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Which of the following would increase twitch strength in a muscle fiber?Multiple choice question.Low stimulus frequencySupramaximal stimuliHigh stimulus frequencySubthreshold stimuli

Question

Which of the following would increase twitch strength in a muscle fiber?Multiple choice question.Low stimulus frequencySupramaximal stimuliHigh stimulus frequencySubthreshold stimuli

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Solution

Supramaximal stimuli would increase twitch strength in a muscle fiber.

Here's why:

  1. Low stimulus frequency: This would not increase twitch strength. A low frequency of stimulus would not allow for summation or tetanus, which are needed for increased twitch strength.

  2. Supramaximal stimuli: This would increase twitch strength. Supramaximal stimuli are those that are stronger than the maximum threshold needed to cause a muscle fiber to contract. This means that all or nearly all of the muscle fibers in the muscle would be activated, leading to a stronger twitch.

  3. High stimulus frequency: This could potentially increase twitch strength, but only to a point. If the frequency is too high, it could lead to fatigue and a decrease in twitch strength.

  4. Subthreshold stimuli: These are stimuli that are not strong enough to cause a muscle fiber to contract, so they would not increase twitch strength.

This problem has been solved

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