Remarks on the effect of resistance excercise upon the circulation in man : local and general / by T. Lauder Brunton and F.W. Tunnicliffe.

  • Lauder Brunton
Date:
[1897?]
Catalogue details

Licence: Public Domain Mark

Credit: Remarks on the effect of resistance excercise upon the circulation in man : local and general / by T. Lauder Brunton and F.W. Tunnicliffe. Source: Wellcome Collection.

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    Chg ant typ et t Reprinted for the Authors from the British MEDICAL JOURNAL, October 16th, 1897. a REMARKS 4 ON THE EFFECT OF RESISTANCE EXERCISE UPON THE CIRCULATION IN MAN, LOCAL AND GENERAL. BY T. LAUDER BRUNTON, and F. W. TUNNICLIFFE, M.D., F.R.S. M.D., M.R.C.P. Physician, St. Bartholomew’s Hospital. THE extensive therapeutic use of so-called resistance exer- cises in certain disturbances of the circulation made it, in 4, our opinion, of interest to find out what changes occurred in i the circulation in man during and after the practice of these exercises. — : Before passing to the description and discussion of our mt experiments, we may consider briefly what is known of the ‘ local and general effects upon the circulation of the contrac- tion of a muscleor group of muscles. Ludwig and his pupils, Sezelkow, Sadler,:.and Gaskell, were the first to investigate * this subject exactly. Two points in Sadler’s results are of interest to us in this connection. He found that more blood passed through a muscle when in a condition of contraction than when at rest, and that the most blood in a unit of time mpaged through a muscle immediately after ifs contraction. e further found that when a group of muscles were made to contract but were prevented from changing their form, that is, from becoming shortened, considerably more blood passed through them in unit time than passed through muscles thrown into contraction and also shortened. Gaskell’s? results in the main confirm Sadler’s. The points of difference which are of interest to us are, that in cases of muscles thrown into tetanus fora short time (15 seconds)’, there often occurred no increase in the rate of flow during the contraction, when the spurt of blood coincident with the commencement of the tetanus had ceased. Further, that the maximum rate of flow was always obtained either directly after the cessation of a tetanus, or in cases of tetanus of rela- tively long duration at the end of the tetanus. This latter result was constant, ee
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