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There are a few ways to perform isometric exercises. The result of trying to move after a pause is a more difficult concentric phase. Adding a 3 count pause to the middle of an exercise allows energy generated from the stretch reflex to dissipate. The isometric exercises for the Osteoarthritis of Knee With the right knee over a bolster straighten the knee by tightening muscles on top of the thigh. The molecular weight of hyaluronan increased from 2.11 to 2.40×10 6( P<0.05) and the viscosity of joint fluid increased from 45.8 to 59.8 mPas after 12 weeks of exercise ( P<0.05). You can add isometrics to an exercise, at the end of regular sets or perform them on their own. Extension torque at 30 and 60° knee flexion significantly increased from 4.7 to 6.9 kgm (47% increase, P<0.001) and from 10.8 to 12.6 kgm (17% increase, P<0.005) after 12 weeks of exercise. Results: Pain score decreased from 3.9 to 2.3 after 12 weeks of exercise ( P<0.001). Isometric muscle torque at 30 and 60° flexion, pain as measured using the visual analog scale and biochemical markers in joint fluid were evaluated before and after the exercise. The patients performed isometric quadriceps exercise for 3 months. Objective: The purpose of this study was to analyze the biochemical changes in the joint fluid, and pain relief resulting from isometric quadriceps exercise in patients with osteoarthritis of the knee.ĭesign: Nineteen osteoarthritic knees in 17 patients with joint effusion were included. Isokinetic exercises have a greater effectiveness than isometric exercises for muscle strength and pain in patients with knee osteoarthritis.