Which ONE of the following statements regarding the Triceps Brachii and Exercise
ID: 3509971 • Letter: W
Question
Which ONE of the following statements regarding the Triceps Brachii and Exercise is INCORRECT?
1. The external moment arm (EMA) is larger in the Cable Extension exercise compared to the Triceps “Kickbacks” when the Triceps Brachii is in an optimal length (elbow flexion).
2. The external moment arm (EMA) is larger in the Triceps “Kickbacks” exercise compared to the Cable Extension exercise when the Triceps Brachii is in a short length (elbow extension).
3. The external torque in the Triceps “Kickbacks” exercise is large when the muscle force of the triceps brachii muscle is low due to decreased number of cross bridges.
4. The external torque in the Cable Extension exercise is smaller when the muscle length is in a shortened position.
5. Both exercises have the greatest torque when the muscle length is as an optimal length to generate force.
Cable Extensions Triceps "Kickbacks"Explanation / Answer
1 is incorrect.
The external moment arm length remains relatively high throughout elbow extension and increases as elbow joint angle decreases (as the arm straightens).
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