Document Detail

Accuracy and responsiveness of the stepwatch activity monitor and ActivPAL in patients with COPD when walking with and without a rollator.
MedLine Citation:
PMID:  22200080     Owner:  NLM     Status:  Publisher    
Purpose: To evaluate the measurement properties of the StepWatch(™) Activity Monitor (SAM) and ActivPAL in COPD. Method: Whilst wearing both monitors, participants performed walking tasks at two self-selected speeds, with and without a rollator. Steps obtained using the monitors were compared with that measured by direct observation. Results: Twenty participants aged 73 ± 9 years (FEV(1) = 35 ± 13% pred; 8 males) completed the study. Average speeds for the slow and normal walking tasks were 34 ± 7 m·min(-1)and 46 ± 10 m·min(-1), respectively. Agreement between steps recorded by the SAM with steps counted was similar irrespective of speed or rollator use (p = 0.63) with a mean difference and limit of agreement (LOA) of 2 steps·min(-1) and 6 steps·min(-1), respectively. Agreement for the ActivPAL was worse at slow speeds (mean difference 7 steps·min(-1); LOA 10 steps·min(-1)) compared with normal speeds (mean difference 4 steps·min(-1); LOA 5 steps·min(-1)) (p = 0.03), but was unaffected by rollator use. The change in step rate between slow and normal walking via direct observation was 12 ± 7 steps·min(-1) which was similar to that detected by the SAM (12 ± 6 steps·min(-1)) and ActivPAL (14 ± 7 steps·min(-1)). Conclusions: The SAM can be used to detect steps in people who walk very slowly including those who use a rollator. Both devices were sensitive to small changes. [Box: see text].
Li Whye Cindy Ng; Sue Jenkins; Kylie Hill
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-26
Journal Detail:
Title:  Disability and rehabilitation     Volume:  -     ISSN:  1464-5165     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9207179     Medline TA:  Disabil Rehabil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
School of Physiotherapy and Curtin Health Innovation Research Institute, Curtin University , Perth , Western Australia.
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