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Effectiveness of a Posterior Shoulder Stretching Program on University-Level Overhead Athletes: Randomized Controlled Trial

Chepeha, Judy, C., PT, PhD*; Magee, David, J., PT, PhD*; Bouliane, Martin, MD, FRCSC; Sheps, David, MD, MSc, MBA, FRCSC; Beaupre, Lauren, PT, PhD*

Clinical Journal of Sport Medicine: March 2018 - Volume 28 - Issue 2 - p 146–152
doi: 10.1097/JSM.0000000000000434
Original Research

Objective: To determine whether a posterior shoulder stretch was effective in increasing internal rotation (IR) and horizontal adduction (HAd) range of motion (ROM) in overhead athletes identified as having reduced mobility.

Design: Randomized controlled trial (parallel design).

Setting: University-based sports medicine clinic.

Participants: Thirty-seven university-level athletes in volleyball, swimming, and tennis, with IR ROM deficits ≥15°, were randomized into intervention or control groups. No subjects withdrew or were lost to follow-up.

Intervention: The intervention group performed the “sleeper stretch” daily for 8 weeks, whereas the control group performed usual activities.

Main Outcome Measures: Independent t tests determined whether IR and HAd ROM differences between groups were significant at 8 weeks and 2-way repeated-measures analysis of variance tests measured the rate of shoulder ROM change. Subject-reported shoulder pain and function were obtained at each evaluation.

Results: Significant differences were found between the intervention and control groups' IR and HAd ROM at 8 weeks (P < 0.001 and P = 0.003, respectively) compared with baseline (zero weeks) (P = 0.19 and P = 0.82, respectively). Significant improvements in IR were detected in the intervention group at 4 weeks (P < 0.001), whereas HAd demonstrated significant changes only at 8 weeks (P = 0.003). Reported shoulder function (P = 0.002) was different between study groups at 8 weeks.

Conclusion: Overhead, university-level athletes with an IR deficit ≥15° significantly increased their IR and HAd ROM after performing a posterior shoulder stretch for 8 weeks.

Clinical Relevance: Effective management of posterior shoulder tightness through stretching may reduce the incidence of shoulder pathology in overhead athletes.

From the *Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada; and

Division of Orthopaedics, Department of Surgery, Faculty of Medicine, University of Alberta, Edmonton, AB, Canada.

Corresponding Author: Judy C. Chepeha, PT, PhD, Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB T6G 2G4, Canada (

Supported by a grant from the Faculty of Rehabilitation Medicine at the University of Alberta. We would like to thank Juliana Mollins (Research Assistant) and the Department of Physical Education, in particular the coaches and athletes associated with the volleyball, swim, and tennis teams for their assistance and participation in this project. Dr. L. Beaupre receives salary support from Alberta Innovates—Health Solution (formerly Alberta Heritage Foundation for Medical Research) as a Population Health Investigator and the Canadian Institute for Health Research as a New Investigator (Patient Oriented Research).

The authors report no conflicts of interest.

Received May 25, 2016

Accepted January 05, 2017

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