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Advanced Modalities > EMG Biofeedback > Flashcards

EMG Biofeedback Flashcards

0
Q

What is the purpose of the “ground” electrode?

A

Point of reference

Helps differentiate between useful and meaningless information

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1
Q

What does EMG measure?

A

Amount of electrical activity in skeletal muscle

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2
Q

Why is EMG better than filming a patient while doing an exercise?

A

Immediate feedback allows for better correction for patient

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3
Q

What are the direct physiological effects of EMG biofeedback?

A

There are no direct physiological effects

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4
Q

What are the indirect physiological effects of EMG biofeedback?

A

Muscle reeducation

Pain reduction

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5
Q

What is no measured by EMG?

A

Force of contraction

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6
Q

What are the 3 types of feedback provided by EMG?

A

Auditory
Visual
Tactile

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7
Q

What is the purpose of setting threshold “above” when using EMG?

A

When you are trying to decrease activation of a muscle

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8
Q

What is a non-EMG form of visual biofeedback?

A

Having a patient complete an exercise in front of a mirror

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9
Q

What is the threshold percentage set given the following scenario - day 1 of decreasing spasm with a C-Spine injury?

A

80% - start high and gradually decrease percentage

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10
Q

What are the goals of Biofeedback?

A

Monitor physiological processes
Objectively measure physiological processes
Convert monitored effect of feedback, which will bring about desired effect

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11
Q

What is necessary to physically prepare the patient?

A 
Shave Rx area
Clean Rx area with alcohol
Abrade treatment area
Apply conducting medium if necessary
Attach electrodes over belly of muscle
Adjust output for desired affect
Instruct patient on activity - remove distractions
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12
Q

What are the indications for EMG?

A 
PFPS
ACL/PCL reconstruction
Weak VMO
Post-surgery atrophy
Impingement syndrome
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13
Q

What are the precautions for EMG?

A

Do not exceed allowable ROM limits

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14
Q

What are the contraindications for EMG?

A

Any conditions where muscle activity will increase injury or damage repaired tissues

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15
Q

What does MVIC stand for?

A

Maximum Voluntary Isometric Contraction

16
Q

What is threshold based on?

A

MVIC
Activation with normal activity
Activation at rest

17
Q

How are the goals and feedback related?

A 
Deactivation = above
Activation = below
18
Q

How does threshold level work when doing EMG?

A

Threshold level is based on goals of treatment and timing
Ex: If you are day 1 trying to reactivate the VMO the threshold level would be set low and the feedback would be given below the threshold level

Advanced Modalities (5 decks)

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