Date of Award
1996
Document Type
Scholarly Project
Degree Name
Master of Physical Therapy (MPT)
Department
Physical Therapy
First Advisor
Beverly Johnson
Keywords
Knee -- physiology; Knee Injuries -- rehabilitation; Muscle Contraction -- physiology
Abstract
Technological advances in isokinetic devices allow the clinician to objectively assess and rehabilitate injuries using concentric and eccentric contractions at different speeds. The purpose of this research project is to establish concentric and eccentric normative ratio values of the quadriceps muscle on the Kinetic Communicator (Kin-Com, Chattecx Corp., Chattanooga, TN) dynamometer. A sample of 19 females and 12 males aged 20-38 (mean for females = 24.32 ± 3.87, mean for males = 27.67 ± 5.80) were tested on the KinCom for maximum concentric and eccentric torque values during knee extension using a 70° range of motion at 90 and 1200/sec. The actual test included three sets of three repetitions of voluntary maximum isokinetic contractions of the quadriceps at each speed. The mean maximal eccentric/concentric ratio (ft-Ibs) was 1.32 ± 0.31 for the females and 1.30 ± 0.18 for the males at 900/sec. At 1200/sec, the ratio was 1.34 ± 0.33 for the females and 1.34 ± 0.30 for the males. These values can be used clinically as an indicator of progress or for formulating accurate rehabilitation goals for patients with knee involvement.
Recommended Citation
Ho, Donna, "Concentric and Eccentric Isokinetic Normative Ratio Values of the Quadriceps Muscle in Asymptomatic Knee Subjects" (1996). Physical Therapy Scholarly Projects. 216.
https://commons.und.edu/pt-grad/216