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  • Title: Cardiovascular risk factors in submariners.
    Author: Tappan DV, Mooney LW, Jacey MJ, Heyder E.
    Journal: Undersea Biomed Res; 1979; 6 Suppl():S201-15. PubMed ID: 505627.
    Abstract:
    A sizeable group of biochemical, hematologic and physiologic variables that significantly affect the prognosis for diseases of aging, especially for coronary heart disease (CHD), were studied in 1017 submariners. Skinfold thickness in these subjects was determined to be higher than in most other groups of men of similar age; the total level of body fat was within the range of high normality. Serum cholesterol levels, cigarette smoking, relative weight, and blood pressure appeared to be the factors most directly responsible for the extent of cardiovascular risk in this group of submariners. Though submariners as a group do not apparently have appreciably higher levels of CHD risk than other American men, there was a significant tendency for total risk to increase with length of submarine service as well as with age. A similar age-independent increase in serum cholesterol correlating with length of submarine service was reported earlier. Split-sample analyses support the reliability of the age-corrected correlations of CHD risk with time of submarine service. Although no attempt was made to prove a direct relationship between alcohol consumption or coffee drinking and cardiovascular risk, there were strong correlations noted. These factors, combined with serum cholesterol levels, cigarette smoking, and relative weight, deserve consideration as potentially modifiable CHD risks.
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