Yang Wei, Fan Xiao-li, Song Xin-ai
Department of Physiology, Medical School of Xi'an Jiaotong University, Xi'an Shannxi, China.
Space Med Med Eng (Beijing). 2005 Aug;18(4):259-61.
To study the effects of 100 Hz vibration on ultrastructure of intrafusal and extrafusal fibers in soleus muscle of tail-suspended rats.
Weightlessness was simulated by tail suspension of female rats. The ultrastructure of intrafusal and extrafusal fibers of soleus muscle were examined after exposure to 100 Hz vibration.
The ultrastructure of intrafusal and extrafusal fibers of soleus muscles showed obvious retrograde changes after 7 d tail suspension, whereas these changes were not obvious after 7 d tail suspension plus 100 Hz vibration.
High frequency vibration can counteract the effect of simulated weightlessness on ultrastructure of intrafusal and extrafusal fibers in soleus muscles of rats.
研究100赫兹振动对尾部悬吊大鼠比目鱼肌梭内和梭外肌纤维超微结构的影响。
通过雌性大鼠尾部悬吊模拟失重。在暴露于100赫兹振动后，检查比目鱼肌梭内和梭外肌纤维的超微结构。
尾部悬吊7天后，比目鱼肌梭内和梭外肌纤维的超微结构出现明显的逆行性改变，而在尾部悬吊7天加100赫兹振动后，这些改变不明显。
高频振动可抵消模拟失重对大鼠比目鱼肌梭内和梭外肌纤维超微结构的影响。
