This is a multi-center prospective follow-up study.More than 20 hospitals participate the research. More than 300 stable COPD patients will be recruited.It is a two-year study. There are four groups, cycling and walking group(C-WG),cycling and non-walking group(C-nonWG),walking and walking group(W-WG),walking and non-walking group(W-nonWG).
- All patients from four groups will finish baseline investigation and blood sample, including informed consent,questionaires(SGRQ,CRDQ,MRCQ,Depression Scale,etc.),spirometry,6MWT,MIP,MEP,BMI,CRP,TNF,IL-8, etc.Patients in C-WG and C-nonWG will finish cardiopulmonary test.
- Patients receive 8 weeks training program, includes upper and lower extremities endurance exercises and respiratory muscle endurance exercises. Patients in both CGs cycling at cycle ergometry. Patients in W-WG and W-nonWG walking instead. All patients receive training program twice per year, for two years. Patients were supervised by physicians or nurses at hospital while they are training.
- In the non-training period, patients in W-WG and C-WG will continue to walk at community, supervised by nurses who call them every month. The other two groups(C-nonWG and W-nonWG) do not receive special requirement on exercise.
- Telephone call interview will give to patients every month to find whether they have acute exacerbation. Patients are asked to record their activities during daytime in the diary cards.
- All patients will finish investigation and blood sample after one year and two year,including questionaires,spirometry,6MWT,MIP,MEP,BMI,CRP,TNF,IL-8, etc.Patients in CG will finish cardiopulmonary test.