The postnatal development of some twitch and fatigue properties of the ankle flexor and extensor muscles of the cat.

Acta Physiologica Scandinavica
C Hammarberg, J O Kellerth

Abstract

The isometric responses of the medial gastrocnemium (MG), soleus (SOL) and anterior tibial (TA) muscles to single shocks and different modes of repetitive stimulation were studied in kittens of varying postnatal ages and in adult cats. The postnatal decrease in time-to-peak and half-relaxation time of the twitch contractions were similar for the MG and TA muscles and adult values were attained at around 6-7 weeks of age. The SOL muslce displayed a transient decrease in contraction time during the first postnatal weeks, followed later by a slowing towards adult values. The susceptibility to fatigue during iterative stimulation was smallest in the SOL at all ages studied, and usually largest in TA. It changed only little for the MG and SOL postnatally while increasing markedly for the TA up until 6-7 weeks of age. Tetanic contraction resulted in similar depressions in contractile tension of all three muscles in the youngest kittens, but the SOL displayed a greater ability to recover from this depression than the MG and, in particular, the TA muscles. Tetanus resistance increased postnatally and adult responses were attained at 6-7 weeks of age.

References

Nov 1, 1973·The Journal of Physiology·R E BurkeF E Zajac
Jan 1, 1968·Acta Neurologica Scandinavica·B Nyström
Aug 1, 1971·Acta Physiologica Scandinavica·A Mellström
Sep 1, 1971·Acta Physiologica Scandinavica·J O KellerthS Skoglund
Nov 1, 1968·Acta Physiologica Scandinavica·B Nyström
Sep 1, 1968·Acta Physiologica Scandinavica·B Nyström
Oct 1, 1967·The Journal of Physiology·R Close, J F Hoh
Jan 1, 1953·Quarterly Journal of Experimental Physiology and Cognate Medical Sciences·G GORDON, C G PHILLIPS
Mar 29, 1954·The Journal of Physiology·P A MERTON
Feb 28, 1956·The Journal of Physiology·N EMMELIN, F C MACINTOSH
Feb 1, 1960·The Journal of Physiology·A J BULLERR M ECCLES
May 1, 1964·The Journal of General Physiology·F G STANDAERT
May 1, 1965·Archives of Neurology·F C ROMANUL
May 1, 1965·Journal of Neurophysiology·E HENNEMAN, C B OLSON

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Citations

Apr 1, 1988·Pflügers Archiv : European journal of physiology·L Szentkuti, J Sallai
Oct 1, 1989·Brain Research. Developmental Brain Research·W E Cameron, H Fang
May 22, 1998·Neuroscience and Biobehavioral Reviews·D Kernell
Jul 1, 1984·Experimental Neurology·N KowalchukK Corley

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