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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: Post Author Corrections: July 14, 2017
doi: 10.1097/JSM.0000000000000434
Original Research: PDF Only

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[degrees], 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[degrees] 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.

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