Anticipatory Changes of the Tonic EMG-activity Soleus Muscle During Voluntary Movements of Contralateral Ankle Joint
DOI:
https://doi.org/10.29038/2617-4723-2016-332-7-154-159Keywords:
tonic EMG-activity, m. soleus, voluntary movements, contralateral limb, ankle joint, premotor period, anticipatory postural adjustmentsAbstract
In healthy humans we studied changes of the tonic EMG-activity m.soleus before beginning of voluntary movements of the contralateral lower limb in ankle joint. It is shown that during standing position of people the nature of these changes depended on type of movement: extension and flexion of ankle joint caused decrease and increase of EMG intensity respectively. These phenomena manifistated behind 90 ms to both kinds of movements and continued throughout all premotor period. In lying position of people the tonic EMG activity m.soleus did not change before flexion and extension contralateral ankle. Results of the study suggest that changes m.soleus tonic EMG arising before voluntary movements contralateral limb only at human vertical pose, are the manifestation of anticipatory postural alterations that contribute to the implementation of adequate antigravity function of the motor system of man.
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5. RocchiL. Dependence of anticipatory postural adjustments for step initiation on task movement features: a study based on dynamometric and accelerometric data / L. Rocchi, M. Mancini, L. Chiari [et al. 4] // Conf. Proc. IEEE Eng. Med. Biol. Soc. – 2006. – Р.1489–1492.
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9. Yiou E. Influence of fear of falling on anticipatory postural control of medio-lateral stability during rapid leg flexion / E. Yiou, T. Deroche, M. C. Do [et al.] // Eur. J. Appl. Physiol. – 2011. – Vol. 111, №4. – P. 611–612.
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13. Silva A. Activation timing of soleus and tibialis anterior muscles during sit-to-stand and stand-to-sit in poststroke vs. healthy subjects / A. Silva, A. S. Sousa, R. Pinheiro [et al.] // Somatosens Mot. Res. – 2013. – Vol. 30, № 1. – Р.48–55.
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Published
2016-05-23
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Human and Animal Physiology
How to Cite
Anticipatory Changes of the Tonic EMG-activity Soleus Muscle During Voluntary Movements of Contralateral Ankle Joint. (2016). Notes in Current Biology, 7(332), 154-159. https://doi.org/10.29038/2617-4723-2016-332-7-154-159
