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Date of Award


Degree Type

Thesis (On-Campus Access Only)

Degree Name

Master of Physical Therapy (MPT)

First Advisor

Jay Salzman, BS, PT

Second Advisor

John Medeiros, PhD, PT


The purpose of this study was to compare peak torque values for isokinetic eccentric contractions of the right hamstrings and quadriceps of 15 young male adults (ages 20-30) and 13 older male adults (ages 50 and older). The eccentric flexion/extension ratios of the two populations were also compared. Eccentric testing at 120 degrees per second was performed on the KIN-COM isokinetic dynamometer. The results of the mean difference in peak torque for the hamstrings and quadriceps between the two groups of subjects indicated that the younger group had a significantly higher (p < .0001) eccentric peak orque than the older group. The mean difference between flexion/extension ratios of the two groups indicated that the young group did not significantly differ (p < .9917) from the older group. These findings illustrate the decline in isokinetic eccentric peak torque of the hamstrings and quadriceps with aging.


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