WEC 4

Which of the following describes why burst mode TENS is unique?

• bursts are delivered at a freq of 10-20 burst /sec; cause muscle twitch

• Its a TENS waveform divided into 1-4 burst/sec; both gait control and opiod

• a low-frequency TENS divided into 100 burst/sec;both gait control and opiod

• is amplitude modulated so that less accommodation occurs

Biofeedback can be used for all of the following EXCEPT

• determining strength

• pain reduction

• promoting muscle re-ed

• promoting muscle inhibition

You're looking to reduce muscle guarding from the lumbar paraspinals, which parameters are most appropriate?

• setting the threshold low, targeting BELOW the threshold

• setting the threshold low, targeting ABOVE the threshold

• setting the threshold high, targeting ABOVE the threshold

• setting the threshold high, targeting BELOW the threshold

Tags

NGSS.HS-LS1-3

Which of the following are important regarding electrode placement for EMG biofeedback?

• place the electrodes farther apart to reach more of the targeted muscle

• place them only over a motor point for accurate reading

• place them in an "x" pattern bracketing the target muscle

• place the parallel to the m fibers you are targeting

Which of following is true regarding current density in tissues?

• Moving electrodes further apart decreases current in deep tissues

• The smaller the active electrode the lower the current density

• Moving the electrodes closer together decreases current in deep tissues

• Due to NaOH and current density, the anode should be 2x the size of the cathode

Which of the following is the best on/off cycle time for NMES for strengthening?

• 15:45

• 10:50

• 10:10

• 10:30

Which of the following is an ideal target for dosing the strength of the contraction with NMES for strengthening?

• 10% of the MVIC

• 30% of the MVIC

• 50% of the MVIC

• 80-90% of the MVIC

What type of waveform is LEAST appropriate for electrical stimulation with the goal of increasing range of motion?

• Aussie

• Direct Current

• Russian

• Balance symmetric biphasic

Tags

NGSS.HS-PS4-1

Which of the following is true about timing of stimulating motor units via voluntary and NMES elicited contraction

• NMES contraction elicits large motor units first, then small

• Voluntary contraction elicits large motor units first, then small

• they both elicit the same patterns of motor recruitment

  
  

• voluntary contraction elicits motor units random order

Which of the following parameters can be increased to help limit fatigue during NMES?

• Pulse frequency

• Ramp time

• Time off between repetitions

• Pulse duration