Sex and Age Differences in Post-tetanic Potentiation

Details Sex and Age Differences in Post-tetanic Potentiation Sex and Age Differences in Post-tetanic Potentiation

Sep 1962

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962natur.195.1006t&link_type=abstract

Nature, Volume 195, Issue 4845, pp. 1006 (1962).

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Scientific paper

POST-TETANIC potentiation has been investigated by a large number of authors in animal muscles1, but only rarely in other structures and in man. According to Peregrin2, post-tetanic potentiation in man is in close relation to the action-rest phenomenon of Sechenov. We have examined in 319 children aged 10-16 the activation of dynamic (phasic) work of the hand following static strain of 15-20 sec; the same hand working thus without rest. A mercury dynamometer was used, the frequency of work being 1 contraction in 1 sec. Five contractions after the static strain were statistically correlated with the last five contractions before it. A statistically significant rise was observed in only half my 1,188 experiments (51.86 per cent girls, and 48.40 boys), which is markedly less than in the group of higher age studied by Peregrin.

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