The Reliability of Three Isokinetic Knee-extension Angle-specific Torques

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
David H. Perrin, Former Provost and Executive Vice Chancellor (Creator)
The University of North Carolina at Greensboro (UNCG )
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Abstract: To determine the reliability of concentric quadriceps muscle torque at 30°, 60 °, and 75 ° of knee extension, 25 female university students were studied. Each subject was tested on the Kin-Com isokinetic dynamometer on 2 separate days, 7 days apart. The dynamometer's speed was set at 60 7s. Intraclass correlation coefficients for 30°, 60°, and 75 ° were 0.84 (p<.01), 0.87 (p<.01), and 0.83 (p<.01), respectively. The standard errors of the measure were 5 .92 N·m, 7 .65 ·N·m, and 7.35 N•m, respectively. Based on the instrumentation and protocol used in this study, we believe angle-specific torques have good reliability. Because of the error size, clinicians using similar methodology to determine angle-specific torques should be cautious when comparing differences between angle- specific torques of less than 12 to 16 N·m.

Additional Information

Journal of Athletic Training, 28: 227-229
Language: English
Date: 1993
quadriceps, knee extension, muscle torque, isokinetic dynamometer, female, angle-specific torques

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