Effect of test protocol on concentric and eccentric torque production of the rotators of the shoulder

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
David H. Perrin, Provost and Executive Vice Chancellor (Creator)
Institution
The University of North Carolina at Greensboro (UNCG )
Web Site: http://library.uncg.edu/

Abstract: The purpose of this investigation was to determine the effect of test protocol on concentric and eccentric torque production of the rotators of the shoulder. Twenty-eight female subjects were randomly assigned to participate in either a continuous (no pause between concentric and eccentric contractions) or interrupted (5-second pause between contractions) measurement protocol. A Kin-Corn dynamometer (Chattecx Corp., Hixson, TN) was used to obtain average torque measurements at so and 180 deg/sec for the shoulder rotators. Analysis of variance determined that there were no significant (p > 0.05) differences in average torque between test protocols for either muscle group. Intraclass correlation coefficients (ICCs) ranged from 0.57 to 0.88 for the continuous protocol and from 0.83 to 0.94 for the interrupted protocol. Standard error of measurement estimates ranged from 0.7 to 1.5 Nm for the continuous protocol and from 0.5 to 1.4 Nm for the interrupted protocol. The results of this investigation demonstrate no differences in torque production between continuous and interrupted test protocols, although the interrupted measurement protocol provides greater reliability and precision of measurement than the continuous protocol when assessing torque production of the rotators of the shoulder.

Additional Information

Publication
Isokinetics and Exercise Science, 4: 176-181
Language: English
Date: 1994
Keywords
Rest interval, Shoulder internal/external rotation, Test reliability