Youth Throwers Respond to Stretching (Safethrow)

March 24, 2018 updated by: Charles Metzger, M.D., Metzger, Charles, M.D.

Shoulder Posterior Capsular Contracture in Youth Baseball Players: It Can be Improved by Stretching

The purpose of this study is to document the rates of youth baseball player demographics, incidence of arm pain, usage of different pitch types, and degree of internal rotation contracture in the throwing versus the non-throwing shoulder. We followed a subgroup of players for a year to see if a particular stretch would help reduce the internal rotation contracture.

Study Overview

Status

Unknown

Conditions

Detailed Description

Introduction: Overhead throwing can cause contracture of the shoulder posterior-inferior glenohumeral ligament which can lead to injuries such as superior labral tears. We show that instruction on stretching can favorably alter progression of posterior contractures.

Methods: 1261 male baseball players ages 7-15 completed a questionnaire and shoulder examinations. Measurements of rotation of both shoulders were made with the subjects in the supine position with the scapula stabilized. Glenohumeral internal rotation deficit (GIRD) was calculated. Pitch type and player position, among other variables, were recorded. The prospective cohort was 175 players who were examined twice a year apart. Players with excessive GIRD (exGIRD) were given stretching instruction, and the control group was those without exGIRD who were not given instruction. Change in GIRD as a result of this intervention was documented.

Study Type

Observational

Enrollment (Actual)

1261

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

4 years to 11 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

1261 male baseball players ages 8 to 15

Description

Inclusion Criteria:

  • male
  • baseball player
  • ages 8 to 15

Exclusion Criteria:

  • female (suspected hormonal/gender influences on capsular elasticity)
  • prior throwing arm surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Cross-Sectional

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Degree of decrease in internal rotation contracture of the shoulder
Time Frame: One year
GIRD is the Glenohumeral Internal Rotation Deficit. It is the difference in the internal rotation of the throwing shoulder compared to the non-throwing shoulder
One year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Metzger, Charles, M.D.

Investigators

  • Principal Investigator: Charles L Metzger, MD, Memorial Hermann Health System

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2008

Primary Completion (Anticipated)

September 1, 2019

Study Completion (Anticipated)

September 1, 2019

Study Registration Dates

First Submitted

February 6, 2010

First Submitted That Met QC Criteria

February 8, 2010

First Posted (Estimate)

February 9, 2010

Study Record Updates

Last Update Posted (Actual)

March 27, 2018

Last Update Submitted That Met QC Criteria

March 24, 2018

Last Verified

March 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Safethrow01

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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