Table 3.
Search Methods and Results
| Databases: | CINAHL, PubMed, Medline via First Search, ProQuest Health |
| Search Terms: | “inspiratory muscle training,” “respiratory muscle training,” “ventilatory muscle training,” “breathing exercise,” “resistive breathing” |
| Number of Articles Found: | 691 |
| Number of Articles Meeting Inclusion Criteria: | 15 |
| Excluded Articles: | |
| Reason | Number of Articles |
| Diagnosis other than COPD | 562 |
| IMT performed in combination with other interventions | 18 |
| Intensity Not Specified or Not Controlled | 15 |
| Non-English Language | 5 |
| Other: expiratory muscle training, no IMT, other review articles, no control group | 69 |
COPD = chronic obstructive pulmonary disease, IMT = inspiratory muscle training