
University of Manitoba

Brief Summary:
The purpose of this study is to explore the effects of a strength & conditioning (S & C) program on risk factors for injury (Y-balance and Functional Movement Screen scores), as well as parent reported injury occurrence in 12-16 year old male and female athletes. Forty girls and 40 boys aged 12-16 will be recruited; half will participate in supervised S & C sessions 2-3x/week while the other half will continue with their regular sports and activities. Risk factors for injury and performance indices (20 m sprint and multiple jump test) will be assessed before and after the 4 month study. Injury occurrence will be recorded via bi-weekly phone calls to the parent and athlete.

Condition or disease Intervention/treatment Phase
Wounds and Injuries Behavioral: Strength & Conditioning Behavioral: Control Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 43 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Strength Training for Injury Prevention
Actual Study Start Date : November 2016
Actual Primary Completion Date : April 9, 2017
Actual Study Completion Date : May 2017

Arm Intervention/treatment
Experimental: Strength & Conditioning
Supervised S & C program based on the Long Term Athlete Development Model. Participants will attend 2-3 sessions per week for about one hour each session for 4 months. The comprehensive program will include strength and power training as well as plyometrics, agility and flexibility exercises.
Behavioral: Strength & Conditioning
Active Comparator: Control
Athletes in the control group will continue with their usual sports and activities but will not receive any type of training.
Behavioral: Control

Primary Outcome Measures :
  1. Y-balance score [ Time Frame: 4 months ]
    Using the Y Balance Test Kit (Functional Movement Systems, Inc., Chatham, Virginia), the athlete stands on one leg, hands on hips, while pushing a wooden block as far forward as possible with the opposite foot. The displacement of the block is recorded. The athlete is allowed 4 practice trials in each of the 3 test directions: anterior, posteromedial and posterolateral. Three test trials are then conducted for each leg in each direction, with short rest breaks between trials. The average reach distance for each leg for each direction will be normalized to leg length and used in analyses. This test has shown moderate to excellent reliability. Lower scores and asymmetries on the Y-balance test have been linked with an increased risk of injury.

Secondary Outcome Measures :
  1. 20 metre sprint [ Time Frame: 4 months ]
    Athletes will perform 3 trials of a 20 metre sprint, with their time at 10 m and 20 m recorded. Timing will be done using a photo-electric timing system (SmartSpeed Pro, Fusion Sports, Chicago, USA). Each subject will wear a radio-frequency identification (RFID) bracelet assigned at the Open House sign-in; this device will allow timing for the sprint test. The fastest of the 3 trials will be used in analysis.

  2. Multiple Jump test [ Time Frame: 4 months ]
    Athletes will perform 3 different types of jumps. For each of the jumps the athlete stands on a Smart Jump Mat (SmartJump, Fusion Sports, Chicago, USA), and holds a dowel across the shoulders, behind the head. A static jump requires the athlete to crouch down for a jump, pause at the bottom, and then jump as high as possible. A countermovement jump requires the athletes to crouch down and immediately jump back up for maximum height. Three submaximal practice trials of each jump will be done, followed by 3 test trials. The goal is maximum vertical jump, measured by time in the air. Then a series of elastic jumps, maximizing height but minimizing time on the mat, will be done for 60 seconds. The athletes will have a short, submaximal practice trial first. The jump tests will allow for a description of the athletes' power qualities, which are important for sport performance.

  3. Functional Movement Screen score [ Time Frame: 4 months ]
    The FMS is a series of 7 tests including deep squat, hurdle step, in-line lunge, shoulder mobility, active straight leg raise, trunk stability push-up, and rotary stability tests. The intent of the test is to screen athletes for the ability to complete functional activities that underlie more complex athletic skills. A low score on the FMS has been related to increased injury risk.

  4. Self-reported injury rates [ Time Frame: 4 months ]
    Injury rates will be recorded during the study period by asking parents to contact the researcher when an injury occurs. A research assistant will also make bi-weekly phone calls to the parents/athletes in the study to ask about injury occurrence to ensure all injuries are noted. The type of injury (acute or overuse), involved body part, and treatment received will be documented as reported by the parent. No health identification numbers will be collected or healthcare practitioners contacted.

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years to 16 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Athletes between 12 and 16 years of age, actively participating in organized sport

Exclusion Criteria:

  • Any condition or injury that will place the athlete at risk during testing or training

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 identifier (NCT number): NCT02927418

Sponsors and Collaborators
University of Manitoba
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Principal Investigator: Joanne Parsons, PhD University of Manitoba

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Responsible Party: University of Manitoba Identifier: NCT02927418     History of Changes
Other Study ID Numbers: HS20030
First Posted: October 7, 2016    Key Record Dates
Last Update Posted: May 9, 2017
Last Verified: October 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Wounds and Injuries