ABSTRACT
Objective To study the differences in 24 h ambulatory blood pressure of healthy young men between the plateau and the plains.Methods A total of 100 young men were enrolled in this study.They underwent 24 h ambulatory blood pressure monitoring on the plateau and on the plains respectively.The data was analyzed by SPSS.17.Results The 24 h mean systolic blood pressure (24HMSBP) and diastolic blood pressure (24HMDBP),day (6:00-22:00) mean systolic blood pressure (DMSBP) and diastolic blood pressure (DMDBP),night (22:00-6:00) mean systolic blood pressure (NMSBP) and diastolic blood pressure (NMDBP),24 h mean heart rate (24MHR),HRmax,HRmin,24 h systolic blood pressure load (24HSBPL) and diastolic blood pressure load (24HDBPL),day (6:00-22:00) systolic blood pressure load (DSBPL) and diastolic blood pressure load (DDBPL),night (22:00-6:00) systolic blood pressure load (NSBPL) and diastolic blood pressure load (NDBPL) were significantly different between the plateau and plains (all P ＜ 0.05).However,the systolic blood pressure decrease rate (SBPDR) and the diastolic blood pressure decrease rate (DBPDR),day systolic blood pressure coefficient of variation (DSBPCV) and diastolic blood pressure coefficient of variation (DBPCV),night systolic blood pressure coefficient of variation (NSBPCV) and diastolic blood pressure coefficient of variation (NBPCV) were not significantly different (P ＞ 0.05).Conclusion The systolic blood pressure (SBP)and diastolic blood pressure (DBP) on the plateau are significantly higher than those on the plains.24HMDBP and DMDBP increase more significantly on the plateau than those of SBP.The blood pressure load (BPL) on the plateau is higher than that on the plains,with a higher degree of dispersion,so are the 24 h mean heart rate (24MHR),HRmax,and HRmin.