Russian Flashcards
(20 cards)
What is the waveform of Russian Stimulation?
Burst modulated Alternating current (AC)
What is the typical carrier frequency used in Russian Stimulation?
2500 Hz
What is the pulse frequency for tetany
35-50 pps
What pulse frequency is used in Russian Stimulation
50 pps (bursts per second)
What is a typical ON: OFF ratio for muscle strengthening
1:5, 1:4, 1:3
What is a typical ON time for muscle strengthening contractions
6-10s
What is the purpose of ramp time in Russian Stimulation
gradually increase and decrease the intensity of the constraction
What is the recommended ramp time for strength- building contractions
3-6 seconds
How does the total current delivered by Russian stimulation compare to biphasic pulse stimulation
Russian stimulation delivers significantly more current due to longer burst durations
What is the minimum %MVIC needed to strengthen a healthy muscle
at least 50% MVIC
What is the minimum %MVIC needed to strengthen a weakened muscle
at least 10% MVIC
What is the treatment time for muscle spasm reduction using Russian stimulation
10-30 minutes
What are the target neurons for increasing muscle strength with Russian stimulation
A-Alpha
Explain the concept of “duty cycle” in the context of the presentation
implied 50% duty cycle, related to on/off time
In voluntary contractions, which fibers are recruited first?
small diameter(slow twitch)
In stimulated contractions, which fibers are recruited first?
large diameter (fast twitch fibers)
Which muscle fibers fatigue quickly? Resist fatigue?
fast twitch (type II) fatigue quickly
slow twitch (type I)
Which muscles are generally the first to atrophy with disuse?
slow twitch
What pulse frequency induces fatigue?
greater than 50 pps
How long is one burst in Russian ?
10 milliseconds
