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Personal Trainer Practice Questions

Category - NSCA

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Which of the following does not correctly describe fast-twitch muscles fibers?

They have a quick rate of calcium ion releases
They use blood glucose and muscle glycogen for energy.
They are used during aerobic exercises.
They generate fast, powerful muscle actions.

Explanation

Answer: C - All these statements are true of fast-twitch muscles except that they are used for aerobic exercises; rather, they are used for anaerobic ones such as spiking a volleyball. Their speed of shortening and force development is much faster than the slow-twitch muscles.

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