Abstract
In 64 healthy male students the changes in muscle fiber conduction velocity in vastus lateralis was studied during isometric contractions at 50% of maximum force. Muscle fiber conduction velocity was measured with a surface electrode array placed along the muscle fibers and calculated from the time delay between 2 myoelectric signals. Mean values of conduction velocity decreased significantly from 4.3m/s to 4.1m/s with local muscle fatigue. This result suggests that muscular fatigue can be estimated from muscle fiber conduction velocity with surface electrodes.
