1. Russian Current Dr. Mohammed TA Omar Ph. D. PT
Russian Current Dr. Mohammed TA Omar Ph.D. PT. Associate Professor-RHSD-CAMS mobile:

2. Russian Current
Russian current is an even alternating sinusoidal medium frequency, applied as series of bursts, which is developed by Russian physiologist named Yakov Kots 1977.

3. Characteristics of Russian Current
Carrier Frequency: Hz ( 25KHz).
Waveform: Polyphasic sinusoidal waveform.
Current Amplitude: The maximum current amplitude is 100mA
Clinical used at 70mA.
Bursts Frequency: Hz.
Burst Duration: ms
On/Off Ratio : :50
Duty cycle : %

4. Duration of treatment is 10minutes,
Ramp-Up and Down; Setting the ramp time is very important to evoked contraction similar to muscle contraction. As the ramp allows gradual increase of intensity with associated gradually increase of muscle contraction.
Training protocol with Russian current: Russian current is (10/50/10), which is
10 =Muscle contractions, lasting for 10 seconds
50= off time (no contraction) for 50seconds
10=cycle repeated for 10times
Duration of treatment is 10minutes,
Frequency of treatment is once daily, for 3-6months

5. Physiological Effects of Russian Current

6. Physiologic Effects Depends on
The total number of bursts delivered per second.
Russian current has a capacity to depolarized :
Sensory nerve fibers Moderate prickling sensation,
Motor nerve fibers Muscle contraction
This contraction is
Painless due to sensory nerve blocked of pain gate
Allow use of high amplitude
Contraction Stronger than those generated by voluntary control (why)
Repeated delivery of bursts at a given current amplitude induces motor nerve depolarization leading to titanic muscle contraction
stimulate deeper motor nerve fibers, which are associated with high force fast-twitch motor unit.
Because of painless effect of Russian current, higher amplitude can be applied to stimulate deeper motor nerve fibers, which are associated with high force fast-twitch motor unit.
During the voluntary muscle contraction, motor unit are recruited asynchronously and, according to the size principle, in order from slow, type I motor units to fast type II motor units.
During electrically evoked muscle contraction, motor unit fire synchronously , and in reverse order from fast type II motor units to slow, type I motor units.

7. Russian Current Contraction against external load
Medium frequency modulated sinusoidal current
Depolarization of sensory /motor nerve fibers
Synchronously,
Motor nerve depolarization induce activation of
fast type II motor units
High level electrically evoked muscular contraction
Contraction against external load
Isometric contraction, slow speed isokinetic, short arch isotonic
Increase Muscle Strengthening 40%

8. Indication and Contraindications
The only indication for use of Russian current is to strengthening the muscular system of healthy and athletic persons
Post-knee ligaments surgery
Post-arthroscopic knee surgery
Following ligament sprain
Contraindications
Over the anterior cervical area
Over the trnasthorcic area
Over the lumbar or abdominal area during pregnant
Over hemorrhagic area
Over neoplastic area
Over metallic and electronic implant
Over area of impaired skin sensation