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Bilateral upper extremity trunk model for cross-country sit-skiing double poling propulsion: model development and
Xue Chen1, Yi Huang1, Liang Jiang1
1Biomechanics Lab, Department of Mechanics, School of Aerospace Engineering, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Beijing, 100081, People's Republic of China.
Medical & Biological Engineering & Computing
|December 6, 2022
Summary
Researchers developed a new musculoskeletal model for cross-country sit-skiing to study shoulder injuries. This validated bilateral upper extremity trunk (BUET) model aids in understanding muscle imbalances and subacromial impingement syndrome in skiers.
Area of Science:
- Biomechanics
- Sports Science
- Musculoskeletal Modeling
Background:
- Subacromial impingement syndrome is common in cross-country sit-skiing, often linked to muscle imbalances.
- Existing musculoskeletal models do not adequately represent the biomechanics of this specific sport.
Purpose of the Study:
- To establish and validate a bilateral upper extremity trunk (BUET) musculoskeletal model for cross-country sit-skiing.
- To provide a tool for studying muscle activation and shoulder joint movement in this athletic population.
Main Methods:
- Spliced three existing OpenSim models to create a 17-segment, 35-degree-of-freedom, 472-actuator upper limb model.
- Modeled clavicle, scapula, and lumbar vertebrae with specific joint configurations.
- Collected kinematic, kinetic, and surface EMG data during maximal effort interval tests using motion capture and ergometry.
Main Results:
- The developed BUET model demonstrated comparable simulated muscle activation patterns to experimental EMG data.
- The model's muscle-driven capabilities were validated, showing its functional accuracy.
- Rotator cuff muscle geometry was accurately represented in the model.
Conclusions:
- The validated BUET musculoskeletal model is suitable for cross-country sit-skiing.
- This model serves as a valuable resource for researchers investigating shoulder joint biomechanics and muscle function in skiers.
- The model is publicly available for further research and application.
