Changes in electrophysiological properties of rat hindlimb spinal motoneurons evoked by the whole body vibration

• Autorzy: Mrowczynski W. , Baczyk M. , Haluszka A. , Celichowski J. , Krutki P.
• Języki publikacji: EN

Abstrakty

EN

The whole body vibration training was performed on adult male Wistar rats. The experimental group subjected to a whole body vibration consisted of seven rats, while the control group of nine rats. The training program included 5 weeks and was applied by 5 days a week. Each daily session consisted of four 30-s runs of vibration at 50 Hz. Intracellular properties of motoneurones were investigated during experiments on deeply anesthetized animals. It was demonstrated that a whole body vibration evoked adaptations in excitability and firing properties of fast-type motoneurons, exclusively. A significant decrease in rheobase current and a decrease in the minimum and the maximum currents required to evoke steady-state firing in motoneurons were revealed. These changes resulted in a leftward shift of the frequency-current relationship, combined with an increase in slope of this curve. These results showed that fast motoneurons of rats after vibration have the ability to produce series of action potentials at higher frequencies in a response to the same intensity of activation. Obtained data provided direct evidence on motoneuronal plasticity following a whole body vibration.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2013
• Tom: 73
• Numer: Suppl.1
• Opis fizyczny: p.34

Twórcy

autor

Mrowczynski W.

• Department of Neurobiology, University School of Physical Education, Poznan, Poland

autor

Baczyk M.

• Department of Kinesiotherapy, University School of Physical Education, Poznan, Poland

autor

Haluszka A.

• Department of Neurobiology, University School of Physical Education, Poznan, Poland

autor

Celichowski J.

• Department of Neurobiology, University School of Physical Education, Poznan, Poland

autor

Krutki P.

• Department of Neurobiology, University School of Physical Education, Poznan, Poland