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Fatigue reduction in lower limb stimulation using electrode array


R. Kundert

Semester/Bachelor Thesis, FS 09

A major limitation to treatment with functional electrical stimulation (FES) is fast occurring fatigue. Availability of electrode arrays, developed for electrical stimulation, provide new possibilities to ght fatigue. The main idea behind the Electrode Array Approach (EAA) is to change the cross sectional area of the targeted motor neurons, using multiple electrodes, to give the stimulated muscle bers more resting time. Also, the EAA is applied in an attempt to reduce the total amount of stimulation received by any particular muscle area. Experiments of quadriceps and biceps stimulation with isometric torque measurements gave results that were in agreement with EAA assumptions. Results showed signi cantly reduced fatigue when stimulating with EAA. The ndings encourage further investigation into the e ect of the EAA on other muscles or within dynamic experimental setups. Besides fatigue reduction, EAA also appeared to be extremely e ective when stimulating obese individuals. Increased local current density due to smaller electrode sizes enabled stimulation through fat layers, where normal setups failed. Therefore, EAA should be considered if such individuals are unable to receive FES therapies.


Type of Publication:

(13)Semester/Bachelor Thesis

S. Micera

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2009:IFA_3433
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