PMID- 22946639
OWN - NLM
STAT- MEDLINE
DCOM- 20130327
LR  - 20121003
IS  - 1541-2563 (Electronic)
IS  - 1541-2563 (Linking)
VI  - 9
IP  - 5
DP  - 2012 Aug
TI  - Comparison of recording positions of physical activity in patients with severe 
      COPD undergoing LTOT.
PG  - 528-37
LID - 10.3109/15412555.2012.708066 [doi]
AB  - BACKGROUND: Accelerometry is increasingly used to assess physical activity (PA) 
      in patients with chronic obstructive pulmonary disease (COPD). It is not known 
      how the relationship of PA to clinical results depends on the position of the PA 
      sensor. METHODS: We assessed the effect of monitor position by measuring lower 
      extremity (ankle), upper extremity (wrist) and total body movement (hip) in 52 
      patients with severe COPD (mean [+/- SD] age, 62 +/- 10 years; FEV(1), 38 +/- 12% 
      predicted) undergoing long-term oxygen therapy with and without walkers during a 
      pulmonary rehabilitation (PR) program. Sensors were worn 8.5 +/- 3.1 days and data 
      was compared to the BODE score and the 6-minute walk distance (6MWD) assessed at 
      the beginning and end of the PR. RESULTS: Mean ankle PA was moderately related to 
      the 6MWD, irrespective of patients being equipped with a walker or not (p < 
      0.05). Mean PA values were considerably lower in COPD patients with walker 
      compared to patients without for all sensor positions. No significant association 
      was observed between mean hip PA data and 6MWD; however, hip and ankle PA data 
      were moderately related in walker-free and strongly related in walker patients (p 
      < 0.01). In a multivariate regression model only ankle activity was significantly 
      associated with the BODE score (p < 0.01). CONCLUSION: The sensor position had a 
      significant impact on the association between PA recordings and the 6MWD in very 
      severe COPD. In our setting, ankle measurement seemed to best reflect the 
      clinical state of patients.
FAU - Gorzelniak, Lukas
AU  - Gorzelniak L
AD  - Technische Universitat Munchen, Institute for Medical Statistics and 
      Epidemiology, Munich, Germany.
FAU - Dias, Andre
AU  - Dias A
FAU - Schultz, Konrad
AU  - Schultz K
FAU - Wittmann, Michael
AU  - Wittmann M
FAU - Karrasch, Stefan
AU  - Karrasch S
FAU - Jorres, Rudolf A
AU  - Jorres RA
FAU - Horsch, Alexander
AU  - Horsch A
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120904
PL  - England
TA  - COPD
JT  - COPD
JID - 101211769
SB  - IM
MH  - *Accelerometry/instrumentation/methods
MH  - Aged
MH  - Exercise Tolerance
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - *Movement
MH  - Oxygen Inhalation Therapy
MH  - Pulmonary Disease, Chronic Obstructive/*physiopathology/therapy
MH  - Regression Analysis
MH  - Walkers
MH  - Walking
EDAT- 2012/09/06 06:00
MHDA- 2013/03/28 06:00
CRDT- 2012/09/06 06:00
PHST- 2012/09/06 06:00 [entrez]
PHST- 2012/09/06 06:00 [pubmed]
PHST- 2013/03/28 06:00 [medline]
AID - 10.3109/15412555.2012.708066 [doi]
PST - ppublish
SO  - COPD. 2012 Aug;9(5):528-37. doi: 10.3109/15412555.2012.708066. Epub 2012 Sep 4.