Letter: "Caecal squelch" and appendicitis.

Abstract

The very fit man had the highest rise, from 0 9 to 10 9 ,ug/I. In contrast, the level in the older Greek runner remained virtually unchanged (0-8 and 1-0 ,g/l). Our investigation confirms the significant rise of plasma GH previously reported after physical exercise.'-3 This work is one of a series of studies on the effects of physical exercise on plasma hormones and muscular metabolism. We hope to find tests to distinguish in advance between men who are fit enough to run the marathon and those for whom it may be dangerous.4 That such tests may be necessary has already been demonstrated by the case of Philippides, the dispatch-runner who died on arrival at Athens after the Battle of Marathon on 22