Abstract
In cases of muscle partial deficiency, force
enhancement can be achieved by electrical
stimulation (ES). In the present study the
volitional and electrically-induced torque
components are resolved under closed-loop
activation. Isometric contraction of the
Tibialis Anterior (TA) muscle was studied on 5
healthy subjects, using an activation protocol
combining ES alone, volitional activation
alone and combined activation of these two
modes. Torque and EMG were measured. A
computational algorithm was developed to
dissociate the volitional from the overall
torque, based on EMG filtering and predetermined EMG-torque calibration curves.
The results reveal that for a given overall
torque, there exists a linear relationship
between volitional and ES-induced torque.
However, the combined effect of the two
activations was found smaller than their
algebraic summation, indicating that not all
fibers take part in the two activation modes.
enhancement can be achieved by electrical
stimulation (ES). In the present study the
volitional and electrically-induced torque
components are resolved under closed-loop
activation. Isometric contraction of the
Tibialis Anterior (TA) muscle was studied on 5
healthy subjects, using an activation protocol
combining ES alone, volitional activation
alone and combined activation of these two
modes. Torque and EMG were measured. A
computational algorithm was developed to
dissociate the volitional from the overall
torque, based on EMG filtering and predetermined EMG-torque calibration curves.
The results reveal that for a given overall
torque, there exists a linear relationship
between volitional and ES-induced torque.
However, the combined effect of the two
activations was found smaller than their
algebraic summation, indicating that not all
fibers take part in the two activation modes.
| Original language | English |
|---|---|
| Title of host publication | 10th Annual Conference of the International FES Society |
| Number of pages | 3 |
| State | Published - 2005 |
| Event | 10th Annual Conference of the International FES Society - Montreal , Canada Duration: 5 Jul 2005 → 8 Jul 2005 https://www.polymtl.ca/salle-de-presse/en/newsreleases/invitation-10th-annual-conference-international-functional-electrical-stimulation-society-ifess2005 |
Conference
| Conference | 10th Annual Conference of the International FES Society |
|---|---|
| Abbreviated title | IFESS |
| Country/Territory | Canada |
| City | Montreal |
| Period | 5/07/05 → 8/07/05 |
| Internet address |