TY - JOUR
T1 - Activation history and constant errors in human force production
AU - Hutton, Robert S.
AU - Enoka, Roger M.
AU - Suzuki, Shuji
PY - 1984/7/30
Y1 - 1984/7/30
N2 - Spinal proprioceptive reflexes and muscle tension are transiently potentiated in the aftermath of isometric muscle contractions. To determine if such alterations may bias ongoing motor commands, subjects were tested for accuracy of matching a criterion force following relaxation or a maximum contraction. Large postcontraction overestimations of the criterion force were consistently found. Errors progressively decayed to postrelaxation control values within 50 s. It is proposed that transient postcontractile potentiation of spinal reflex pathways may summate with previously set motor commands to produce inadvertent errors in perceived effort.
AB - Spinal proprioceptive reflexes and muscle tension are transiently potentiated in the aftermath of isometric muscle contractions. To determine if such alterations may bias ongoing motor commands, subjects were tested for accuracy of matching a criterion force following relaxation or a maximum contraction. Large postcontraction overestimations of the criterion force were consistently found. Errors progressively decayed to postrelaxation control values within 50 s. It is proposed that transient postcontractile potentiation of spinal reflex pathways may summate with previously set motor commands to produce inadvertent errors in perceived effort.
KW - perceived effort
KW - postactivation potentiation
KW - postcontraction facilitation
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U2 - 10.1016/0006-8993(84)90491-8
DO - 10.1016/0006-8993(84)90491-8
M3 - Article
C2 - 6467003
AN - SCOPUS:0021257937
VL - 307
SP - 344
EP - 346
JO - Brain Research Protocols
JF - Brain Research Protocols
SN - 0006-8993
IS - 1-2
ER -