|
Year |
2001 |
|---|---|
|
Question Number |
63. |
|
Category |
Select |
Question
Which of the following terms best describes a muscle contraction that occurs as the muscle lengthens?
1. Concentric
2. Eccentric
3. Isotonic
4. Isometric
5. Isokinetic
Figures
Answer (click for answer)
The correct answer is (2) Eccentric. This is a strictly "definition" based question. A concentric contraction occurs as the muscle shortens. Isotonic: Muscle tension is CONSTANT through the range of motion. Isometric: Muscle tension is generated but the LENGTH of the muscle remains CONSTANT. Isokinetic: Muscle tension is generated as the muscle MAXIMALLY contracts at a constant velocity over a full range of motion.
Reference: Miller. Review of Orthopaedics (3rd Ed). Philadelphia, PA. WB Saunders. 2000. pp. 62-65.