The acute effects of a rollator in individuals with COPD.
OBJECTIVE
To investigate whether the acute benefits of rollator use are consistent over time in individuals with moderate to severe chronic obstructive pulmonary disease.


METHODS
Thirty-one stable subjects with chronic obstructive pulmonary disease (13 men, 18 women), aged 68 +/- 8 years, with a forced expiratory volume in 1 second of 0.7 +/- 0.2 L (33% +/- 12% predicted) and a baseline 6-minute walk (6MW) of 261 +/- 68 m, were recruited from a respiratory clinic after completion of a pulmonary rehabilitation program. Two 6MWs were performed at baseline, 4 weeks, and 8 weeks, one walking unaided and the other walking with the assistance of a rollator. The test order was randomly chosen at baseline, and the same test order was used at each time point. The primary outcome measures were distance walked in 6 minutes (meters), perceived dyspnea using a modified Borg scale, and number of rests taken.


RESULTS
Subjects achieved higher 6MW distances during assisted compared with unassisted walking at baseline (292 +/- 67 vs 263 +/- 67 m), 4 weeks (296 +/- 62 vs 275 +/- 63m), and 8 weeks (283 +/- 65 vs 259 +/- 68 m) (P = .013), with no time effect (P = .5). In addition, use of a rollator resulted in a significant improvement in dyspnea (P = .004) at baseline, 4 weeks, and 8 weeks, with no time effect (P = .7). The use of a rollator also reduced the number of rests taken during the 6MW (P < .001), with no time effect (P = .9).


CONCLUSIONS
Rollator use resulted in improvements in performance in the 6MW, which were consistent over time among individuals with moderate to severe chronic obstructive pulmonary disease who walk less than 375 m during an unaided 6MW.
Graduate Department of Rehabilitation Science, University of Toronto, Ontario, Canada.
Renu
R
Gupta
Roger
R
Goldstein
Dina
D
Brooks
D000368:Aged; D005080:Exercise Test; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology*; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology* / Q000534:rehabilitation*; D012656:Self-Help Devices; D013997:Time Factors; D016896:Treatment Outcome; D016138:Walking