高强度间歇与中强度持续有氧训练对经皮冠状动脉介入术后运动康复分层低危患者的影响

目的:探讨高强度间歇与中强度持续有氧训练对经皮冠状动脉介入术(PCI)后运动康复分层低危患者的影响。方法:选取PCI术后运动康复分层低危患者43例，按照随机数字表法将其分为高强度间歇有氧训练组(高强度间歇组，22例)和中强度持续有氧训练组(中强度持续组，21例)。2组患者均采用功率自行车进行训练，高强度间歇组采用高强度...

Effects of high-intensity interval training and moderate continuous aerobic exercise after a percutaneous coronary intervention

Objective To evaluate the clinical effect of high-intensity interval training and moderate continuous aerobic training on patients classified as low risk for exercise rehabilitation after a percutaneous coronary intervention(PCI).Methods A total of 43 patients considered low-risk after a PCI were randomly divided into a high-intensity interval training group(HIIT group,22 cases)and a moderate continuous aerobic training group(MCT group,21 cases).The HIIT group received high-intensity,but aerobic interval training involving 8 rounds of 3 minutes of high-intensity exercise with 2-minute intervals at 80%of peak power over 40 minutes,3 times a week.The MCT group trained continuously at 60%of peak power for the same duration.After 12 weeks both groups were given an ultrasound examination and a cardiopulmonary exercise test to assess their cardiac functioning and exercise endurance.The subjects′life quality was evaluated and compared using some items from the SF-36 scale.Results Before the training,no significant differences were observed in the average left ventricular ejection fraction,stroke volume,peak power,peak oxygen uptake,anaerobic threshold,physiological functioning,physical pain,general health or social functioning between the two groups.After the training significant improvement in all these indicators was observed in both groups,but compared with MCT group,the average left ventricular ejection fraction,stroke volume,peak power and peak oxygen uptake of the HIIT group were significantly better.Conclusions High-intensity,aerobic interval training is superior to moderate but continuous aerobic training for improving the cardiac functioning and exercise endurance of patients suitable for exercise rehabilitation after a PCI.But there is no significant difference in their effect on the short-term quality of life.