COMPARISON OF CONTRACTION TIMES OF A MUSCLE AND ITS MOTOR UNITS

被引：1

作者：

ELDRED, E

SMITH, L

EDGERTON, VR

机构：

[1] UNIV CALIF LOS ANGELES,DEPT PHYSIOL SCI,LOS ANGELES,CA 90024

[2] UNIV CALIF LOS ANGELES,INST BRAIN RES,LOS ANGELES,CA 90024

来源：

NEUROSCIENCE LETTERS | 1992年 / 146卷 / 02期

关键词：

CONTRACTION TIME; WHOLE MUSCLE VS MOTOR UNIT; GASTROCNEMIUS; SOLEUS; CAT;

D O I：

10.1016/0304-3940(92)90077-K

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The twitch contraction time (CT) for each of 13 soleus (SOL) and 13 medial gastrocnemius (MG) muscles was compared with the mean CT from a sample of its motor units (MUs; 356 total) to see if the CT of a who- re muscle when tested at its optimal length (Lo) differed systematically from that of its MUs tested at their individual Lo's. The CTs of the whole muscle were significantly longer in the ratio of 1.13. This is consistent with a hypothesis that electrical-field effects result in a more protracted contraction of the individual muscle fiber.

引用

页码：199 / 202

页数：4

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