Annals of Occupational and Environmental Medicine

Original Article

Effect of Occupational Lead on Male Sex Hormones: Hyeong Su Kim, Soung Hoon Chang, Won Jin Lee, Jae Wook Choi, Jong Tae Park, Nam Won Paik, Rok Ho Kim; Korean Journal of Occupational and Environmental Medicine 2001;13(1):44-54. Published online March 31, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.1.44

Abstract PDF: OBJECTIVES
This study was performed to evaluate the relationship between biological markers of lead exposure and level of sex hormones in men occupationally exposed to lead.
METHODS
In this study, 33 male workers who employed at smelting and battery factories were compared with 33 male workers who were not exposed to lead. As biological markers of lead exposure, hemoglobin, ZPP, blood lead and urine lead were measured. As sex hormones, FSH, LH, testosterone, SHBG and FTI were determined.
RESULTS
Hemoglobin level was significantly lower in exposed than in nonexposed group. Level of ZPP, blood lead, and urine lead were significantly higher in exposed than in nonexposed group. There was a trend that level of FSH, testosterone, SHBG, and FTI was lower in exposed than in nonexposed group respectively, but there were no statistical significance. In exposed group, FSH level was correlated with age, ZPP, and blood lead; testosterone level was correlated with hemoglobin, blood lead, urine lead, and SHBG; and FTI level was correlated with age.
CONCLUSIONS
Level of some sex hormones were lower in exposed than in nonexposed group but there were no statistical significance between the exposed and the nonexposed group. But level of sex hormones were correlated with several biological markers of lead in exposed group. It suggests that occupational lead exposure might affect sex hormones.

Original Article

Effect of Height and Arm Length on Simple Reaction Time: Hyang Sook Kim, Chae Yong Lee, Jong Young Lee, Mun Suk Jyung, Hyeong Ryeol Yoon, Gwang Seo Choi; Korean Journal of Occupational and Environmental Medicine 1996;8(1):97-104. Published online February 29, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.1.97

Abstract PDF: To identify the relation between simple reaction time and height and arm length, simple reaction time was performed to medical students with measurement of height, and arm length. Participants should answer questions about Smoking, drinking, sleep deprivation, history of diseaseand drug, whether to use computer or hot Mean height of men(n=98) was 173.0+/-4.79 cm, that of women (n-22) 161.7+/-4.33 cm. Mean arm length of men was 73.5+/-3.09 cm, and that of women 68.0+/-2.93 cm respectively. Height and arm length were statistically significantly different between-men and women (plt;0.01). Mean simple reaction time of men was 265.4+/-25.03 msec, that of women 286.8+/-28.48 msec. Mean simple reaction time was also statistically significantly different(p<0.01). As a result of correlation analysis, for men. None was significant. However, for women, height and arm length showed statistically significant, correlation with mean reaction time. Correlation coefficient of height and arm length were 0.45 (p<0.05) and 10.57 (p<0.05) respectively.

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