Strength Training for Injury Prevention
Primary Purpose
Wounds and Injuries
Status
Completed
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
Strength & Conditioning
Control
Sponsored by
About this trial
This is an interventional prevention trial for Wounds and Injuries
Eligibility Criteria
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
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm Type
Experimental
Active Comparator
Arm Label
Strength & Conditioning
Control
Arm Description
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.
Athletes in the control group will continue with their usual sports and activities but will not receive any type of training.
Outcomes
Primary Outcome Measures
Y-balance score
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
20 metre sprint
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.
Multiple Jump test
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.
Functional Movement Screen score
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.
Self-reported injury rates
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.
Full Information
1. Study Identification
Unique Protocol Identification Number
NCT02927418
Brief Title
Strength Training for Injury Prevention
Official Title
Strength Training for Injury Prevention
Study Type
Interventional
2. Study Status
Record Verification Date
October 2016
Overall Recruitment Status
Completed
Study Start Date
November 2016 (Actual)
Primary Completion Date
April 9, 2017 (Actual)
Study Completion Date
May 2017 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of Manitoba
4. Oversight
Data Monitoring Committee
No
5. Study Description
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.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Wounds and Injuries
7. Study Design
Primary Purpose
Prevention
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
Outcomes Assessor
Allocation
Non-Randomized
Enrollment
43 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Strength & Conditioning
Arm Type
Experimental
Arm Description
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.
Arm Title
Control
Arm Type
Active Comparator
Arm Description
Athletes in the control group will continue with their usual sports and activities but will not receive any type of training.
Intervention Type
Behavioral
Intervention Name(s)
Strength & Conditioning
Intervention Type
Behavioral
Intervention Name(s)
Control
Primary Outcome Measure Information:
Title
Y-balance score
Description
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.
Time Frame
4 months
Secondary Outcome Measure Information:
Title
20 metre sprint
Description
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.
Time Frame
4 months
Title
Multiple Jump test
Description
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.
Time Frame
4 months
Title
Functional Movement Screen score
Description
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.
Time Frame
4 months
Title
Self-reported injury rates
Description
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.
Time Frame
4 months
10. Eligibility
Sex
All
Minimum Age & Unit of Time
12 Years
Maximum Age & Unit of Time
16 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
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
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Joanne Parsons, PhD
Organizational Affiliation
University of Manitoba
Official's Role
Principal Investigator
12. IPD Sharing Statement
Plan to Share IPD
No
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Strength Training for Injury Prevention
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