During the containment of COVID-19, the traditional face-to-face interventions conducted at the rehabilitation center were plagued by many limitations, while internet-based interventions can overcome the limitations of geographic location, working hours and transportation, with less medical costs.

To examine the effects of internet-based interventions on knowledge, attitude/belief and practice (KAP) toward rehabilitation exercises, physical activity (PA) level, and exercise compliance inpatients after PCI.

The subjects were 76 patients who received their first PCI in Department of Cardiology, Tangshan Gongren Hospital from November 2021 to June 2022. They were randomly and equally divided into two groups to receive either internet-based intervention with routine nursing (experimental group) or routine nursing (control group) . Before and three months after the intervention, the Rehabilitation Exercise Knowledge-Belief-Practice Scale for Patients with Coronary Heart Disease (REKBPCHD) , the International Physical Activity Questionnaire-Short Form (IPAQ-SF) , and Patients' Exercise Log were used to assess the KAP level, PA level, and exercise adherence, respectively. The impact of network intervention on exercise adherence in patients after PCI by univariate Logistic regression analysis.

After 3 months of intervention, a significant increase was found in the average total score of REKBPCHD, and the average scores of the knowledge dimension, attitude dimension and practice dimension of the scale in the experimental group (P<0.05) , and the increase was more notable than that in the control group (P<0.05) . Moreover, both post-intervention low PA level and total PA level in the experimental group were higher than those in the control group (P<0.05) . Both post-intervention low PA level and total PA level were higher than the baseline levels in the experimental group (P<0.05) . The post-intervention exercise compliance of experimental group were higher than that in the control group (P=0.003) . Univariate Logistic regression analysis showed that the risk of non-adherence to exercise in the experimental group was relatively lower than that in the control group〔OR=0.143, 95%CI (0.034, 0.594) , P=0.007〕.

Theinternet-based intervention can effectively improve the KAP level toward rehabilitation, PA level, and exercise adherence in patients after PCI.

在新型冠状病毒感染防控期间，康复中心传统面对面的干预受到诸多限制，网络干预克服了地理位置、工作时间和交通等限制，更能节省医疗费用。

探讨网络干预对经皮冠状动脉介入治疗（PCI）术后患者运动康复知信行、体力活动水平和运动依从性的影响。

选择2021年11月—2022年6月在唐山市工人医院心血管内科首次接受PCI的76例患者作为研究对象。将患者随机分为对照组和试验组，各38例。试验组在常规护理的基础上接受网络干预，对照组接受常规护理。干预前及干预3个月后，采用冠心病患者康复运动知信行调查问卷、国际体力活动短问卷和依据患者运动日志对患者运动康复知信行水平、体力活动水平和运动依从性进行评估；采用单因素Logistic回归分析探究网络干预对PCI术后患者运动依从性的影响。

干预3个月后，试验组知识维度、态度维度、行为维度和总分均高于对照组（P<0.05）；试验组干预3个月后知识维度、态度维度、行为维度和总分均高于干预前（P<0.05）。干预3个月后，试验组低体力活动水平和总体力活动水平均高于对照组（P<0.05）；试验组干预3个月后低体力活动水平和总体力活动水平均高于干预前（P<0.05）。干预3个月后，试验组运动依从性高于对照组（P=0.003）；经单因素Logistic回归分析显示，与对照组相比，试验组运动不依从的风险相对较低〔OR=0.143，95%CI（0.034，0.594），P=0.007〕。

基于网络干预能有效提高PCI术后患者运动康复知信行水平、体力活动水平和运动依从性。