Artículos de revistas
Minimum Time To Achieve The Steady State And Optimum Abbreviated Period To Estimate The Resting Energy Expenditure By Indirect Calorimetry In Healthy Young Adults
Registro en:
1941-2452
Nutrition In Clinical Practice. SAGE PUBLICATIONS INC, n. 31, n. 3, p. 349 - 354.
0884-5336
WOS:000376294200009
10.1177/0884533615627268
Autor
Borges
JH; Langer
RD; Cirolini
VX; Pascoa
MA; Guerra
G; Goncalves
EM
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) The optimum abbreviated period for measurement by indirect calorimetry (IC) to estimate the resting energy expenditure (REE), including the acclimation period, in healthy individuals has not been established. This study aimed to determine the acclimation time required to achieve the REE steady state during a 30-minute IC measurement and to define the optimum abbreviated measurement period in the steady state to estimate the REE in healthy young adults. Methods: Thirty-nine volunteers (27 men and 12 women; age, 18-31 years) were recruited. The REE was obtained by IC over 30 minutes. Friedman's test was used to compare the coefficient of variation (CV%) among all 5-minute intervals (REE5). To compare the REE values obtained during the first REE5 interval in the steady state with the REE average values of the subsequent measurements, Student paired t test, linear regression, and Bland-Altman test were used. Results: The CV% of the first REE5 (mean +/- standard deviation: 19.9% +/- 13.2%) was significantly higher (P < .0001) than that of all other REE5 (second REE5: 7.4% +/- 3.8%; third: 7.8% +/- 5.2%; fourth: 7.1% +/- 3.9%; fifth: 8.0% +/- 5.7%; sixth: 8.0% +/- 4.5%). No significant difference was found between the second REE5 and the REE average values of the last 20 minutes. The second REE5 explained 90% of the REE average of the last 20 minutes, with the 95% limits of agreement by the Bland-Altman test ranging from -142.92 to 150.44 kcal/d. Conclusion: Ten minutes can be used as an abbreviated alternative for IC measurements in healthy young adults, and values of the first 5-minute interval should be discarded. 31
349 354 Coordination for the Improvement of Higher Education Personnel (CAPES) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)