Passive muscle stretching reduces estimates of persistent inward current strength in soleus motor units
نویسندگان
چکیده
منابع مشابه
An evaluation of paired motor unit estimates of persistent inward current in human motoneurons.
Persistent inward current (PIC) plays an important role in setting the input-output gain of motoneurons. In humans, these currents are estimated by calculating the difference between synaptic input at motor unit recruitment and derecruitment (ΔF) derived from paired motor unit recordings. The primary objective of this study was to use the relationship between reciprocal inhibition (RI) and PIC ...
متن کاملEffect of passive stretching on the immobilized soleus muscle fiber morphology.
The aim of the present study was to determine the effect of stretching applied every 3 days to the soleus muscle immobilized in the shortened position on muscle fiber morphology. Eighteen 16-week-old Wistar rats were used and divided into three groups of 6 animals each: a) the left soleus muscle was immobilized in the shortened position for 3 weeks; b) during immobilization, the soleus was stre...
متن کاملProperties of Motor Units in a Homogeneous Red Muscle (soleus) of the Cat.
THE INFORMATION WHICH IS AVAILABLE on the properties of motor units in skeletal muscles is chiefly of an indirect nature, having been inferred from observations on whole muscles. Although a muscle is no more than an assembly of motor units, the collective properties of the whole do not convey much information about its parts. The innervation ratios, contraction times, and tensions of motor unit...
متن کاملProperties of Motor Units in a Homogeneous Red Muscle (soleus) of the Cat1
THE INFORMATION WHICH IS AVAILABLE on the properties of motor units in skeletal muscles is chiefly of an indirect nature, having been inferred from observations on whole muscles. Although a muscle is no more than an assembly of motor units, the collective properties of the whole do not convey much information about its parts. The innervation ratios, contraction times, and tensions of motor unit...
متن کاملDevelopment of homogeneous fast and slow motor units in the neonatal mouse soleus muscle.
We studied the fiber type composition and contractile properties of mouse soleus motor units at 2 days, 5 days and 2 weeks of age. We used Lucifer Yellow injection to mark muscle fibers belonging to the same motor unit in the two youngest age groups, and the traditional method of glycogen depletion in the oldest. The age groups were chosen because 2 days is at the end of muscle fiber production...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2020
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.229922