Opposite SI Joint Stretching for GIRD

Sacroiliac Stretching Improves Glenohumeral Internal Rotational Deficit of the Opposite Shoulder in Baseball Players in a Randomized Control Study

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03421535

Enrollment

Registered

2018-02-05

Start date

2017-05-23

Completion date

2017-05-23

Last updated

2018-02-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Shoulder Impingement

Keywords

Glenohumeral internal rotational deficit, GIRD, Sleeper stretch, SI joint stretch

Brief summary

The purpose of this study is to investigate if stretching the contralateral sacroiliac (SI) joint improves GIRD in baseball players. Additionally, we aimed to compare our SI joint stretching regiment with a classically described sleeper stretch routine.

Detailed description

Abstract: Background: Glenohumeral Internal Rotational Deficit (GIRD) is a well-documented finding in throwing athletes. Hypothesis/Purpose: The purpose of this study is to investigate if stretching the contralateral sacroiliac (SI) joint improves GIRD in baseball players. Additionally, the effect of the SI joint stretch will be compared to that of the classically described sleeper stretch. Study Design: Randomized Controlled Clinical Trial Methods: With the athlete supine and arm abducted 90o, internal rotation of both shoulders was measured in 23 minor league baseball players. Next, each player randomly was assigned to either a control (sleeper stretch of dominant shoulder) or experimental (stretch of the SI joint contralateral to the dominant shoulder) group supervised by a certified athletic trainer. The players performed their own stretches. Finally, the initial two investigators, unaware of to which group the player was assigned, re-measured the end-range internal rotation of each athlete's dominant shoulder.

Interventions

PROCEDURESleeper Stretch

Internal Range of motion of dominant shoulder

PROCEDUREOpposite SI joint Stretch

Internal range of motion of dominant shoulder

Study design

Allocation

RANDOMIZED

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Masking description

Each player was randomly assigned to either a sleeper stretch group or an opposite SI joint stretch group. The investigators were blinded to the treatment groups.

Intervention model description

All 23 players of a minor league baseball team voluntarily participated in the study.

Eligibility

Sex/Gender

MALE

Age

23 Years to 25 Years

Healthy volunteers

Inclusion criteria

* All members a minor league baseball team

Exclusion criteria

* Any active shoulder or back injury or history of shoulder or back injury

Design outcomes

Primary

Measure	Time frame	Description
Shoulder internal ROM after stretching opposite SI joint	Measurement made within 30 minutes of stretching	Internal range of motion of dominant shoulder after stretching opposite SI joint

Secondary

Measure	Time frame	Description
Shoulder Internal ROM after sleeper stretch	Measurement made with 30 minutes of stretching	Internal range of motion of dominant shoulder after sleeper stretch

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026