John Henryism and Blood Pressure

Keimyung Medical Journal 1989;8(2):290-298.

John Henryism과 혈압

이충원; 서석권

Abstract

The Hypothesis was tested that the John Henryism would be associated with blood pressure and it would have interaction with stress-coping resources on the blood pressure measured by the Perceived Social Support Scales(PSSS) in 168 persons undergoing the preemployment examinations comprised of 83 males and 85 females(mean age 19.4; S.D. 3.13)’ November 1988. The John Henryism Scales for Active Coping(JHAC12) was distributed normally with mean 45.6; standard deviation 6.2; median 45;and range 26?59. The reliability coefficients was 0.79 for both sexes. The factor analysis yielded 3 factors which was extracted by principal component analysis. The main effect of social support on John Henryism was statistically significant(P = 0.00); and interaction effect of sex and social support was significant also(P=0.02) and that of age and social support marginally(P = 0.08). The main effect of John Henryism on blood pressure was negligible in both sexes but after adjusting for amounts of smoking and alcohal intake it became statistically significant(P= 0.05) in male diastolic blood pressure. Men showed no interaction of John Henryism with social support. Among women; however; there was interaction with borderline significance(P = 0.057) in systolic blood pressure and the main effect of social support was significant(P = 0.04) in diastolic blood pressure without any significant interaction. But the direction of the interaction supported the hypothesis. These results suggest that the interactions of John Henryism with stress-coping resources on blood pressure may be present in socioeconomic-cultural settings other than American blacks’ which were envisioned originally.