Indications for 6-min and shuttle walking tests in clinical practice
| Indication | Recommendation grade |
| Diagnosis of exercise-induced arterial desaturation | B |
| Functional evaluation of patients with COPD, ILD, PPH, and CHF | B |
| Prognostic evaluation of patients with COPD, ILD, PPH and CHF | B |
| Functional evaluation of patients with CF | C |
| Prognostic evaluation of patients with COPD or CHF prior to surgery (LVRS, transplantation) | C |
| Evaluation of the benefits of therapeutic interventions (oxygen supplementation, rehabilitation, surgery) | B |
With the use of this grading system, A is relatively rare and B is usually considered the best achievable. COPD: chronic obstructive pulmonary disease; ILD: interstitial lung disease; PPH: primary pulmonary hypertension; CHF: chronic heart failure; CF: cystic fibrosis; LVRS: lung-volume reduction surgery.