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Velocity Spectrum Study of Knee Flexion and Extension in Normal Adults: 60 to 500 deg/sec

1991; IOS Press; Volume: 1; Issue: 3 Linguagem: Inglês

10.3233/ies-1991-1303

1878-5913

Pamela Hall, Marilyn A. Roofner,

Muscle activation and electromyography studies

The purpose of this study was to examine normative data for uninjured adults when tested isokinetically over a velocity spectrum. Sixty adults, 30 males and 30 females, between the ages of 20 and 62, were tested for quadriceps femoris and hamstring peak torque, quadriceps femoris peak torque/body weight ratio, quadriceps femoris average work, quadriceps femoris average power, and quadriceps femoris angle of peak torque. Subjects were tested at 60, 180, 300, 400, and 500 deg/sec. Mean isokinetic values versus speed were determined for both males and females to allow visual analysis of the change in these parameters over the velocity spectrum. Personal data, including reported weekly exercise regimen, were assessed using Pearson correlation coefficients to analyze any association among demographic factors and isokinetically produced values at 180 deg/sec. Finally, a regression analysis was used to formulate an equation to predict peak torque, average work, and average power for the right quadriceps femoris at 180 deg/sec.