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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2015; 61(2): 3-14

COMPARATIVE ANALYSIS OF ELECTROMYOGRAPHIC MUSCLE ACTIVITY OF THE HUMAN HAND DURING CYCLIC TURNS OF ISOMETRIC EFFORT VECTOR OF WRIST IN OPPOSITE DIRECTIONS

A.V. Lehedza1, A.V. Gorkovenko1, I.V. Vereshchaka1, M. Dornowski2, A. I. Kostyukov1

  1. A.A.Bogomoletz Institute of Physiology of National Academy of Sciences of Ukraine, Kyiv;
  2. Academy of Physical Education and Sports, Gdansk, Poland
DOI: https://doi.org/10.15407/fz61.02.003


Abstract

The features of the formation of targeted tonic isometric effort created by muscles of the shoulder girdle and shoulder were compared for two opposite changes of the directions of arbitrary force vector - clockwise and counterclockwise. The magnitude of the effort vector remained constant. The intensity of the central motor commands (CMC) was evaluated according to the area of founded rectified, averaged and approximated electromyographic (EMG) recorded from the investigated muscles. The effort development was carried out in determined direction in operation space of the horizontal plane under angles of 75° in the shoulder joint and 90° in the elbow one. The synergic interaction of individual functional groups of muscles under certain reaction force was found. In the case of space, it was determined the main activity areas of the investigated muscles within the operating space. The differences were shown in the levels of EMG amplitude in opposite directions bypass of effort vector. Coactivation of flexor muscles was found, while the extensors showed their activity only within their functional sectors. Half of the investigated muscles showed an increase of the EMG amplitude for the counter-clockwise direction in relation to EMG amplitude for the clockwise direction. This can be attributed to more complex patterns of motor commands organization which consistently addressed to the muscles of the shoulder and forearm caused by atypical sequence of activation of antagonist muscles under making hand movements in cyclic mode during tonic isometric contraction

Keywords: two-joint isometric effort, central motor commands, force vector; electromyogram.

Full text: (PDF, in Ukrainian)

References

  1. Bernstein NA. Physiology of movement and activity. 1st ed. Moskow: Nauka; 1990. [Russian].
    2.  
  2. Cheung VC, Turolla A, Agostini M, Silvoni S, Bennis C, Kasi P, Paganoni S, Bonato P, Bizzi E. Muscle synergy patterns as physiological markers of motor cortical damage. Proc Natl Acad Sci U S A. 2012; 109: 14652:56.
    3.  
  3. Culham E, Peat M. Functional anatomy of the shoulder complex. J Orthop Sports Phys Ther. 1993; 18: 342:50.
    4.  
  4. Sherrington C. Reflex inhibition as a factor in the coordination of movement and posture. Q J Exp Physiol. 1913; 6: 251:310.
    5.  
  5. Terry GC, Chopp TM. Functional anatomy of the shoulder. J Athl Train. 2000; 35: 248:55.
    6.  
  6. Sinel'nikov RD. Atlas of Human Anatomy. 2nd ed. Moskow: State Publishing House of the medical literature; 1963.
    7.  
  7. Muceli S, Boye AT, d'Avella A, Farina D. Identifying representative synergy matrices for describing muscular activation patterns during multidirectional reaching in the horizontal plane. J Neurophysiol. 2010; 103: 1532:42.
    8.  
  8. Roh J, Rymer WZ., Beer RF. Robustness of muscle synergies underlying three-dimensional force generation at the hand in healthy humans. J Neurophysiol. 2012; 107: 2123:42.
    9.  
  9. Boland MR, Spigelman T, Uhl TL. The function of brachioradialis. J Hand Surg. 2008; 33: 1853:59.
    10.  
  10. Buchanan T.S., Rovai G.P., Rymer W.Z. Strategies for muscle activation during isometric torque generation at the human elbow. J Neurophysiol. 1989; 62: 1201:12.
    11.  
  11. Vereshchaka IV, Gorkovenko AV. Central activation of the human hand muscles during creation of isometric efforts: dependence on the position of the point of force application in the working space. Neurophysiology. 2011; 43(2): 281:83.
    12.  
  12. Vereshchaka IV, Gorkovenko AV, Khorevin VI. Peculiarities of activation of the shoulder belt and shoulder muscles in generation of different-direction isometric efforts by the forearm. Neurophysiology. 2010; 42 (4): 324:36.
    13.  
  13. Gorkovenko AV, Tal'nov AN, Korneev VV, Kostjukov AI. Peculiarities of activation of the shoulder belt and shoulder muscles of human during the execution of  arbitrary biarticular arm movements. Neurophysiology. 2009; 41(1): 48:56.
    14.  
  14. Vereshchaka IV, Lehedza OV, Dornowski M, Gorkovenko AV, Khoryevin VI. The activity of muscles of the shoulder girdle and shoulder during the constant isometric efforts of the wrist. J Physiol. 2014; 60(3): 89:97.
    15.  
  15. Debicki DB, Gribble PL. Persistence of inter-joint coupling during single-joint elbow flexions after shoulder fixation. Exp Brain Res. 2005; 163: 252:57.
    16.  
  16. Gribble PL, Mullin LI, Cothros N, Mattar A. Role of cocontraction in arm movement accuracy. J Neurophysiol. 2003; 89: 2396:05.
    17.  
  17. Gribble PL, Ostry DJ. Independent coactivation of shoulder and elbow muscles. Exp Brain Res. 1998; 123: 355:60.
    18.  
  18. Tonkov VN. Normal human anatomy. 6th ed. Leningrad: Medgiz; 1962.
    19.  
  19. Peat M. Functional anatomy of the shoulder complex. Phys Ther. 1986; 66: 1855:65.
    20.  
  20. Escamilla RF, Yamashiro K, Paulos L, Andrews JR. Shoulder muscle activity and function in common shoulder rehabilitation exercises. Sports Med. 2009; 39: 663:85.
    21.  
  21. d'Avella A, Portone A, Fernandez L, Lacquaniti F. Control of fast-reaching movements by muscle synergy combinations. J Neurosci. 2006; 26: 7791:10.
    22.  

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