. 2019 Jun 8;20:336. doi: 10.1186/s13063-019-3440-2

Table 1.

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
1. Chronic obstructive pulmonary disease + chronic respiratory failure 2. Long-term oxygen therapy 3. Clinical stability (7.35 < pH < 7.46)	1. Orthopaedic or neurological disease 2. Cognitive impairment (MMSE < 22) 3. Anamnestic history of ischemic heart disease or chronic heart failure 4. Pulmonary fibrosis

Inclusion criteria

Exclusion criteria

1. Chronic obstructive pulmonary disease + chronic respiratory failure

2. Long-term oxygen therapy

3. Clinical stability (7.35 < pH < 7.46)

1. Orthopaedic or neurological disease

2. Cognitive impairment (MMSE < 22)

3. Anamnestic history of ischemic heart disease or chronic heart failure

4. Pulmonary fibrosis

MMSE Mini-Mental State Examination