Document Detail

Prediction of energy expenditure from wrist accelerometry in people with and without down syndrome.
MedLine Citation:
PMID:  22467836     Owner:  NLM     Status:  In-Data-Review    
This study examined the relationship between energy expenditure and wrist accelerometer output during walking in persons with and without Down syndrome (DS). Energy expenditure in metabolic equivalent units (METs) and activity-count rate were respectively measured with portable spirometry and a uniaxial wrist accelerometer in 17 persons with DS (age: 24.7 ± 6.9 years; 9 women) and 21 persons without DS (age: 26.3 ± 5.2 years; 12 women) during six over-ground walking trials. Combined groups regression showed that the relationship between METs and activity-count rate differed between groups (p < .001). Separate models for each group included activity-count rate and squared activity-count rate as significant predictors of METs (p ≤ .005). Prediction of METs appeared accurate based on Bland-Altman plots and the lack of between-group difference in mean absolute prediction error (DS: 17.07%; Non-DS: 18.74%). Although persons with DS show altered METs to activity-count rate relationship during walking, prediction of their energy expenditure from wrist accelerometry appears feasible.
Stamatis Agiovlasitis; Robert W Motl; John T Foley; Bo Fernhall
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Adapted physical activity quarterly : APAQ     Volume:  29     ISSN:  1543-2777     ISO Abbreviation:  Adapt Phys Activ Q     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-04-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8701671     Medline TA:  Adapt Phys Activ Q     Country:  United States    
Other Details:
Languages:  eng     Pagination:  179-90     Citation Subset:  IM    
Department of Kinesiology at Mississippi State University, Mississippi State, MS.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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