Rollator Use Does Not Consistently Change the Metabolic Cost of Walking in People With Chronic Obstructive Pulmonary Disease

OBJECTIVES: To (1) evaluate whether the use of a rollator changed metabolic cost during a controlled walking task, and (2) explore relationships between the difference in dyspnea and metabolic cost associated with rollator use. DESIGN: Single-group interventional study in which patients completed 2 corridor walks: 1 without and 1 with a rollator, at the same individualized constant speed.