Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
August 20, 2026Physical Therapy KoreaOpen Access

Comparison of Shoulder Rotation Control, Strength, and Range of Motion During Internal and External Rotation in Young Male Adults With and Without Subacromial Impingement Syndrome

View Full Paper
Ask AI
Bookmark
Share

Authors

JPJu-Hee ParkYWYul-ji WonOKOh-Yun Kwon

Discussion

Loading...

Member takes

Overview

Comparative study reveals reduced internal rotation mobility and altered humeral control in adults with subacromial impingement syndrome, indicating key targets for clinical assessment.

Key Points

  • To compare humeral head rotational control via olecranon marker displacement, internal and external rotation strength, and range of motion between young men with and without subacromial impingement syndrome.
  • Recruited 40 male participants classified into subacromial impingement syndrome (SIS) and non-SIS groups (N=40).
  • Assessed dominant-side shoulder internal rotation (IR) and external rotation (ER) range of motion (ROM), isometric strength, and rotational control.
  • Quantified rotational control by measuring olecranon marker displacement during IR and ER at 90° shoulder abduction using a 2D motion-tracking system and independent t-tests (significance at p < 0.05).
  • The SIS group exhibited significantly reduced shoulder IR ROM and significantly greater vertical displacement of the olecranon marker during IR compared with the non-SIS group (p < 0.05).
  • No significant between-group differences were observed for ER ROM, isometric IR or ER strength, or horizontal olecranon marker displacement during IR or ER (p > 0.05).

Cite This Study

Park et al. (2026) studied this question.

synapsesocial.com/papers/6a86b56c8a91293e6a1cccd8https://doi.org/10.12674/ptk.2026.33.2.149
View Full Paper
Ask AI
Bookmark
Share

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Comparison of the Post Treatment Outcomes of a Conservative Physiotherapy Protocol for Subacromial Impingement Syndrome in Terms of Acromion Morphology2024
  2. 2Children and adolescents with all forms of shoulder instability demonstrate differences in their movement and muscle activity patterns when compared to age- and sex-matched controls2024 · 7 citations
  3. 3Association Between Postoperative Subacromial Impingement Syndrome and Functional Recovery After Arthroscopic Rotator Cuff Repair in Elderly Patients: A Single-Center Retrospective Study2026
  4. 4Kinematics and Electromyographic Analysis of Three Types of Internal Rotation in the Shoulder2026
  5. 5Altered Gluteus Maximus and Latissimus Dorsi Activation in Subacromial Impingement Syndrome: Implications for Kinetic Chain Dysfunction2026