scholarly journals Basal Metabolic Rate of Adolescent Modern Pentathlon Athletes: Agreement between Indirect Calorimetry and Predictive Equations and the Correlation with Body Parameters

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0142859 ◽  
Author(s):  
Luiz Lannes Loureiro ◽  
Sidnei Fonseca ◽  
Natalia Gomes Casanova de Oliveira e Castro ◽  
Renata Baratta dos Passos ◽  
Cristiana Pedrosa Melo Porto ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Indirect Calorimetry ◽  
Predictive Equations ◽  
Body Parameters

Development of new predictive equations for basal metabolic rate in Iranian healthy adults: negligible effect of sex

2020 ◽  
pp. 1-10
Author(s):  
Bahareh Nikooyeh ◽  
Nastaran Shariatzadeh ◽  
Ali Kalayi ◽  
Maliheh Zahedirad ◽  
Tirang R. Neyestani
Keyword(s):  
Metabolic Rate ◽  
Thyroid Function ◽  
Basal Metabolic Rate ◽  
Age Groups ◽  
Thyroid Function Tests ◽  
Anthropometric Measures ◽  
Predictive Equations ◽  
Normal Thyroid Function ◽  
Asian People ◽  
Predictive Formulas

Abstract. Some studies have reported inaccuracy of predicting basal metabolic rate (BMR) by using common equations for Asian people. Thus, this study was undertaken to develop new predictive equations for the Iranian community and also to compare their accuracy with the commonly used formulas. Anthropometric measures and thyroid function were evaluated for 267 healthy subjects (18–60 y). Indirect calorimetry (InCal) was performed only for those participants with normal thyroid function tests (n = 252). Comparison of predicted RMR (both kcal/d and kcal.kg.wt−1.d−1) using current predictive formulas and measured RMR revealed that Harris-Benedict and FAO/WHO/UNU significantly over-estimated and Mifflin-St. Jeor significantly under-estimated RMR as compared to InCal measurements. In stepwise regression analysis for developing new equations, the highest r2 (=0.89) was from a model comprising sex, height and weight. However, further analyses revealed that unlike the subjects under 30 y, the association between age and the measured RMR in subjects 30 y and plus was negative (r = −0.241, p = 0.001). As a result, two separate equations were developed for these two age groups. Over 80 percent of variations were covered by the new equations. In conclusion, there were statistical significant under- and over-estimation of RMR using common predictive equations in our subjects. Using the new equations, the accuracy of the calculated RMR increased remarkably.

scholarly journals Measured and Predicted Basal Metabolic Rate in Inflammatory Bowel Disease Patients

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 624-624
Author(s):  
Luiz Dos Anjos ◽  
Tatiana Campos ◽  
Juliana Dantas ◽  
Fernanda Fernandes ◽  
Vivian Wahrlich
Keyword(s):  
Inflammatory Bowel Disease ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Bowel Disease ◽  
Anthropometric Measures ◽  
Predictive Equations ◽  
Women Subjects ◽  
Funding Sources ◽  
Chron's Disease ◽  
Inflammatory Bowel

Abstract Objectives To measure basal metabolic rate (BMR) and to compare the values with estimated BMR from international and local predictive equations in inflammatory bowel disease (IBD) patients. Methods A total of 72 (38 women) subjects with Chron's disease (n = 45, 19 women) and ulcerative colitis (n = 27, 19 women) from an outpatient care unit in Rio de Janeiro, Brazil, agreed to participate in the study. Anthropometric measures were obtained using standard procedures. Percent body fat (PBF) was assessed by DXA. BMR was measured (BMRm) by indirect calorimetry (Vmax Encore 29) under standardized conditions and compared with BMR estimated by internationally-recommended (Schofield, 1985) and locally-developed (Anjos et al., 2014) predictive equations. Bias was calculated as estimated - measured BMR. Results The mean ± SD (range) age was 38.0 ± 11.3 (20.1 – 58.3) years with a mean BMI of 24.7 ± 4.5 (16.1 – 39.1) kg.m−2 and PBF of 32.2 ± 9.1 (9.7 – 53.4). BMRm was significantly lower in women (1169.3 ± 205.0) than men (1439.0 ± 197.5) kcal.day−1. The Schofield's equations significantly overestimated BMR for both women (bias of 204.0 ± 148.3 kcal.day−1 or 17.4%) and men (306.7 ± 171.0 kcal.day−1 or 21.3%). The locally-developed equation yielded nonsignificant estimates for both women (−5.8 ± 143.7 kcal.day−1 or −0.5%) and men (−19.9 ± 165.5 kcal.day−1 or −1.4%). Conclusions The findings of the present study indicate that internationally-recommended BMR predictive equations are not accurate to estimate BMR in IBD patients in a tropical setting. As observed in samples of healthy adults from the same city, the locally-developed BMR equations yield unbiased and accurate estimates for IBD patients. Funding Sources CNPq (310,461/2016–20) and FAPERJ (E-26/202.514/2018; E-26/203.068/2018; E-26/203.068/2017; E-26/202.520/2016; E-26/210.747/2016).

scholarly journals Comparison between resting metabolic rate and indirect calorimetry in postmenopausal women

2017 ◽  
Vol 30 (5) ◽  
pp. 583-591 ◽  
Author(s):  
Randhall Bruce CARTERI ◽  
Marceli FELDMANN ◽  
Júlia Silveira GROSS ◽  
Renata Lopes KRUGER ◽  
André Luis LOPES ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Postmenopausal Women ◽  
Indirect Calorimetry ◽  
Resting Metabolic Rate ◽  
Estimation Methods ◽  
Accurate Estimation ◽  
Institute Of Medicine ◽  
Predictive Equations ◽  
Overweight Group ◽  
Overnight Fasting

ABSTRACT Objective To compare resting metabolic rate values determined by indirect calorimetry with values estimated using different predictive equations in lean and overweight postmenopausal women. Methods Twenty-four women, who had stopped menstruating for at least two years, were subjected to anthropometric measurements and indirect calorimetry after 12-hour overnight fasting to determine, mathematically and experimentally, resting metabolic rate values. Results There was no difference in the indirect calorimetry values between the groups evaluated. Difference values of resting metabolic rate were obtained with all equations used. For the lean women, there was no difference between the values obtained by indirect calorimetry and those estimated using the equations proposed by Food and Agricultural Organization, Fredix, Lazzer, and Schofield. However, in the overweight group, the resting metabolic rate values estimated using the Institute of Medicine, Berstein and Owen equations were different from those obtained by indirect calorimetry. Conclusion This study suggests that differences in body composition in postmenopausal women influence the accuracy of predictive equations, demonstrating the need for more accurate estimation methods for resting metabolic rate in postmenopausal women with different body compositions.

Accuracy of Indirect Calorimetry and Predictive Equations for the Measurement of Resting Metabolic Rate

2017 ◽  
Vol 49 (5S) ◽  
pp. 579
Author(s):  
Lucas K. Shrum ◽  
Karl G. Keczkemethy ◽  
Jeremy T. Barnes ◽  
Thomas J. Pujol ◽  
Jason D. Wagganer
Keyword(s):  
Metabolic Rate ◽  
Indirect Calorimetry ◽  
Resting Metabolic Rate ◽  
Predictive Equations

scholarly journals Αξιολόγηση εγκυρότητας προγνωστικών εξισώσεων εκτίμησης ενεργειακών αναγκών και συσχέτιση με τη σύνθεση σώματος, σε δείγμα ελληνικού πληθυσμού

2019 ◽  
Author(s):  
Ελένη Παυλίδου
Keyword(s):  
Body Mass Index ◽  
Metabolic Rate ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Indirect Calorimetry

Εισαγωγή: Οι εξισώσεις πρόβλεψης που χρησιμοποιούνται για την εκτίμηση των ενεργειακών απαιτήσεων μπορεί να αποδώσουν διαφορετικές τιμές βασικού μεταβολικού ρυθμού (Basal Metabolic Rate (BMR)) από αυτές που μετρώνται με έμμεση θερμιδομετρία (Indirect Calorimetry (IC)), καθιστώντας αναγκαία και ιδιαίτερα σημαντική την αξιολόγηση της αξιοπιστίας και της ακρίβειάς τους. Σκοπός: Η αξιολόγηση της συμφωνίας, μεταξύ των υπολογιζόμενων τιμών BMR (BMR (estimated ΒMR (BMRe)) με τη χρήση εξισώσεων και των μετρούμενων τιμών BMR (measurement BMR (ΒMRm)) με IC, καθώς και η διερεύνηση των παραγόντων που επηρεάζουν τη συμφωνία αυτή. Μέθοδος: Σε 383 συμμετέχοντες (105 άντρες και 278 γυναίκες), καυκάσιας φυλής, όλων των κατηγοριών Δείκτη Μάζας Σώματος (Body Mass Index (BMI)), καταγράφηκαν τα σωματομετρικά χαρακτηριστικά και μετρήθηκε o ΒMR με φορητή συσκευή IC Fitmate. Οι τιμές ΒMRm συγκρίθηκαν με τις τιμές ΒMRe των εξισώσεων Harris & Benedict, Roza & Shizgal, Schofield, Owen, FAO-WHO-UNU, Mifflin, HB Abbreviated και Harrington. Αποτελέσματα: Μεγαλύτερη προσέγγιση τιμών, προέκυψε από την εξίσωση Harrington (βασιζόμενη στο BMI, την ηλικία και το φύλο). Επίσης, οι εξισώσεις που χρησιμοποιούν παραμέτρους βάρους, ύψους, ηλικίας και φύλου παρουσίασαν μεγαλύτερη συμφωνία με τις μετρήσεις με IC, από τις εξισώσεις που χρησιμοποιούν ως αποκλειστικές παραμέτρους το βάρος και το φύλο. Το υψηλότερο μορφωτικό επίπεδο σχετίστηκε με φυσιολογικό BMI. Παρατηρήθηκε επίσης μια αντιστρόφως ανάλογη σχέση μεταξύ BMI και ΒMR και δημιουργήθηκε μία λογαριθμική εξίσωση υπολογισμού του ΒMR διαφοροποιούμενη ως προς τις κατηγορίες BMI με την ενσωμάτωση των μεταβλητών βάρους και φύλου. Συμπεράσματα: Μια καλύτερη συμφωνία μεταξύ των τιμών BMRe και BMRm μπορεί να επιτευχθεί μέσω της χρήσης του ΒΜΙ στις εξισώσεις πρόβλεψης. Η ηλικιακή ομάδα και οι μεταβλητές φύλου μπορούν επίσης να ασκήσουν σημαντικό ρόλο στην απόκριση μεροληψίας ορισμένων εξισώσεων BMR. Τα παρόντα ευρήματα συνέβαλαν στην καλύτερη κατανόηση των μετρούμενων παραμέτρων και επιβεβαίωσαν την αντίστροφη σχέση μεταξύ BMI και BMR καθώς και τη σχέση ανώτερου εκπαιδευτικού επιπέδου και φυσιολογικού ΒΜΙ.

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