Doublets in motor unit activity of human forearm muscle during simulated computer work.
Motor unit firing pattern and characteristics were analyzed during voluntary contractions as they occur during computer work. For comparison controlled standard ramp contractions were performed. Highly diverse firing patterns were identified while the MU characteristics were similar. Of special notice is the frequent occurrence of double discharges during computer like work but not during ramp contractions.
Sjøgaard
G
G
National Institute of Occupational Health, Copenhagen, Denmark. gs@ami.dk
Søgaard
K
K
Finsen
L
L
Olsen
H B
HB
Christensen
H
H
D003201:Computers; D012090:Cumulative Trauma Disorders / Q000209:etiology*; D005260:Female; D005385:Fingers; D005542:Forearm; D006801:Humans; D018763:Muscle Fatigue