TABLE 1.

Search criteria for computerised literature search conducted in PubMed

Search	Query
1	(“Chronic obstructive pulmonary disease” [Text Word] OR “COPD” [Text Word] OR “Chronic Lung Disease” [Text Word] OR “Chronic Obstructive Lung Disease” [Text Word] OR “Emphysema” [Text Word] OR “Chronic Bronchitis” [Text Word])
2	(“exercise” [Text Word] OR “rehabilitation” [Text Word] OR “exercise training” [Text Word] OR “pulmonary exercise training” [Text Word] OR “physical exercise training” [Text Word] OR “pulmonary rehabilitation” [Text Word] OR “exercise rehabilitation” [Text Word] OR “cardiopulmonary rehabilitation” [Text Word] OR “rehabilitation program#” [Text Word] OR “exercise program#” [Text Word] OR “physical activity advice” [Text Word] OR “physical activity counselling” [Text Word] OR “physical activity promotion” [Text Word] OR “accelerometer#” [Text Word] OR “Pedometer#” [Text Word] OR “activity monitor#” [Text Word] OR “step count#” [Text Word] OR [Text Word] OR “telerehabilitation” [Text Word] OR “e-Health intervention” [Text Word])
3	(“Activity” [Text Word] OR “Motor activity” [Text Word] OR “physical inactivity” [Text Word] OR “risk factor” [Text Word] OR “outcome assessment” [Text Word] OR “activity” [Text Word] OR “step#” [Text Word] OR “walk#” [Text Word])
4	(Randomised controlled trial OR clinical trial OR experimental study)
5	1 AND 2 AND 3 AND 4

Text word includes all words and numbers in the title, abstract, other abstract, MeSH terms, MeSH subheadings, publication types, substance names, personal name as subject, corporate author, secondary source, comment/correction notes. ^#: all terms that begin with specific word.