Metabolic Correlates of Fatigue and of Recovery from Fatigue in Single Frog Muscle Fibers
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چکیده
I N T R O D U C T I O N T h e mechan i ca l o u t p u t o f f rog whole muscles a n d of s ingle f ibers falls because o f fa t igue w h e n they are s t imu la t ed direct ly at low f r equenc ie s to p r o d u c e twitches or at h igh f r equenc i e s to p r o d u c e a t e t anus ( A s m u s s e n , 1934; Ramsey , 1953; Mar6cha l a n d M o m m a e r t s , 1963; Eber s t e in a n d S a ndow , 1963; V e r g a r a a n d R a p o p o r t , 1974). P r o l o n g e d s t i mu l a t i on can m a r k e d l y r educe musc le g lycogen ( K u g e l b e r g a n d E d s t r 6 m , 1968; B e r g s t r 6 m et al. , 1971) a n d p h o s p h o THE JOURNAL OF GENERAL PHYSIOLOGY " VOLUME 72, 1978 9 p a g e s 5 9 3 6 0 6 5 9 3 on Jne 4, 2017 D ow nladed fom Published November 1, 1978
منابع مشابه
Metabolic correlates of fatigue and of recovery from fatigue in single frog muscle fibers
Fatigue and recovery from fatigue were related to metabolism in single fibers of the frog semitendinosus muscle. The fibers were held at a sarcomere length of 2.3 microm in oxygenated Ringer solution at 15 degrees C and were stimulated for up to 150 s by a schedule of 10-s, 20-Hz tetanic trains that were interrupted by 1-s rest periods, after which they were rapidly frozen for biochemical analy...
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