Development of New Predictive Equations to Estimate Basal Metabolic Rates in Iranian Adults: A Study Protocol




چکیده: (872 مشاهده) 
Background and Objectives: Studies indicate overestimation of basal metabolic rate (BMR) using common equations for the Asian people. The present study aims to develop new predictive equations for the Iranian people and to compare these equations with commonly used formulas.
Materials and Methods: Total, 150healthy subjects aged 1860 yrare invited to the Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute. Demographic data are gathered using a questionnaire. Then, anthropometric measures are taken and blood sampling is done for thyroid function tests. If the subject merits all the inclusion criteria, indirect calorimetry will be performed. The value of BMR will be predicted using common equations (HarrisBenedict, FAO/WHO/UNU, Miffilin).
Differences between predicted (using equations) and measured (using indirect calorimetry) values are estimated. Correlations between the two sets of data is performed using Pearson or Spearman coefficients. Betweenmethod agreement is checked using BlandAltmanPlot. Accuracy of the predicted values using equations isconsidered as the proportion of participants whose calculated BMR is 90110% of their measured BMR. Multiple regression analysis is employed to develop new predictive equations for the BMR based on the independent variables.
Conclusions: Since facilities for the measurement of BMR may not be accessible in many clinical or research settings, BMR is usually estimated using predictive equations. However, several studies have reported inaccuracy of these equations for certain populations. Therefore, development of new populationspecific predictive equations seems reasonable. These equations could hopefully reduce the energy estimation errors both in clinical nutritional interventions and communitybased nutrition researches. 



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عمومى دریافت: ۱۳۹۷/۱۰/۲۵  پذیرش: ۱۳۹۸/۵/۱۳  انتشار: ۱۳۹۸/۵/۱۳





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Nikooyeh B, Neyestani T R. Development of New Predictive Equations to Estimate Basal Metabolic Rates in Iranian Adults: A Study Protocol. Nutr Food Sci Res. 2019; 6 (2) :14 URL: http://nfsr.sbmu.ac.ir/article1347fa.html
