How should electrodes be applied relative to muscle fibers?

How should electrodes be applied relative to muscle fibers?

• A. Perpendicular to muscle fibers.
• B. Parallel to muscle fibers.
• C. Random orientation.
• D. Only over bone.

Answer: (B)

You should place electrodes parallel to the muscle fibers. Aligning the current path with the direction of the fibers allows the electrical stimulus to travel along the length of the muscle, promoting more uniform depolarization and recruitment of motor units along the fiber, which leads to a stronger, smoother contraction and better targeting of the muscle. Placing electrodes perpendicular to the fibers tends to activate tissue across the fibers less efficiently, often increasing superficial activation and discomfort while reducing depth and specificity. So, parallel orientation aligns the stimulation with the muscle’s architecture for more effective and comfortable results.

You should place electrodes parallel to the muscle fibers. Aligning the current path with the direction of the fibers allows the electrical stimulus to travel along the length of the muscle, promoting more uniform depolarization and recruitment of motor units along the fiber, which leads to a stronger, smoother contraction and better targeting of the muscle. Placing electrodes perpendicular to the fibers tends to activate tissue across the fibers less efficiently, often increasing superficial activation and discomfort while reducing depth and specificity. So, parallel orientation aligns the stimulation with the muscle’s architecture for more effective and comfortable results.