Abstract
The purpose of this investigation was to determine the interrater reliability of peak torque and total work values obtained with isokinetic measures of knee flexion and extension. Eight male and eight female students were evaluated on four occasions by four different examiners (range of isokinetic test experience: 0 to 10 yrs) using a standardized isokinetic measurement protocol. Subjects were randomly assigned to participate in a test sequence determined by a 4 × 4 balanced Latin square. Peak torque and total work values at 60°/sec and 180°/sec were obtained for the concentric measures of knee extension and flexion. The measures of peak torque and total work were corrected for the effects of gravity. Intraclass correlation coefficients and standard error of measurement estimates were used to estimate the interrater reliability for each test condition (test speed × muscle group). Intraclass correlation coefficient values ranged from .90 to .96 for peak torque and .90 to .95 for total work. Standard error of measurement estimates ranged from 8.9 to 13.3 Nm for peak torque and 11.3 to 16.8 Nm for total work. The results of this investigation demonstrate that reliable measures of isokinetic muscle performance of knee extension and flexion may be obtained by four clinicians with varied experience when following a standardized measurement protocol.
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- Bohannon R. W., Gajdosik R. L., LeVeau B. F. Isokinetic knee flexion and extension torque in the upright sitting and semireclined sitting positions. Phys Ther. 1986 Jul;66(7):1083–1086. doi: 10.1093/ptj/66.7.1083. [DOI] [PubMed] [Google Scholar]
- Kramer J. F. Reliability of knee extensor and flexor torques during continuous concentric-eccentric cycles. Arch Phys Med Rehabil. 1990 Jun;71(7):460–464. [PubMed] [Google Scholar]
- Kues J. M., Rothstein J. M., Lamb R. L. Obtaining reliable measurements of knee extensor torque produced during maximal voluntary contractions: an experimental investigation. Phys Ther. 1992 Jul;72(7):492–504. doi: 10.1093/ptj/72.7.492. [DOI] [PubMed] [Google Scholar]
- Magnusson S. P., Geismar R. A., Gleim G. W., Nicholas J. A. The effect of stabilization on isokinetic knee extension and flexion torque production. J Athl Train. 1993 Fall;28(3):221–225. [PMC free article] [PubMed] [Google Scholar]
- McCleary R. W., Andersen J. C. Test-retest reliability of reciprocal isokinetic knee extension and flexion peak torque measurements. J Athl Train. 1992;27(4):362–365. [PMC free article] [PubMed] [Google Scholar]
- Rothstein J. M., Lamb R. L., Mayhew T. P. Clinical uses of isokinetic measurements. Critical issues. Phys Ther. 1987 Dec;67(12):1840–1844. doi: 10.1093/ptj/67.12.1840. [DOI] [PubMed] [Google Scholar]
- Sobal J., Klein H., Graham D., Black J. Health concerns of high school students and teachers' beliefs about student health concerns. Pediatrics. 1988 Feb;81(2):218–223. [PubMed] [Google Scholar]
- Tredinnick T. J., Duncan P. W. Reliability of measurements of concentric and eccentric isokinetic loading. Phys Ther. 1988 May;68(5):656–659. doi: 10.1093/ptj/68.5.656. [DOI] [PubMed] [Google Scholar]