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A prospective, controlled, randomized study.

To establish reference values for prediction of concentric isokinetic knee strength and power in a sample of nonathletic men and women.

Adequate interpretation of knee isokinetic strength and power relies on a representative frame of reference. However, none of the most widely cited prediction studies used a randomly selected sample of nonathletic subjects, therefore limiting the clinical application of these studies.

We evaluated the concentric right and left knee extensor and flexor peak torque, total work, set total work, average power, and torque acceleration energy (Cybex 6000 System) in 96 healthy subjects (45 men and 51 women, aged 20 to 80), randomly selected from more than 8000 individuals.

By stepwise regression analysis, we found that gender, age, weight, height, and regular …