Muscle weakness of knee osteoarthritis: the exercise effects may be selective
Abstract：Aim Muscle strength exercise can reduce the muscle inhibition of knee osteoarthritis (OA). The selective inhibition of knee extensors and flexors exists at spinal level so that doing extensors and flexors exercise equally should have unequal effects. The study tried to analyze whether the selection exists. Methods 18 knee OA patients (26 involved limbs) had taken part in a muscle exercise procedure for 3- 6 weeks (3 times per week), which had an equal intensity between knee extensors and flexors. The peak torque (PT), best work repetition (BWR) and torque acceleration energy (TAE) were tested at 60° /s, 120° /s and 180° /s before and after the exercise. Results The improving extents of flexors parameters such as BWR at 60° /s, PT and TAE at 120° /s, PT and TAE at 180° /s were better than those of extensors significantly. Conclusion Muscle selection of the exercise effects was shown in knee OA patients that knee flexors strength were improved more significantly than extensors strength. For a matter of fact that knee extensors play a more important role than flexors, we should pay much more attention on knee extensors exercise.
Keywords：osteoarthritisexercisemuscle inhibitiontreatment outcomeknee joint
Publication Date：2003-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：2( 2470-2471 )