Chp 12 Glossary Terms

Question 1

Amplitude

Answer 1

• Intensity

- The magnitude of current or voltage

Question 2

Biphasic Waveform

Answer 2

• Current that moves only in one direction

- Pulsed or Alternating

Question 3

Electrical Muscle Stimulation (EMS)

Answer 3

• Application of an electrical current directly to muscle to produce a muscle contration

Question 4

Fast-Twitch Type II Muscle Fibers

Answer 4

• Large muscle fivers that contract to produce quick, powerful movements, but fatigue quickly
• Fast Twitch Muscles

Question 5

Frequency

Answer 5

• The number of cycles or pulses per second

- measured in Hertz

Question 6

Functional Electrical Stimulation (FES)

Answer 6

• Application of an electrical current to produce muscle contractions applied during a functional activity.
• Ex: ES of dorsiflexion during the swing phase of gait

Question 7

Motor Point

Answer 7

• The place in a muscle where electrical stimulation will produce the greatest contraction with the least amount of electricity
• Usually over the muscle belly

Question 8

Neuromuscular Electrical Stimulation (NMES)

Answer 8

• Application of an electrical current to motor nerves to produce contractions of the muscles they intervate

Question 9

On:Off Time

Answer 9

• On Time: the time during which a train of pulses occur

- Off Time: is the time between trains of pulses, when no current flows

Question 10

Overload Principle

Answer 10

• A principle of strengthening muscles ht at states the greater the load placed on a muscle and the higher force contraction it produces, the more strength that muscle will gain

Question 11

Pulse Duration

Answer 11

• Time from the beginning of the first phase to the end of the last phase of a pulse

Question 12

Pulsed Biphasic Waveform

Answer 12

• Series of pulses where the charged particles move first in one direction and then in the opposite direction

Question 13

Pulsed Current (Pulsatile Current)

Answer 13

• An interrupted flow of charged particles where the current flows in a series of pulses separated by periods when no current flows

Question 14

Ramp Up

Answer 14

• is the time it takes for the current amplitude to increase from zeroto its maximum amplitude during on time

Question 15

Ramp Down

Answer 15

• is the time it takes for the current amplitude to decrease from its maximum amplitude to decrease from its maximum amplitude during the on time back to zero

Question 16

Russian Protocol

Answer 16

• A medium frequency AC with a frequency of 2500 Hz deliverin in 50 bursts/second. 10/50 rotation

Question 17

Slow-Twitch Type 1 Muscle Fibers

Answer 17

• Small muscle fibers that are slow to contract but do not fatigue easily
• Slow Twitch Muscles