Do Combined breathing techniques increase lung function (or Exercise Tolerance) in Patients with COPD?

1. Write a brief background to justify the case you have chosen.
2. Write a clinical question based on the PICO framework: what is the clinical question that will allow for the investigation of the issue?
3. Write a literature search strategy to locate 1 Systematic review paper
4. Appraise the SR, and extract the evidence, Please use the template provided for formative

Do Combined breathing techniques increase lung function (or Exercise Tolerance) in Patients with COPD?

This is the clinical question