258 



HUMAN BEHAVIOR PROGRAM 



and six were first class petty officers. Whether Navy or civilian, officer or enlisted man, 

 every one of the aquanauts in Sealab was fully committed to his career. In response to the 

 question, "In general, how do you feel about your present occupation?" all men chose the re- 

 sponse, "I am strongly dedicated to a career in my present field." The unanimous answer to 

 this question probably sums up as well as any battery of questions could why these men were 

 in Sealab. For comparative purposes, it can be noted that the answer to this question is far 

 from unanimous for men participating in Project Deep Freeze. Men of Deep Freeze include 

 Navy and civilian specialists who winter over in the Antarctic. 



Table 25 

 SEALAB II AQUANAUTS - CIVILIAN/NAVY STATUS 



Psychomotor Tests 



Strength Test — The data comparing performance on land with that during submersion are 

 shown in Table 26. 



Table 26 

 COMPARISON OF STRENGTH-TEST DATA ON LAND AND SEALAB SUBMERSION 



(RECORDED IN FT-LB) 



''Difference scores are computed by comparing each individual's performance on dry land 

 and in Sealab when the same individual performed the test under both conditions. Twelve 

 men performed the pull test both on dry land and in Sealab. Thirteen men performed the 

 lift test in both locations. 



It is evident that exertable force decreased under Sealab II conditions, particularly for the 

 pull test. This may reflect, in part, the difficulty of performing the test when the feet cannot 

 be anchored as firmly as on dry land and, in part, the relatively greater attrition that smaller 

 muscle groups may suffer due to cold as compared to larger muscle groups. In discussing 



