计数法用于评估 COPD 患者运动强度的临床研究

摘要

Objective To explore the relationship between CS and heart rate in patients with COPD during exercise. Methods Two groups of persons were participated in this study,28 outpatients with chronic obstructive pulmonary disease(COPD)(22 males;6 females;with age at 66. 6 ± 8. 22 years old)from the Department of Respiratory Medicine of Beijing Friendship Hospital were allocated in group 1,they were di-agnosed as chronic obstructive pulmonary disease(COPD)during January 2014 to July 2014,and 25 healthy persons(3 males;22 females;aged at 24. 8 ± 2. 80 years old)were listed in group 2 for control. After being introduced with the experimental method and guided with trial tests,these persons were first exercised with cycle ergometer until the heart rate increased by 20% to the stable value,CS test started afterwards,the CSN and average heart rate were recorded and labeled as CSN1 and HR1,respectively. These persons then took the treadmill test after rest for thirty mi-nutes. The exercise intensity was adjusted by changing the treadmill speed till CSN fell into CSN1 ± 5,then CSN and the average heart rate were recorded and labeled CSN2 and HR2,respectively. Results The values of HR1 and HR2 in each group were compared with paired t test. No sig-nificant difference had been observed in both group 1( t = - 1. 523,P = 0. 139)and group 2( t = - 1. 427,P = 0. 167). HR1 and HR2 showed significant correlation in both groups,with a correlation coefficient r = 0. 932 in group 1 and r = 0. 944 in group 2. Conclusion CS shows good correlation with heart rate of patients with COPD,and it can be used as a self - evaluation indicator to determine the exercise intensity for guidance of the rehabilitation and daily exercise.%目的：探讨运动中计数法（CS）与慢性阻塞性肺疾病（COPD）患者心率乃至运动强度的相关性。方法收集两组人群参加测试，第一组为2014年1月至2014年7月北京友谊医院呼吸科门诊 COPD 患者，共28人；第二组为健康人群，共25人。讲明实验方法并指导患者试做后，受试者先进行功率自行车运动，待心率较静息心率上升20%左右，开始 CS 测试，记录计数值（CSN1）和平均心率（HR1）；休息30 min 后进行平板运动，增减平板速度来调节运动强度，通过受试者的 CSN 来估计运动强度，当 CSN 在 CSN1±5以内时，记录为 CSN2，该时间段的平均心率记为 HR2。结果分别对两组人群使用配对 t 检验比较 HR1和 HR2，结果显示，COPD 组的 HR1和 HR2无显著性差异（ t =-1.523，P =0.139），健康人组的 HR1和 HR2无显著性差异（ t =-1.427，P =0.167）。COPD 组的 HR1和 HR2相关性比较，呈显著相关（ r =0.932）；健康人组的 HR1和 HR2相关性比较，呈显著相关（ r =0.944）。结论 CS 与 COPD 患者的心率有良好的相关性，可用作运动过程中自行评估运动强度的指标，指导康复及锻炼。