Muscle Contractions (Isometric, Isotonic, Isokinetic) – MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. Isometric contraction is characterized by: (A) Muscle length changes (B) Muscle length remains the same (C) Rapid movement (D) Muscle relaxation 2. During isotonic contraction, the muscle: (A) Changes length under constant tension (B) Remains the same length (C) Does not generate force (D) Only relaxes 3. Isokinetic contraction occurs at: (A) Constant speed (B) Constant length (C) Variable speed (D) No speed 4. Which contraction generates tension without movement? (A) Isometric (B) Isotonic (C) Isokinetic (D) Concentric 5. Concentric contraction is: (A) Muscle shortens under tension (B) Muscle lengthens under tension (C) Muscle maintains length (D) Muscle relaxes 6. Eccentric contraction is: (A) Muscle shortens under tension (B) Muscle lengthens under tension (C) Muscle maintains length (D) Muscle relaxes 7. During a plank exercise, the muscles perform: (A) Isotonic contraction (B) Isometric contraction (C) Isokinetic contraction (D) Eccentric contraction 8. Lifting a dumbbell in a biceps curl is an example of: (A) Concentric isotonic contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 9. Lowering a dumbbell slowly in a biceps curl is: (A) Concentric contraction (B) Eccentric isotonic contraction (C) Isometric contraction (D) Isokinetic contraction 10. Isokinetic exercises are commonly performed using: (A) Free weights (B) Resistance bands (C) Special machines controlling speed (D) Body weight only 11. Which contraction type is best for muscle strengthening at constant speed? (A) Isometric (B) Isotonic (C) Isokinetic (D) Concentric only 12. Isometric exercises are often used in: (A) Early rehabilitation (B) Sports performance (C) Speed training (D) Cardio training 13. Isotonic contractions are divided into: (A) Concentric and eccentric (B) Isometric and isokinetic (C) Fast-twitch and slow-twitch (D) Static and dynamic 14. Which contraction increases joint angle? (A) Concentric (B) Eccentric (C) Isometric (D) Isokinetic 15. Which contraction decreases joint angle? (A) Concentric (B) Eccentric (C) Isometric (D) Isokinetic 16. During wall sit, quadriceps perform: (A) Isotonic contraction (B) Isometric contraction (C) Isokinetic contraction (D) Concentric contraction 17. Eccentric contractions are important for: (A) Power generation (B) Shock absorption and control (C) Maintaining posture (D) Flexibility 18. Which contraction type is joint angle constant but tension changes? (A) Isometric (B) Isotonic (C) Isokinetic (D) None 19. Pulling against an immovable object is an example of: (A) Isometric contraction (B) Isotonic contraction (C) Concentric contraction (D) Eccentric contraction 20. Sprinting involves primarily which contraction? (A) Isometric (B) Concentric isotonic (C) Isokinetic (D) Static 21. Controlled lowering of body in a squat is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 22. Which contraction type is safest for early post-injury rehab? (A) Eccentric (B) Isometric (C) Concentric (D) Isokinetic 23. Pushing off the ground during a jump is: (A) Concentric isotonic (B) Eccentric isotonic (C) Isometric (D) Isokinetic 24. Landing after a jump involves: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 25. Isometric contraction improves: (A) Muscle strength at specific joint angle (B) Muscle length (C) Speed (D) Flexibility 26. Isotonic contraction improves: (A) Muscle strength through range of motion (B) Strength at one angle only (C) Only endurance (D) Joint stability only 27. Isokinetic contraction is useful for: (A) Maximum muscle strength (B) Strength at controlled velocity (C) Rehabilitation (D) All of the above 28. During isotonic contractions, muscle tension: (A) Remains constant (B) Increases then decreases (C) Changes to move load (D) None 29. Holding a yoga pose like plank involves: (A) Concentric contraction (B) Isometric contraction (C) Eccentric contraction (D) Isokinetic contraction 30. Throwing a ball uses which contraction type in the arm muscles? (A) Isometric (B) Concentric isotonic (C) Eccentric (D) Isokinetic 31. Decelerating the arm after a throw uses: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 32. Knee extension in leg press machine is an example of: (A) Concentric isotonic (B) Eccentric isotonic (C) Isometric (D) Isokinetic 33. Returning weight to start position in leg press is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 34. Isokinetic devices control: (A) Resistance (B) Speed of movement (C) Muscle length (D) Joint angle 35. Which contraction produces greatest force per unit muscle? (A) Isometric (B) Concentric (C) Eccentric (D) Isokinetic 36. Which contraction type is used in static yoga poses? (A) Concentric (B) Eccentric (C) Isometric (D) Isokinetic 37. Lifting a load faster than gravity requires: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 38. Slowly lowering a heavy load is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 39. Isometric contractions are useful for: (A) Increasing muscle mass (B) Maintaining joint stability (C) Improving flexibility (D) Speed training 40. Muscle shortening against gravity is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 41. Muscle lengthening with gravity is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 42. In isokinetic contraction, resistance: (A) Varies to maintain constant speed (B) Is fixed (C) Is minimal (D) None 43. Isometric contraction produces: (A) No joint movement (B) Maximum joint movement (C) Rapid movement (D) Variable joint movement 44. Resistance training machines often allow: (A) Isometric exercise only (B) Isokinetic exercise only (C) Both isotonic and isokinetic (D) None 45. Isometric exercises are recommended for: (A) Post-surgery rehab (B) Maximal strength (C) Sprint training (D) Speed endurance 46. Eccentric contraction is important for: (A) Controlling motion (B) Injury prevention (C) Building strength (D) All of the above 47. Concentric contractions are associated with: (A) Shortening of muscle (B) Lengthening of muscle (C) Maintaining length (D) Rapid relaxation 48. The main difference between isotonic and isokinetic contraction is: (A) Speed vs resistance (B) Length vs tension (C) Force vs velocity (D) None 49. Wall sit strengthens muscles using: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction 50. Returning to starting position in resistance training is: (A) Concentric contraction (B) Eccentric contraction (C) Isometric contraction (D) Isokinetic contraction Related Posts:Muscle Forces and Contractions – MCQsMuscle Types and Properties – MCQsMuscle Attachments and Actions – MCQsMuscle Mechanics (Length-Tension Relationship, Force-Velocity) – MCQsTissue Biomechanics (Bone, Ligament, Tendon, Muscle) – MCQsMuscle Mechanics (Length-Tension, Force-Velocity) – MCQs