Instrumentation in Motion Analysis (EMG, Force Plates, Motion Capture) – MCQs

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1. Electromyography (EMG) is used to measure:



2. Which type of EMG involves inserting a needle into the muscle?



3. Surface EMG electrodes are usually placed:



4. The main disadvantage of surface EMG is:



5. Force plates are primarily used to measure:



6. Which component of motion is most directly captured by force plates?



7. Motion capture systems primarily measure:



8. In optical motion capture, reflective markers are tracked by:



9. A typical sampling frequency for EMG analysis is:



10. Which parameter is derived from force plate data?



11. The latency between EMG activity and muscle force production is called:



12. Which motion capture system uses magnetic fields to track movement?



13. A major limitation of electromagnetic motion capture is:



14. Inertial motion capture uses:



15. Which type of EMG provides the most selective measurement of a single muscle fiber?



16. The main advantage of wireless EMG systems is:



17. Force plates can measure forces in how many dimensions?



18. In gait analysis, force plate data is synchronized with:



19. Which system provides the most detailed 3D motion reconstruction?



20. Which factor most affects EMG signal quality?



21. Motion capture markers are typically placed on:



22. Which type of analysis combines EMG, force plates, and motion capture?



23. The ground reaction force vector passes through the:



24. A force plate typically measures:



25. In motion capture, a higher frame rate is needed for:



26. High-density EMG uses:



27. Which of the following is a drawback of optical motion capture?



28. EMG amplitude is commonly normalized to:



29. Which type of force plate is portable and commonly used in sports biomechanics?



30. Motion capture combined with EMG helps in identifying:



31. Which sensor measures angular velocity in inertial systems?



32. A force plate records a sharp peak at heel strike due to:



33. The RMS value of an EMG signal represents:



34. Which markerless motion capture technology is becoming popular in biomechanics?



35. Which step is essential before applying surface EMG electrodes?



36. Which force component is most relevant in vertical jump analysis?



37. Synchronization of EMG and motion capture is required to analyze:



38. Inertial measurement units (IMUs) are advantageous because they are:



39. The frequency range of most useful EMG signals is:



40. Which variable can be derived from both motion capture and force plate data?



41. Which marker placement is used to measure knee kinematics in gait labs?



42. Motion capture accuracy can be affected by:



43. Which variable cannot be directly measured by force plates?



44. The most common artifact in surface EMG is caused by:



45. Force plate data is essential for calculating:



46. The Nyquist theorem suggests EMG sampling rate should be at least:



47. A pressure-sensitive walkway is an alternative to:



48. Which of the following is a benefit of high-density EMG?



49. The center of pressure trajectory during walking is called:



50. Which system provides the most comprehensive biomechanical analysis when combined?



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