Comparison of measured sleeping metabolic rate and predicted basal metabolic rate during the first year of life: evidence of a bias changing with increasing metabolic rate
| Autor: | Peter Davies, Ross W. Shepherd, Geoffrey J. Cleghorn, O. Trocki, C. A. Reichman |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Male
Aging Medicine (miscellaneous) First year of life Biology Animal science Predictive Value of Tests Humans Resting energy expenditure Clinical care Nutrition and Dietetics Limits of agreement Body Weight Age Factors Infant Calorimetry Indirect Predictive value Body Height Predictive value of tests Basal metabolic rate Metabolic rate Body Constitution Female Basal Metabolism Energy Metabolism Sleep |
| Zdroj: | European journal of clinical nutrition. 56(7) |
| ISSN: | 0954-3007 |
| Popis: | Objective: To compare measurements of sleeping metabolic rate (SMR) in infancy with predicted basal metabolic rate (BMR) estimated by the equations of Schofield. Methods: Some 104 serial measurements of SMR by indirect calorimetry were performed in 43 healthy infants at 1.5, 3, 6, 9 and 12 months of age. Predicted BMR was calculated using the weight only (BMR-wo) and weight and height (BMR-wh) equations of Schofield for 0-3-y-olds. Measured SMR values were compared with both predictive values by means of the Bland-Altman statistical test. Results: The mean measured SMR was 1.48 MJ/day. The mean predicted BMR values were 1.66 and 1.47 MJ/day for the weight only and weight and height equations, respectively. The Bland-Altman analysis showed that BMR-wo equation on average overestimated SMR by 0.18 MJ/day (11%) and the BMR-wh equation underestimated SMR by 0.01 MJ/day (1%). However the 95% limits of agreement were wide: - 0.64 to - 0.28MJ/day (28%) for the former equation and - 0.39 to +0.41 MJ/day (27%) for the latter equation. Moreover there was a significant correlation between the mean of the measured and predicted metabolic rate and the difference between them. Conclusions: The wide variation seen in the difference between measured and predicted metabolic rate and the bias probably with age indicates there is a need to measure actual metabolic rate for individual clinical care in this age group. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|