Comparison of the knee muscles isometric strength and functional performance between healthy and knee arthritis men

Abstract

Background: The risk of arthritis increases with age. Knee arthritis causes pain and inflammation of this joint. These side effects can possibly affect muscle strength and performance.

Objective: The purpose of this study was to compare the knee flexor and extensor muscles isometric strength and functional performance between healthy and knee arthritis men.

Methods: This case-control study was conducted in Isfahan (2015) on knee arthritis male patients (case group, n=22) and healthy male (control group, n=22). The isometric strength of knee flexor and extensor muscles was measured by dynamometer. Functional ability was assessed with using stair ascending and descending, 5 time sit-to-stand and timed up and go tests. Data were analyzed by independent t test.

Findings: Mean age of patients and control groups were 52.6±6.27 and 49.8±4.19, respectively. The knee flexor and extensor muscles strength in patients was significantly less than healthy peoples (P< 0.001). Functional performance of patients in stair ascending and descending (P=0.001), 5 time sit-to-stand (P< 0.001) and timed up and go (P