Evaluation of a portable device to measure daily energy expenditure in free-living adults  

Oleh:

St-Onge, Maxime ; Mignault, Diane ; Allison, David B. ; Rabasa-Lhoret, Remi

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Clinical Nutrition vol. 85 no. 03 (Mar. 2007), page 742.
Topik: Energy expenditure • physical activity • doubly labeled water • portable armband

Ketersediaan

Perpustakaan FK Nomor Panggil: A07.K.2007.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

1 From the Metabolic Dysfunction Laboratory, Nutrition Department, University of Montreal, Montreal, Canada (MS-O, DM, and RR-L), and the Department of Biostatistics, Section on Statistical Genetics and Clinical Nutrition Research Center, University of Alabama at Birmingham, Birmingham, AL (DBA) Background:Increasing daily energy expenditure (EE) plays an important role in the prevention or treatment of several lifestyle-related diseases; however, its measurement remains problematic. Objective:The objective was to evaluate a portable armband device for measuring daily and physical activity EE compared with doubly labeled water (DLW) in free-living individuals. Design:Daily EE and physical activity EE were measured in 45 subjects over a 10-d period simultaneously with 2 techniques: a portable armband and DLW. Resting metabolic rate was measured by indirect calorimetry, and the thermic effect of a meal was estimated (10% of daily EE). Physical activity EE was obtained by subtracting the values for resting metabolic rate and thermic effect of a meal measured with DLW from those measured with the armband. Body composition was measured with dual-energy X-ray absorptiometry. Concordance between measures was evaluated by intraclass correlation, SEE, regression analysis, and Bland-Altman plots. Results:Mean estimated daily EE measured with the armband was 117 kcal/d lower (2375 ± 366 kcal/d) than that measured with DLW (2492 ± 444 kcal/d; P < 0.01). Despite this group difference, individual comparisons between the armband and DLW were close, as evidenced by an intraclass correlation of 0.81 (P < 0.01). Conclusions:The portable armband shows reasonable concordance with DLW for measuring daily EE in free-living adults. The armband may there be useful to estimate daily EE.

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