Background: Few studies have examined muscular activation levels during commonly prescribed range of motion (ROM) exercises in a post-surgical superior labral tear anterior to posterior (SLAP) repair patient group. The present cross-sectional study compared shoulder musculature activation levels between postoperative SLAP repair patients with those of a healthy control cohort performing commonly prescribed postoperative shoulder exercises. The maximal ROM (MAX ROM) achieved during exercises was also studied. Methods: Ten healthy volunteers and nine postoperative patients (post-SLAP) performed 10 rehabilitative exercises during the recording of electromyogram (EMG) activity from six shoulder muscles. Root mean squared amplitudes normalized to a submaximal reference voluntary contraction (RVC) were analyzed to compare exercises. A two-dimensional video of humeral-trunk angle captured the shoulder ROM for each exercise. Results: One significant difference was found between groups; the anterior deltoid mean activity across all exercises was found to be higher in the post-SLAP group 53% RVC [95% confidence interval (CI) = 48% to 57% RVC] compared to the healthy group 46% RVC (95% CI = 42% to 50% RVC) (p = 0.02). Post-SLAP patients generated the least MAX ROM performing the Pendulum exercise 97°(95% CI = 88° to 107°) and the greatest during Forward Bow 131° (95% CI = 121° to 142°), (p = 0.002). Conclusions: The present study identifies the shoulder muscle EMG and MAX ROM obtained during rehabilitation exercise in patients’ after SLAP repair. Knowledge of these parameters will help clinicians match the appropriate exercise to meet the desired objective for the particular rehabilitation goal.
|Number of pages||9|
|Journal||Shoulder and Elbow|
|State||Published - Jul 1 2012|
Bibliographical noteFunding Information:
The authors acknowledge Dan Miller of Rehab Innovations for providing the Upper Extremity Ranger™ used in this study. Additionally we would like to thank Chris Melton, Doug Long and Dave Junkin for their assistance with data collection and subject recruitment. The authors would like to also acknowledge grant support from the Department of Orthopedics and Sports Medicine, University of Kentucky allowing completion of this project. Conflicts of Interest None declared
The authors acknowledge Dan Miller of Rehab Innovations for providing the Upper Extremity Ranger? used in this study. Additionally we would like to thank Chris Melton, Doug Long and Dave Junkin for their assistance with data collection and subject recruitment. The authors would like to also acknowledge grant support from the Department of Orthopedics and Sports Medicine, University of Kentucky allowing completion of this project.
© 2012 British Elbow and Shoulder Society.
- glenoid labrum
- range of motion
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Physical Therapy, Sports Therapy and Rehabilitation