Analysis of changes in routine blood biomarkers,biochemical indexes and thyroid function of recruits during cold acclimatization in a cold region

WANG Kai; FANG Xiaojian; XU Tubing; YANG Shenghong

doi:10.13276/j.issn.2097-1656.2024.01.020

Abstract：Objective To follow up the changes of routine blood biomarkers,biochemical indexes,thyroid function and index of vaso-response to cold(VRCI)of recruits in cold environment,so as to understand the changes of routine blood biomarkers,biochemical indexes,thyroid function and other physiological indexes of recruits during cold acclimatization in a cold region.Methods A total of 167 recruits from a military unit in northwest China were selected to undergo routine blood test,biochemical test,thyroid function test and VRCI test at the time of enlistment and 6 months after enlistment.Results After 6 months,the VRCI of both southern and northern recruits significantly increased(P＜0.05).In addition to the white blood cell count was significantly lower than that of enlistment(P＜0.05),other indexes such as red blood cell count,hemoglobin,hematocrit and platelet count were significantly higher than those of enlistment(P＜0.05),but there was no statistical difference in mean corpuscular volume between the two groups.In the biochemical indexes,there were significant differences in albumin and cholesterol(P＜0.05)but no statistical differences in other indexes between the two groups.In the thyroid function test indexes,the levels of free triiodothyronine and thyroxine were significantly lower than those of enlistment(P＜0.05),and the levels of triiodothyronine,free thyroxine and thyroid-stimulating hormone were significantly higher than those of enlistment(P＜0.05).Conclusion This study explores the effective evaluation index of cold acclimatization ability by analyzing and mastering the dynamic changes of blood indexes and VRCI of recruits during cold acclimatization in a cold region,which lays the foundation for developing training programs and cold injury prevention measures.