Action Potential Quiz
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Questions and Answers

What is the purpose of the ramp in NMES?

  • To increase the contraction force by recruiting more motor units
  • To control the frequency of the electrical impulses
  • To gradually increase the nerve fiber stimulation and initiate a comfortable contraction (correct)
  • To minimize muscle fatigue during the stimulation

Which of the following is NOT a common treatment goal of NMES?

  • Increasing range of motion (ROM)
  • Reducing pain (correct)
  • Facilitating voluntary control
  • Strengthening the muscle

What is the typical duty cycle used in clinical NMES applications?

  • 1:1
  • 1:3 (correct)
  • 1:7
  • 2:1

Which pulse parameter is responsible for determining the smoothness of the muscle contraction in NMES?

<p>Frequency (C)</p> Signup and view all the answers

How does increasing the intensity in NMES affect the contraction force?

<p>Increases the contraction force by recruiting more motor units (D)</p> Signup and view all the answers

Which of the following conditions would be a contraindication for NMES?

<p>Cardiac pacemaker (C)</p> Signup and view all the answers

What is a potential benefit of using larger electrode sizes in NMES?

<p>Lower current requirements (C)</p> Signup and view all the answers

Which of the following is NOT a common application of NMES?

<p>Enhancing athletic performance (B)</p> Signup and view all the answers

In NMES, what is the purpose of using a ramped pulse train?

<p>To gradually increase muscle activation (B)</p> Signup and view all the answers

Which muscle fiber type is primarily targeted by NMES?

<p>Fast glycolytic (Type 2b) (D)</p> Signup and view all the answers

What is a potential disadvantage of using NMES for an extended period?

<p>Muscle fatigue and discomfort (D)</p> Signup and view all the answers

Which of the following conditions would be an indication for NMES?

<p>Spinal cord injury with paralysis (A)</p> Signup and view all the answers

What is the primary mechanism by which NMES induces muscle contraction?

<p>Direct depolarization of muscle fibers (B)</p> Signup and view all the answers

Which of the following pulse parameters is primarily responsible for determining the depth of muscle activation in NMES?

<p>Pulse amplitude (D)</p> Signup and view all the answers

Which of the following is a potential complication associated with the use of NMES?

<p>Skin irritation or burns (A)</p> Signup and view all the answers

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