PTRS 853 - Biofeedback and FES

Augmented (Extrinsic) Feedback

information provided about the movement in addition to inherent feedback.

- verbal information from therapist / coach

- mirror or recording

- stopwatch

- biofeedback device

- forceplate

Knowledge of results (KR)

information about movement outcome related to the goal

Knowledge of Performance (KP)

provides information about the movement pattern after a movement was performed. It tends to be more descriptive

what does EMG Biofeedback improve?

Active movement

General principles of EMG Biofeedback

- bandwidth KR (how specific you want the results to be)

- surface electrodes - size / distance

- KR frequency

FES (E-stim) use

Orthotic substitution / enhance function

- causes the muscle contraction rather than pt in biofeedback

Examples:

- reduced shoulder subluxation (already discussed in UE lecture)

- LE cycle ergometry

- full gait cycle

- reaching activities

what is there strong evidence that AFO and FES can increase?

gait speed, mobility, dynamic balance in acute / chronic stroke

ANPT CPG

- strong evidence for both AFO and FES following stroke if decreased lower extremity motor control

- both improve gait speed, dynamic balance, mobility, quality of life

- not appropriate if tone / spasticity is primary problem

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