Activation patterns of quadriceps and gastrocnemius muscles during a step-up task in patients with osteoarthritis
Journal Title: Journal of Society of Indian Physiotherapists - Year 2018, Vol 2, Issue 2
Abstract
IntroductionIt is often seen that patients with Osteoarthritis OA continue to have reduced Quadriceps activity even after long term rehabilitation suggesting that there might be overactivity of other muscles Hence the aim of this study was to find if there existed a difference in the muscle activity of Quadriceps and Gastrocnemius during a step up task in patients with OA as compared to normal individualsAimTo assess and compare the EMG activation of Gastrocnemius and Rectus femoris in patients with OA knee and in asymptomatic individualsDesignLaboratory controlled exploratory designMaterial and Methods35 subjects with OA and 34 asymptomatic individuals were taken up for the study Subjects were age gender and BMI matchedSubjects underwent an isometric strength test on Isokinetic Dynamometer The Maximum Voluntary Contraction MVC with an EMG machine was recorded Subjects stepped up on a single step 10 times during which EMG activity was recorded from Rectus Femoris Lateral Gastrocnemius and Medial Gastrocnemius Data was analysed from the 6th 7th and 8th trials after normalizing raw amplitude values to MVC valuesStatistical analysisIndependent t test was used to compare muscle activity percentage values between groups as well as within groupsResultsBetween comparison showed a significant increase in the EMG activity of Lateral Gastrocnemius pConclusionThe present study showed a significant difference between Quadriceps and Gastrocnemius muscle activities during a step up task in OA patients as compared to normal individualsKeywordsEMG activity Gastrocnemius Osteoarthritis Quadriceps Step up task
Authors and Affiliations
Anish Mazumder, Soni Sathish, Sayli Rajadhyaksha, Ramesh Debur
Keywords
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