The structure of functional synergy that ensures the preservation of the orthograde posture of a person

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The paper considers the process of interaction of individual muscles and muscle groups serving various joints of the body in order to stabilize vertical stability disorders caused by respiratory movements of the chest. The most significant control variables in the process of regulation of intermuscular interaction in order to maintain the stability of the vertical position of the body are considered. The analysis was performed using factorization of muscle electrical activity data, values of articular angles and movements of body segments. It was found that the strategy of maintaining a vertical stance is associated with the control of the hip and neck segments, and with an increase in the disturbing effect, other segments of the body are involved in synergy. An increase in the depth of breathing is accompanied by the inclusion of previously unused muscle modules and a change in the degree of involvement of each muscle in the process of regulating the vertical posture. Such inclusion is reflected in the temporal pattern of activation of synergies at the muscular level, which manifests itself in the formation of additional activation peaks in individual phases of the respiratory cycle. In the process of maintaining vertical stability, muscle activity is moderately associated with the regulation of the position of the general center of mass, and is more directed at the formation of kinematic synergies, including changes in the values of a number of articular angles and simultaneous movement of most body segments. The latter, in turn, stabilize variables important for maintaining equilibrium, and synergetic control at the kinematic level increases as the depth of breathing increases.

Толық мәтін

Рұқсат жабық

Авторлар туралы

S. Moiseev

Velikiye Luki State Academy of Physical Education and Sports

Хат алмасуға жауапты Автор.
Email: sergey_moiseev@vlgafc.ru
Ресей, Velikiye Luki

S. Ivanov

Velikiye Luki State Academy of Physical Education and Sports

Email: sergey_moiseev@vlgafc.ru
Ресей, Velikiye Luki

Е. Mikhailova

Velikiye Luki State Academy of Physical Education and Sports

Email: sergey_moiseev@vlgafc.ru
Ресей, Velikiye Luki

R. Gorodnichev

Velikiye Luki State Academy of Physical Education and Sports

Email: sergey_moiseev@vlgafc.ru
Ресей, Velikiye Luki

Әдебиет тізімі

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2. Fig. 1. Typical recording of a goniogram, pneumogram (A) in the basic stance with normal and deep breathing. B — coefficients of cross-correlation functions calculated between rows of pneumograms and goniograms, data are presented as M ± SD ± SE. 1 — pneumogram. Angles: 2 — cervical, 3 — shoulder, 4 — elbow, 5 — hip, 6 — knee, 7 — ankle.

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3. Fig. 2. Samples of electromyograms (EMG) of skeletal muscles in the basic stance during normal breathing. A — averaged EMG, B — smoothed. B — correspondence of EMG signals of skeletal muscles and pneumogram, data are presented as M ± SD ± SE. On the ordinate axis — coefficients of cross-correlation functions. The vertical dotted lines show the boundaries of respiratory cycles.

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4. Fig. 3. Structure of extracted components, including data on the movements of anthropometric points of body segments during normal breathing. A — activation coefficients, along the abscissa axis — progress of the respiratory cycle, along the ordinate axis — conventional units, a — component 1, b — component 2. The fill shows the spread of coefficients. B — dendrogram of movements, along the abscissa axis — anthropometric points, along the ordinate axis — Euclidean distance (conventional units).

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5. Fig. 4. Weight coefficients in the structure of kinematic (A) and muscle synergies (B) during normal and deep breathing. a — component 1, b — component 2. Angles: 1 — neck, 2 — shoulder, 3 — elbow, 4 — hip, 5 — knee, 6 — ankle. Coefficients on the ordinate axis. * — statistically significant differences at p < 0.05. Solid and dotted lines show synergy vectors.

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6. Fig. 5. Activation coefficients of kinematic (A) and muscular synergies (B) during normal and deep breathing. a — component 1, b — component 2. The abscissa axis is the time period corresponding to the complete respiratory cycle (%), the ordinate axis is the standard units.

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