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Pedometer step count targets during pulmonary rehabilitation in COPD: a randomized controlled trial

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Title: Pedometer step count targets during pulmonary rehabilitation in COPD: a randomized controlled trial
Authors: Nolan, CM
Maddocks, M
Canavan, JL
Jones, SE
Delogu, V
Kaliaraju, D
Banya, W
Kon, SS
Polkey, MI
Man, WD
Item Type: Journal Article
Abstract: RATIONALE: Increasing physical activity is a key therapeutic aim in COPD. Pulmonary rehabilitation (PR) improves exercise capacity, but there is conflicting evidence regarding its ability to improve physical activity levels. OBJECTIVE: To determine whether using pedometers as an adjunct to PR can enhance time spent in at least moderate intensity physical activity (time ≥ 3METs) in people with COPD. METHODS: In this single-blinded randomized controlled trial, participants were assigned 1:1 to receive control (PR comprising 8 weeks, two supervised sessions/week) or intervention (PR plus pedometer-directed step targets, reviewed weekly for 8 weeks). The randomisation process used minimisation to balance groups for age, sex, FEV1 % predicted, and baseline exercise capacity and physical activity levels. Outcome assessors and PR therapists were blinded to group allocation. The primary analysis was by intention-to-treat and the trial registered with clinicaltrials.gov (Ref. NCT01719822). MEASUREMENTS: The primary outcome was change from baseline to 8 weeks in accelerometer-measured daily time ≥3METs. MAIN RESULTS: 152 participants (72% male; mean (SD) FEV1 % predicted 50.5 (21.2); median (Q1, Q3) time ≥3METS 46 (21, 92) minutes) were enrolled to intervention (n=76) or control (n=76). There was no significant difference in change in time ≥3METs between the intervention and control groups at 8 weeks (median (Q1, Q3) difference 0.5 (-1.0, 31.0) minutes; p=0.87) or at the 6 month follow-up (7.0 (-9, 27) minutes; p=0.16). CONCLUSION: Pedometer-directed step count targets during an outpatient PR program did not enhance moderate intensity physical activity levels in people with COPD. Clinical trial registration available at www.clinicaltrials.gov, ID NCT01719822.
Issue Date: 2-Dec-2016
Date of Acceptance: 1-Dec-2016
URI: http://hdl.handle.net/10044/1/43134
DOI: https://dx.doi.org/10.1164/rccm.201607-1372OC
ISSN: 1535-4970
Publisher: American Thoracic Society
Start Page: 1344
End Page: 1352
Journal / Book Title: American Journal of Respiratory and Critical Care Medicine
Volume: 195
Issue: 10
Copyright Statement: © 2016 American Thoracic Society
Keywords: Science & Technology
Life Sciences & Biomedicine
Critical Care Medicine
Respiratory System
General & Internal Medicine
chronic obstructive pulmonary disease
physical activity
11 Medical And Health Sciences
Publication Status: Published
Conference Place: United States
Appears in Collections:National Heart and Lung Institute