Effect of considering stability requirements on antagonistic muscle activities using a musculoskeletal model of the human lumbar spine
محل انتشار: بیستمین کنفرانس مهندسی پزشکی ایران
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 758
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شناسه ملی سند علمی:
ICBME20_103
تاریخ نمایه سازی: 25 فروردین 1394
چکیده مقاله:
The recruitment pattern of trunk muscles is determined using a three-dimensional model of the spine with two joints and six symmetric pairs of muscles in which both equilibrium and stability requirements are satisfied. Model predictions are verified using Anybody Modeling System (AMS) and Abaqus. The model is used to test the hypothesis that antagonistic muscle activities are necessary for the spinal stability. The model with stability constraints predicts muscle activities greater than those predicted without stability consideration. In agreement with experimental data, the stability-based model predicts antagonistic muscle activities. It is shown that spinal stability increases with trunk flexion and further improves at heavier tasks.
کلیدواژه ها:
نویسندگان
Majid Hajihoseinali
Department of Mechanical Engineering Sharif University of Technology Tehran, Iran
Navid Arjmand
Department of Mechanical Engineering Sharif University of Technology Tehran, Iran
Hasan Nickpour
Department of Mechanical Engineering Sharif University of Technology Tehran, Iran
Farzam Farahmand
Department of Mechanical Engineering Sharif University of Technology Tehran, Iran