Xu 2017.

Study characteristics
Methods	Study design: single‐centre RCT Country: China Dates participants recruited: January 2014 ‐ September 2015 Maximum follow‐up: 6 months
Participants	Inclusion criteria: 1) Meet the diagnostic criteria of the coronary heart disease, referring to the 13th edition of the Practice Internal Medicine (a Chinese medical textbook) 2) From 39 to 70 years old 3) Participants who are easy to communicate with 4) Long‐term resident in the local area and completed the informed consent 5) Hemodynamics were stable after PCI Exclusion criteria: 1) People with serious arrhythmia (such as atrioventricular block, atrial fibrillation, ventricular tachycardia, etc.), myocarditis, cardiomyopathy, and the installation of a pacemaker 2) People with serious cardiac insufficiency (NYHA class IV), left ventricular ejection fraction < 30% 3) People with severe cerebrovascular diseases (such as cerebral infarction and cerebral haemorrhage) 4) People with serious pulmonary diseases (such as chronic obstructive pulmonary disease, emphysema, pulmonary heart disease, etc.) 5) People with rheumatoid arthritis, osteoarthritis, muscles and other diseases that seriously affect physical activity 6) People with serious organic diseases and abnormal liver and kidney function N randomised: total: 130; intervention: 65; comparator: 65 Diagnosis (% of participants): post‐PCI patients with unstable angina (100%). Age (mean ± SD): intervention: 56.4 ± 8.1; comparator: 58.6 ± 8 Percentage male: intervention: 46 (79%); comparator: 47 (78%) Ethnicity: NR
Interventions	Intervention: There are 2 stages. The first stage is after patients had PCI until they were discharged, the second is from when they were discharged to the third month after PCI. The first stage: 1) The first day after PCI, advise patients to walk for 200 meters per time for 5 times a day. 2) The second day after PCI, advise patients to walk for 300 meters per time for 5 times a day. 3) The third day after PCI, advise patients to walk for 500 meters per time for 5 times a day. They can also go up and down a flight of stairs depending on their own conditions. The second stage: 1) After the patients discharged in the first month after PCI: Walking 30 to 40 mins with the speed of 65‐75 m/min for 3 times a week; or, walking for 10 to 15 mins 3 times a day with a 5‐min break among them for 3 times a week; or, walking for 15 to 20 mins twice a day with a 5‐min break between them for 3 times a week. After each time of walking, guide patients to do some chest enlargement, slow leg lift and upper limb extension exercise, so that the patients’ heart rate, blood pressure can be back to normal levels before walking. 2) 1 to 2 months after PCI: The exercise mode was repeated in alternations of walking and brisk walking. Walk for 90 seconds, followed by brisk walking for 45 s. Repeat above. The walking speed is at 65‐75 m/min, and the brisk walking speed is at 85‐95 m/min. This exercise was 30~40 min each time for 3 times a week. After each time, patients would have relaxation exercise for 10 to 15 mins. 3) 2 to 3 months after PCI: A set of exercise rehabilitation, includes a combination of upper limb and lower limb exercise, combined with resistance training of elastic band and balance training on yoga mat. The whole process can be divided into the pre‐activity stage (8‐10 min), the exercise march stage (30‐40 min) and the recovery stage (10‐15 min). Components: exercise only. Setting: centre‐based Exercise programme modality: Mostly walking, some upper and lower limb exercise, resistance training and balance exercises. Length of session: around 30‐40 mins up to 1 hour (length increases over time). Frequency: 3 times per week (stage 2). Intensity: walking speed 65‐75 m/min up to 85‐95 m/min (brisk walking). Resistance training included? Yes, stage 2 included resistance training with elastic bands. Total duration: 3 months. Co‐interventions: None described Comparator: “All patients received conventional drug therapy and post‐PCI knowledge education” Co‐interventions: none described.
Outcomes	No outcomes reported of relevance, no CONSORT flow diagram
Source of funding	Not reported
Conflicts of interest	Not reported
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	“…used random sampling method to divide patients into intervention and control….”
Allocation concealment (selection bias)	Unclear risk	No details reported
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No details reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Reasons for participants lost to follow‐up not reported
Selective reporting (reporting bias)	Unclear risk	No published protocol available