作 者: (古强);
机构地区: 中国矿业大学体育学院,江苏徐州221116
出 处: 《内蒙古师范大学学报(自然科学汉文版)》 2017年第4期616-620,共5页
摘 要: 研究12周有氧运动抑或抗阻训练对单纯性肥胖患者自主神经功能影响的差异性.把55名肥胖患者随机分为有氧运动组(AE组,n=18)、抗阻训练组(RT组,n=18)和安静对照组(RC组,n=19).AE组进行有氧运动,RT组进行抗阻训练,时间均为12周(3次/周),RC组保持安静状态.分别于实验前后利用无创检测技术测定受试者的心率变异性(HRV)、血压变异性(BPV)和压力反射敏感性(BRS).实验后,AE组心率、血压、LF、LF/HF和LFSBP下降(P<0.05或P<0.01),HF和BRS升高(P<0.01);RT组心率无显著性变化(P>0.05),血压和LFSBP下降(P<0.05或P<0.01);RC组血液动力学及自主神经功能参数均无显著性变化(P>0.05).因此,不同运动方式对单纯性肥胖患者自主神经功能均可产生积极影响,但机制不同,其中有氧运动降低交感调制,增加迷走张力,改善压力反射功能,而抗阻训练则减弱交感缩血管调制,对迷走调制以及压力反射功能无明显影响. To compare the effects of 12-week resistance training or aerobic exercise on autonomic nervous function in simple obese patients. Fifty-five obese patients were divided to aerobic exercise group (AE, n = 18), resistance training group (RT, n = 18) and resting control group ( RC, n = 19), in which the subjects of AE group performed aerobic exercise, RT group conducted resistance training of 12 weeks (3 times per week) while RC group sustained daily normal life. Blood pressure variability (BPV), heart rate variability (HRV) and baroreflex sensitivity (BRS) by non-invasive detective technology were determined before and after the experiment. After test, heart rate, blood pressure, LF, LF/HF and LFsBe reduced (P〈0.05 or P〈0.01),HF and BRS raised (P〈0.01) in AE group while heart rate had no change (P〈0.05) ,blood pressure and LFSBP reduced (P〈0.05 or P〈0.01) in RT group; there were no significant difference of hemodynamic and autonomic parameters in RC group (P〉0.05). There existed significant difference between resistance training and aerobic exercise on autonomic nervous function in obese patients. Aerobic exercise decreased sympathetic modulation,increased vagal tone and improved baroreflex function,while resistance training attenuated sympathetic vasoconstrictive modulation, but had no effect on vagal modulation and baroreflex function.