Word: eosinophil
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Dates: during 1951-1951
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...grueling race over four miles; Harvard won in the last seconds by a quarter of a length. The eosinophil average at race's end: three for both oarsmen and cox. Harvard Coach Tom Bolles' own eosinophil drop: from 101 before the race to six after...
...oarsmen's reactions to stress. Dr. George W. Thorn (TIME, May 21) acted on the theory that in a normal, healthy reaction to physical or emotional stress the adrenal cortex is stimulated. It then puts out more hormones, which (among other effects) cut down the number of eosinophils (a type of white cell) circulating in the blood. Thus a series of before & after eosinophil counts might show whether a man's reaction to stress is normal...
Renold took random samples when there was no stress, got an average eosinophil index of 123 for the varsity crew. After a practice pull, the oarsmen's eosinophil average dropped to 19. When the day of the Yale race came, the counts were down to an average of 64 before anybody had lifted an oar. The coxswain's was down...
...Thorn thesis, all the Harvard-men showed a "healthy" response to stress; eosinophil counts showed a drop proportionate to exhaustion. If an exhausted man's count had failed to show a drop of 50% or more, Thorn would have regarded it as a sign that the adrenal cortex was not producing the extra hormones which the body demands under stress...
...Harvard testers believe that their technique can be adapted to measure a man's aptitude for dangerous, "stressful" assignments of many kinds, e.g., commando duty. Men who become exhausted after a rugged route march, but without a proportionate eosinophil drop, would be eliminated as dangerously hormone poor...
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