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(11) EMG in each type of movement showed unique patterns in terms of the duration of contraction, time course of repeated activities, and reciprocity in activity of antagonistic muscles. In chorea and ballism, in addition to brief involuntary contraction at rest, sudden brief interruption of contraction occurs randomly in tonic isometric voluntary contraction.
Six patients (patients 3, 4, 5, 6, 8, and 10) without antagonistic muscle weakening surgery had no changes in the degree of horizontal and vertical strabismus between one week and six months.
It is probable that similar antagonistic muscle and ligament systems are involved.
It can be observed from the figure that during the antagonistic muscle postfatigue elbow extension contraction, EEG amplitude and power spectra of both C3 and C4 increased in 0-60 Hz compared with those during the prefatigue contraction.
Type A individuals showed nearly twice the level of antagonistic muscle activity when compared with Type B individuals.
The uncertainty of pulling objects under slippery footing conditions might lead to increased cocontraction of the antagonistic muscles, thereby further accentuating spinal loading.
Finally, because cocontraction of antagonistic muscles is significant, EMG activity should be an indicator of overall muscle load, which is not captured by the resultant finger force alone.
Do the function of these sensors change when the muscles are activated to take action Does the co-activation of antagonistic muscles play a role not only in actuation, but also in perception This project will investigate these questions through targeted experiments with human participants and controllable stiffness soft robots that provide greater access to internal variables.
It is physiologically controlled by excitatory presynaptic potentials of Ia afferent fibers and inhibitory postsynaptic potentials from muscle spindles of antagonistic muscles. Tonus may be altered by hypotonia or hypertonia.
We note that the results showed the similar pattern in the agonistic muscles and also even the antagonistic muscles such as TRO, ECR, and EDC.
The antagonistic muscles at the elbow joint were much influenced during the primary strength at shoulder joint.
This may contribute to the reduced coordination of antagonistic muscles and impaired gait function observed in adults with CP.