Fisher — The Effect of Diet on Endurance. 25 



but I made 11 or 12 and could have ifone several more. Considerinsr 

 everything, I have no doubt that I was able to hang on much longer, 

 after I began to get tired, ihan in January. 



I am at a loss to ascribe the increased endurance to anything else 

 than to the diet. M}'- way of living otherwise continued about the 

 same after the Januar^^ test as it was before. . . . Personally I 

 am convinced that the increased endurance must be due to diet and 

 manner of eating ; all other factors that I can think of are unfavor- 

 able rather than favorable to. more endurance. I am convinced to 

 the extent that I shall certainlv continue " Fletcherizing" and usino- 

 a low-proteid diet. 



(E) All effects of [June] test disappeared entirely Avithin four 

 days. [Effects of January test lasted six days.] 



(Lq) The stiffness and soreness had entirely disappeared in four 

 days. It was not nearly so severe as the test in January. After I 

 was through in January I could hardly go down the stairs of the 

 Gymnasium, and three days after the test going up and down stairs 

 was accompanied with a great deal of pain. ... I was stupid 

 mentally for a whole week the first time, but in the last test I passed 

 that stage in a couple of days. . . . Had it not been for the late 

 hours and long stretches of work, I should have been able to make a 

 better comparison Avitli conditions in January, though as it was 

 results show improvement. . . . 



I cannot say as to the help mentally I have derived, for I have, 

 always gone to my limit and I would be unwilling to make any posi- 

 tive statement. As for the physical, I know there is an improve- 

 ment there, for my stomach, which was never so very strong, has 

 been gi-eatly helped. 



(Lw) There was no stiffness or soreness felt in the triceps or the 

 stomach muscles as the result of the last tests. The thieh muscles 

 were a little stiff on the second day only — about such stiffness as one 

 might expect from a long walk. The calves of my legs began to 

 stiffen on Friday [June 15, 1906, the day after the test] and continued 

 to do so on Saturda}', after which the stiffening began to lessen, and was 

 scarcely felt on Monday. The biceps of my right arm gave me the 

 most trouble. These were sore on Frida}' A. M. and continued to 

 increase in soreness till Sunday evening, feeling Avorst, however, 

 Sunday A. M. When I arose Mondav A. M. all the soreness and 

 stiffness had disappeared. A peculiarity about the latter whicli im- 

 pressed me was the fact that although my arm was very sore it did 

 not seem to be v^ry stiff. After the tests in January I could not 



