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Article type: Research Article
Authors: Brown, Lee E.a; *; ** | Whitehurst, Michaela; *** | Bryant, Jennifer R.a; **** | Buchalter, David N.a; *****
Affiliations: [a] South Palm Orthopedics, Florida Atlantic University, and American Med-Care Center
Note: [*] Exercise Physiologist, South Palm Orthopedics, Delray Beach, FL.
Note: [**] Address reprint requests to Lee E. Brown, MEd, CSCS, South Palm Orthopedics, 16244 South Military Trail, Suite 590, Delray Beach, FL 33484.
Note: [***] Human Performance Laboratory, Florida Atlantic University, Boca Raton, FL.
Note: [****] Fitness Director, American Med-Care Center and Rehabilitation Facility, Palm Springs, FL.
Note: [*****] South Palm Orthopedics, Delray Beach, FL.
Abstract: The purpose of this study was to assess the test-retest reliability of the Biodex System 2 isokinetic dynamometer. Twenty subjects performed knee concentric reciprocal extension/flexion exercise on 2 consecutive days, separated by 24 hours. Peak torque (PT), total work (TW), average power (AP), and joint angle at peak torque (JA) were collected from three repetitions across a velocity spectrum of 60, 120, 180, 240, 360, and 450 deg/sec. Correlation values between days 1 and 2 for PT, TW, and AP for both extension and flexion ranged from 0.86 to 0.98. The JA correlations ranged from 0.22 to 0.69. Also, extension and flexion mean values for PT, TW, AP, and JA on day 1 were not significantly different (p < 0.05) from the mean values derived from day 2, with the exception of flexion JA at 60 deg/sec. It was concluded that the Biodex System 2 isokinetic dynamometer is a highly reliable instrument for assessing reciprocal concentric isokinetic parameters of knee extension/flexion.
Keywords: Reliability, Biodex System 2, knee extension/flexion
DOI: 10.3233/IES-1993-3307
Journal: Isokinetics and Exercise Science, vol. 3, no. 3, pp. 160-163, 1993
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