Ground Reaction Forces – MCQs

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1. Ground Reaction Force (GRF) is defined as:



2. The study of GRF is most relevant in:



3. Which law of motion explains ground reaction forces?



4. The main component of GRF during walking is:



5. Vertical GRF is usually expressed in terms of:



6. During running, peak vertical GRF can reach up to:



7. GRF is measured using:



8. Which component of GRF is responsible for forward propulsion?



9. Which component of GRF helps control side-to-side balance?



10. In standing still, the vertical GRF is equal to:



11. GRF during heel strike in walking shows:



12. The two peaks of vertical GRF during walking correspond to:



13. GRF is important in analysis of:



14. Higher GRFs are usually associated with:



15. GRF during running without shoes compared to shoes is usually:



16. Which condition can be diagnosed using GRF abnormalities?



17. Medial–lateral GRF is highest in:



18. GRF data is often normalized to:



19. Which factor can reduce peak GRF in landing?



20. Excessive GRF can contribute to:



21. GRF is applied in which rehabilitation method?



22. The vertical GRF during walking typically shows how many peaks?



23. GRF during running usually shows:



24. Which of the following surfaces generates higher GRF?



25. Peak GRF in sprinting can reach up to:



26. GRF during vertical jumping primarily acts in which direction?



27. The anterior–posterior GRF has two phases:



28. Which type of shoe reduces vertical GRF peaks?



29. GRF is essential in determining:



30. The magnitude of GRF is influenced by:



31. A high braking force in anterior–posterior GRF may indicate:



32. Vertical GRF at midstance is usually:



33. The “impact peak” in GRF occurs at:



34. Which sport shows very high GRF values during landing?



35. GRF is lowest in:



36. Which GRF component is most associated with slips and falls?



37. GRF patterns are different in:



38. The maximum vertical GRF during walking is usually:



39. GRF is essential for calculating:



40. Increased cadence in running generally:



41. GRF is used in sports science for:



42. In rehabilitation, GRF feedback helps patients improve:



43. Force plates provide GRF data in:



44. The “propulsive peak” of anterior–posterior GRF occurs during:



45. Which of these reduces GRF effectively?



46. GRF magnitude is directly proportional to:



47. In running, shorter ground contact time usually results in:



48. The variability in GRF signals may indicate:



49. Peak braking force in anterior–posterior GRF usually occurs at:



50. Understanding GRF is crucial for:



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