FREE CSCS: Biomechanics of Resistance Questions and Answers

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Which of the following doesn't represent a particular kind of muscle action?

Correct! Wrong!

Explanation:
The term "plyometric" refers to a particular workout style that uses the stretch-shortening cycle to enable the rapid generation of peak force. Which of the following doesn't represent a specific kind of muscle action?

Meaning of Distal...

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Explanation:
More distant from the trunk. Distal refers to how far away from the trunk a physical component is (relative to another body part). For instance, the elbow is "proximal" when compared to the wrist yet distal when compared to the upper arm (closer to the trunk).

A muscle that "agonists"...

Correct! Wrong!

Explanation:
...is mainly in charge of a specific movement. The "agonist" is the muscle most directly responsible for moving. The "antagonist" muscle is the one that can inhibit that movement. A "synergist" is a muscle that indirectly aids in movement.

The longer the moment arm of muscle force when working with levers...

Correct! Wrong!

Explanation:
The lever gets more effective the longer the moment arm of the muscular force is. Fewer muscles are required when efficiency is higher.

Which position on a barbell curl by an athlete has the most extended moment arm of resistive force?

Correct! Wrong!

Explanation:
The resistive force (the barbell) is at its most significant horizontal distance from the fulcrum at the halfway point of the activity (elbow). At this point in the range of motion, the moment arm of the resistive force is the longest.

True or False: The appendicular skeleton includes the skull.

Correct! Wrong!

Explanation:
The sternum, ribs, and vertebral column comprise the "axial" skeleton. The "appendicular" structure includes all the remaining bones in the body.

True or false: The mechanical advantage of a second-class lever over a muscle force is always more significant.

Correct! Wrong!

Explanation:
True. Muscle force has a more significant mechanical advantage since it has a more extended moment arm than resistive force in a second-class lever.

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