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References in periodicals archive ?
Although CN electrode has been used to assess jitter in MG patients and healthy controls, no report had used CN electrode to assess jitter in neurogenic diseases to investigate motor unit instability.
The most probable scenario is that during the 30sec submaximal isometric muscle action, motor unit recruitment was required to maintain the force output as peripheral fatigue reduced the force capabilities of the already active motor units.
This distortion is generated because the contribution of a given motor unit to the spectrum depends on the distance from this unit to the surface electrodes (Lindstrom and Magnusson, 1977).
During the 2nd wk of training the maximal force of certain motor units groups would be developed on Monday, while on Friday intramuscular coordination in combination with motor unit synchronization were developed (17-20).
Ahmed, 2003), who argued that Explosive power degree associated with number of activated motor units and becoming more and more in the case of arousing the largest possible number of muscle motor units, this controlled by stimuli degree as increasing intensity, which lead participation of a larger number of motor units and thus increase the explosive power.
Relationships between surface-detected EMG signals and motor unit activation.
Patterns of motor unit recruitment can be determined using surface EMG.
It has been shown that frequency of stimulation increases force production by increasing the specific tension on each individual motor unit [6-7], which may also increase the risk for contraction-induced muscle injury [12].
The transient hypoxia associated with blood flow restriction at light loads demonstrates hastening fatigue through increases in blood lactate concentrations, MUA, and deceases in motor unit firing rate; all of which suggest fatigue.
Resistance training affects motor units of the body which leads to special adaptation [2].
The text starts with material on the relationships between motorneurons and the muscle fibers they innervate and the concept of motor unit types.
3] looking at individual contributions to motor unit recruitment found that increases in average conduction velocity was a major contributor to variantions in median frequency and suggested using the median frequency as the index to indentify different muscle's recruitment strategies.
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