588 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. 



The difference in level between the curves of the two squads is 

 significant but of unknown value, as records were not obtainable for 

 the normal condition of Squad A before they began the reduced diet. 

 As it was considered that the members of Squad A would have returned 

 to somewhat near their normal condition by May 21, it was arranged 

 that the 6 members of Squad A who still remained in college should 

 take a strength of grip test with the same instrument and under the 

 usual instructions and supervision. The data which were gathered 

 are included in table 161 for the evening record. The data for each 

 subject may be conveniently compared with the low-diet average 

 immediately above. For May 21 Bro shows a right-hand average of 

 51.0 kg. as compared to a low-diet average of 51.6 kg., and a left-hand 

 average of 45.8 compared to a low-diet average of 45.3 kg. ; that is, with 

 this subject there is practically no change. With the other 5 subjects, 

 however, the condition is very different : Can shows for the right hand a 

 rise from 54.0 to 57.5 and for the left hand from 47.6 to 53.9; Moy's 

 record for the right hand changes from 44.5 to 52.6 and for the left 

 hand from 42.1 to 52.4. Pea said his wrist was still weak and ineffi- 

 cient; his records 

 show, however, an 

 increase from 41.6 

 to 50.8 for the 

 right hand and 

 from 50.3 to 55.7 

 for the left hand. 

 Spe gave a right- 

 hand score which 

 changed from 46.6 

 to 47.5, and for 

 the left hand 46.5 

 to 48.1, and lastly, 

 Vea shows right 

 hand 45.4 to 51.9 

 and left hand a 

 record of 41.1 as 

 compared with his 

 later average of 

 46.1. The aver- 

 ages for these 6 

 subjects of Squad 



A during the low-diet period were right hand, 47.3, left hand, 45.5, as 

 compared with the scores for May 21 with right hand 51.9 and left hand 

 50.3. The variabihty figures for these records of May 21 are, on 

 the average, the smallest found at any time for Squad A, thus indi- 

 cating great consistency in the records of that date. It seems very 



Fig. 107. — Averages for strength of grip at evening sessions and 

 with six members of Squad A on one date following the low- 

 diet experiment. 



R and L designate right and left hands. Solid line curves represent 

 Squad A, and broken lines Squad B. 



