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