Clinical trial NCT04687696: Comparison of The Effects of Different Stretching Techniques in Overhead Athletes
Official title: Comparison of The Effects of Different Stretching Techniques in Overhead Athletes With Glenohumeral Internal Rotation Deficit
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Glenohumeral Internal Rotation Deficit
Lead sponsor: Dokuz Eylul University
Sponsor class: OTHER
First posted: 2020-12-29
Enrollment: 78
Sex: ALL
Minimum age (years): 13
Maximum age (years): 40
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: 78 overhead athletes with Glenohumeral Internal Rotation Deficit (GIRD) will be included in this study. Participants will be randomly divided into 3 different groups of 26 people. In each group will be applied posterior shoulder stretching exercises (PSSE) performed with different Muscle Energy Techniques (MET).

Detailed description: Post Isometric Relaxation Group (PIRG) participants will perform a PSSE with post isometric relaxation (PIR) technique, Isolytic Stretching Group (ISG) participants will perform a a PSSE with isolytic stretching technique and Static Stretching Group Group (SSG) participants will perform a PSSE with static stretching technique. All exercises will be performed in the modified crossbody position, for 5 times a week total of 6 weeks. Subacromial space, posterior capsule and muscle tendon thicknesses will be measured using a 7-12 MHz linear transducer with USG (LOGIQ e Ultrasound, GE Healthcare, USA). Athletes' GIRD results and rotational ROM measurements and Posterior shoulder tightness will be measured and recorded using a bubble inclinometer (Fabrication End Inc, New York, USA). Scapula kinematics (posterior tilt, upward rotation) will be evaluated with a digital inclinometer. Shoulder and scapular muscles will be evaluated with hend held dynamometer. Tightness of Levator scapulae and pectoralis minor will be assessed. The upper extremity functional performance of the athletes will be evaluated with the Functional Throwing Performance Index (FTPI). Evaluations will be performed before training program and repeated after 6 weeks of training, and at the 1st, 3th and 6th months after training program is completed and the effects of different muscle energy techniques (MET) will be compared. Investigators hypothesized 6 weeks of PSSE with different MET would have different effects on Acromio-Humeral Distance, posterior capsule thickness, muscle tendon thickness, rotational ROM measurements, scapula kinematics, muscle strength, posterior shoulder tightness and performance on overhead athletes with GIRD and the effects of MET would be superior to static stretching.

Eligibility criteria: Inclusion Criteria:

* Being overhead athlete
* Glenohumeral internal rotation range of motion of the affected shoulder should be less than other shoulder and bilateral shoulder internal rotation range of motion difference should be ≥15 º

Exclusion Criteria:

* Shoulder pain required medical attention for the last year.
* Current shoulder pain
* Cervical pain during upper extremity movement
* History of fracture to the shoulder girdle
* Systemic musculoskeletal disease
* History of shoulder surgery,
* Glenohumeral instability (positive apprehension, relocation, or positive sulcus test) or positive findings for a full thickness rotator cuff tear (positive lag sign, positive drop arm test, or marked weakness with shoulder external rotation)

Primary outcomes:
measure: Shoulder internal rotation range of motion
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
Secondary outcomes:
measure: Subacromial space
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Posterior shoulder tightness
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Shoulder Total rotation range of motion
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Functional Throwing Performance Index
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Posterior capsule thickness
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Muscle tendon thickness
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Scapula kinematics
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Muscle Shortness
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Eccentric strength
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
measure: Isometric strength
timeFrame: baseline, 6 weeks of training, at the 1st, 3th and 6th months
Other outcomes:
Locations:
Study officials:
affiliation: Dokuz Eylul University
name: Sevgi S Yeşilyaprak, Phd
role: STUDY_DIRECTOR
References: