经常运动对高原地区健康老年人心血管功能及血液相关指标的影响

目的:探讨高原地区经常参加体育运动对老年人心血管功能及血液相关指标的影响.方法:选择各30例经常参加有氧运动的高原地区(海拔≥2 600m)健康老年人和缺乏运动的健康老年人.记录24小时动态心电图的心率变异(HRV),应用动脉脉搏波速度(PWV)自动测量肱动脉-踝动脉(baPWV)和踝臂指数(ABI).安静状态血压、心...

Effects of Exercise on Cardiovascular Functions and Blood Indexes in Elderly at High Altitude

Objective:To describe the results with effects of aerobic exercise on the cardiovascular system and blood indexes in the elderly at high altitude.Methods:We designed two research groups of 30 elderly each.Exercise group in which participants acted aerobic exercise lonG-term,and control group in which participants have a lack of exercise.All participants migrated to Xining from higher altitude(2 260m above sea levels),and diabetes,hypertension and hyperthyroidism etc.were excluded.The five HRV indexes、the brachial-ankle pulse wave velocity(baPWV)、ankle-brachial index(ABI)、weight、BMI and pulse pressure(PP) were measured.The BP、HR and SaO2 were tested during exercise.RBC、MCV、Hb、Cr、BGS、Triglyceride(TG),cholesterol,high density lipoprotein-cholesterol(HDL) and low density lipoprotein-cholesterol(LDL) were assayed.Results:①RBC count was higher and serum BGS、TC and LDL was lower in exercise group as compared with control group(P<0.05),Nevertheless,no significant difference in level of MCV、Hb、Cr、TG and HDL between two groups;②level of weight、BMI 、blood pressure、PP and HR were decreased,as well as baPWV was low and ABI was high in exercise group as compared with control group(P<0.01);③The SDNN、 RMSSD and PNN50 were higher in exercise group than that in control group;④In exercise group,systolic blood pressure(SBP) showed an increasing tendency in two groups,and diastolic blood pressure(DBP) showed a decreasing tendency in exercise group with increased plenty exercise,contrast in controls;and after motion,the SBP and DBP bake to before motion in exercise group,but they recovered very slowly in controls.There were no changes on the SaO2 and HR in the exercise group before and after exercise.Conclusions:Our study showed appropriate aerobic exercise at high altitude will decrease arterial stiffness and improves HRV,where by the heart autonomic nervous function was improved.