E Stim: Motor Performance

How do frequencies affect m response:

Low (1-10) = m twitches

Mod (30-50) = Tetanic contraction for strengthening

High (>50) = Strong contraction but fatigue risk

Premodulated E Stim

A waveform in which the frequency and amplitude are modulated within the device

- Only uses 1 channel

Premod Frequency Parameter

80-150 Hz (pain modulation) or 1-10 Hz (m relaxation)

Figure: Numbers 1-6

1. Phase duration

2. Pulse duration

3. Peak amplitude

4. Peak to peak amplitude

5. Inter-pulse interval

6. Intra-pulse interval

Parameters for Strenghtening

PD: Higher (>150)

F: Low (30-80)

Voluntary Muscle Contraction Order

Small then large

E Stim Muscle Contraction Order

Large then small (Type 2 to (and) 1))

For strength mains, what is the minimal MVIC needed?

50%

NMES

Neuromuscular electrical stimulation

Another name for NMES?

FES: Functional electrical stimulation

NMES Parameters for Strengthening: PD

200-800 usec

NMES Parameters for Strengthening: Frequency

30-80Hz

NMES Parameters for Strengthening: Amplitude

Enough to obtain a strong m contraction (target 50% MVIC)

NMES Parameters for Strengthening: Ramp Up

1-5 sec

NMES Parameters for Strengthening: Ramp Down

1-2 sec

NMES Parameters for Strengthening: Duty Cycle

1:3 to 1:5

Russian has a burst frequency of ___?

50Hz

Russian Burst Interval

10ms

Russian Duty Cycle

50%

Russian Carrier Frequency

2500Hz

Pulsed Biphasic is aka

NMES