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Isokinetic assessment of the shoulder rotators: a study of optimal test position.
- Source :
-
Clinical physiology and functional imaging [Clin Physiol Funct Imaging] 2011 May; Vol. 31 (3), pp. 227-32. Date of Electronic Publication: 2011 Jan 13. - Publication Year :
- 2011
-
Abstract
- Background: Isokinetic assessment of the shoulder rotator cuff is a common component of shoulder muscles assessment. Nevertheless, the extensive mobility of the shoulder poses great difficulty in finding a consensus protocol for evaluation.<br />Objective: To select an optimal protocol, among three, based on the best reproducibility and reliability of strength scores derived from internal and external rotator tests.<br />Method: The dominant side external and internal rotator muscles of twelve healthy male subjects were evaluated based on a concentric protocol (60° s(-1) and 240° s(-1) ) in three different test positions: two in lying supine with the arm in either 90° or 45° abduction and one in the seated position with the arm moving in the scapular plane on the dominant shoulder. Subjects were tested twice over 10 days.<br />Results: The two lying installations were associated with the lowest coefficient of variation (7.1-11.8%) and smallest detectable difference (7-15.9 N.m) for peak moment and strength ratios. Consequently, the lying positions were chosen for rotators assessment with 90° of abduction associated with a higher reproducibility for the agonist/antagonist ratios or 45° if some pain was provoked. In any case, the coefficient of variation did not exceed 12%.<br />Conclusion: Based on a reproducibility and reliability analysis, we recommend the testing of isokinetic strength of the shoulder rotators to be conducted in supine lying, with the arm at 90° or 45° abduction in the frontal plane.<br /> (© 2011 The Authors. Clinical Physiology and Functional Imaging © 2011 Scandinavian Society of Clinical Physiology and Nuclear Medicine.)
Details
- Language :
- English
- ISSN :
- 1475-097X
- Volume :
- 31
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Clinical physiology and functional imaging
- Publication Type :
- Academic Journal
- Accession number :
- 21470363
- Full Text :
- https://doi.org/10.1111/j.1475-097X.2010.01005.x