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.

scholarly journals Control of Type II Diabetes, Its Relationship with Obesity and Basal Metabolic Rate

2019 ◽  
Vol 1 (1) ◽  
pp. 2-7
Author(s):  
Faiza Kamal ◽  
Rozina Arshad ◽  
Bilal Bin Younis ◽  
Rashid Ahmed ◽  
Zakia Noureen ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Glycemic Control ◽  
Metabolic Rate ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Glycated Hemoglobin ◽  
Fasting Blood Glucose ◽  
Diabetic Patients ◽  
Normal Body Mass Index ◽  
Sample Population

Background: The prevalence of T2DM is around 7-10%. Control of diabetes and factors influencing it in thirdworld countries need to be clearly defined as most of the people have poor glycemic control. Methods: A cross sectional study was conducted and purposive sampling was done to collect data for 5 months. Atotal of 766 type 2 diabetic patients were enrolled who visited SiDER (Sakina Institute of Diabetes and EndocrineResearch Center) at Shalamar Hospital, Lahore, Pakistan. Only pre-diagnosed diabetic subjects with a random bloodglucose of more than 200mg/dl at two occasions and fasting blood glucose levels more than 126mg/dl were includedin the study. Variables like Body Mass Index (BMI), Glycated Hemoglobin (HbA1c) and Basal Metabolic Rate(BMR) were recorded. The data was analyzed by SPSS 22 version. Results: A total of 766 diabetics were recruited in the study out of which 40.3% were male and 59.7% werefemales. The mean age was 48.72±10.43 years. Out of these 53.39% were obese, 32.64% were overweight and only13.97% had a normal body mass index BMI). HbA1c levels in the sample population showed that only 13.05% hadvery healthy control i.e. 7% or less. There was a positive co-relation between Body Mass Indexand glycemiccontrol. However there was no statistically significant relation between Basal Metabolic Rateand glycemic control. Conclusion: People with high Body Mass Index were found to have suboptimal glycemic control. It was alsoobserved that higher percentage of diabetic patients fall in age group of 41-55 years. More powerful studies areneeded to establish a relation between glycated hemoglobin and Basal Metabolic Rate.

scholarly journals The influence of age and body mass index on relative accuracy of energy intake among Japanese adults

2006 ◽  
Vol 9 (5) ◽  
pp. 651-657 ◽  
Author(s):  
Hitomi Okubo ◽  
Satoshi Sasaki ◽  
Naoko Hirota ◽  
Akiko Notsu ◽  
Hidemi Todoriki ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Metabolic Rate ◽  
Energy Intake ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Relative Accuracy ◽  
Age Group ◽  
Diet Records ◽  
Four Seasons ◽  
Japanese Adults

AbstractObjectiveTo examine relationships between the ratio of energy intake to basal metabolic rate (EI/BMR) and age and body mass index (BMI) among Japanese adults.DesignEnergy intake was assessed by 4-day semi-weighed diet records in each of four seasons (16 days in total). The EI/BMR ratio was calculated from reported energy intake and estimated basal metabolic rate as an indicator of reporting accuracy.SettingResidents in three areas in Japan, namely Osaka (urban), Nagano (rural inland) and Tottori (rural coastal).SubjectsOne hundred and eighty-three healthy Japanese men and women aged ≥30 years.ResultsThe oldest age group (≥60 years) had higher EI/BMR values than the youngest age group (30–39 years) in both sexes (1.74 vs. 1.37 for men; 1.65 vs. 1.43 for women). In multiple regression analyses, age correlated positively (partial correlation coefficient, β = 0.012, P < 0.001 for men; β = 0.011, P < 0.001 for women) and BMI correlated negatively (β = −0.031, P < 0.001 for men; β = −0.025, P < 0.01 for women) with EI/BMR.ConclusionAge and BMI may influence the relative accuracy of energy intake among Japanese adults.

Basal metabolic rate, body composition and whole-body protein turnover in Indian men with differing nutritional status

1991 ◽  
Vol 81 (3) ◽  
pp. 419-425 ◽  
Author(s):  
M. J. Soares ◽  
L. S. Piers ◽  
P. S. Shetty ◽  
S. Robinson ◽  
A. A. Jackson ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Metabolic Rate ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Protein Turnover ◽  
Normal Weight ◽  
Fat Free Mass ◽  
Whole Body ◽  
Body Protein ◽  
Significant Difference

1. Three groups of adult men were studied in Bangalore, India: two groups were controls who had been receiving an adequate diet. Of these, one group, designated ‘normal weight controls', had a mean body mass index of 22; the other group, ‘underweight controls', had a mean body mass index of 16.7. The third group consisted of poor labourers, whose daily food intake had been less than 10 MJ and whose mean body mass index was 16.6. Previous studies had shown that such men had a lower basal metabolic rate than well-nourished Indian control subjects. 2. The object of the present study was to find out whether a reduced rate of protein turnover, measured after a single dose of [15N]glycine, contributed to a lower basal metabolic rate. It was found, however, that after adjusting for body weight and fat-free mass by analysis of co-variance there was no significant difference in basal metabolic rate between the three groups. Adjusted rates of protein synthesis were higher in the underweight controls and the undernourished labourers than in the normal weight controls, but not significantly so. 3. Estimates based on creatinine excretion showed that within the fat-free mass the underweight groups had a higher proportion of non-muscle to muscle mass. This may explain the somewhat higher rates of protein turnover in these groups. 4. Nitrogen flux (Q) was determined from 15N abundance in two end products, urea (QU) and ammonia (QA). In the underweight and undernourished groups the ratio QU/QA was increased compared with the normal weight group. This fits in with the finding of a greater proportion of visceral mass in the underweight subjects and with the compartmental model of protein metabolism that we have previously proposed.

The relationship between body mass and rate of rewarming from hibernation and daily torpor in mammals

1990 ◽  
Vol 151 (1) ◽  
pp. 349-359 ◽  
Author(s):  
F. Geiser ◽  
R. V. Baudinette
Keyword(s):  
Metabolic Rate ◽  
Body Mass ◽  
Air Temperature ◽  
Basal Metabolic Rate ◽  
Strong Relationship ◽  
The Other ◽  
Daily Torpor ◽  
Pronounced Increase ◽  
The Relationship

1. Rewarming rate from torpor and body mass were inversely related in 86 mammals ranging in body mass between 2 and 8500 g. 2. Most of the mammalian taxa investigated showed a similar change of rewarming rate with body mass. Only the insectivores showed a more pronounced increase in rewarming with a decrease in body mass than did the other taxa. The rates of rewarming of marsupials were similar to those of placentals. 3. At low air temperature (Ta), the rate of rewarming of marsupials was not related to body mass, although a strong relationship between the two variables was observed in the same species at high Ta. 4. The slopes relating rewarming rates and body mass of the mammalian groups and taxa analysed here were similar to those obtained earlier for mass-specific basal metabolic rate (BMR) and body mass in mammals, suggesting that the rate of rewarming and BMR are physiologically linked.

ENERGY EXPENDITURE IN 21-HYDROXYLASE CONGENITAL ADRENAL HYPERPLASIA PATIENTS AND COMPARISON WITH PREDICTIVE EQUATIONS

2020 ◽  
Vol 26 (4) ◽  
pp. 388-398
Author(s):  
Daniel Minutti de Oliveira ◽  
Ana Carolina Junqueira Vasques ◽  
Ezequiel Moreira Gonçalves ◽  
Sofia Helena Valente de Lemos-Marini ◽  
Gil Guerra-Junior ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Weight ◽  
Energy Expenditure ◽  
Congenital Adrenal Hyperplasia ◽  
Body Mass ◽  
Indirect Calorimetry ◽  
Resting Energy Expenditure ◽  
Adrenal Hyperplasia ◽  
Predictive Equations ◽  
17 Hydroxyprogesterone

Objective: To characterize resting energy expenditure (REE) in patients with classic 21-hydroxylase congenital adrenal hyperplasia (21-OH CAH) using indirect calorimetry and compare it to the most commonly used REE predictive equations. Methods: This case-control study comprised 29 post-pubertal 21-OH CAH patients regularly followed at the University of Campinas. Elevated serum 17-hydroxyprogesterone and CYP21 gene molecular analysis confirmed the diagnosis. A healthy control group paired by age, gender, and body mass index was examined. Dual-energy X-ray absorptiometry (DEXA) measured body compositions. A bioimpedance analyzer determined fat-free mass, and indirect calorimetry using a metabolic cart measured REE. Results: Unlike our initial hypothesis, REE was similar between the groups (18.7 ± 3.1 kcal/kg/day in CAH vs. 20.3 ± 3.5 kcal/kg/day in controls; P = .728). No predictive equations reached the stipulated accuracy criteria, thus lacking validity in REE assessment in adults with the characteristics of the group studied. DEXA analysis revealed higher body fat and diminished nonbone lean mass in 21-OH CAH. Anthropometric and bioelectrical impedance parameters were not significantly different. Conclusion: Classic 21-OH CAH is generally followed in reference centers, which may facilitate indirect calorimetry use for REE measurement. Alternatively, considering our REE findings in adult 21-OH CAH patients, nutrition management based on 25 kcal/body weight/day (measured REE × activity factor 1.2 to 1.3) may be reasonable for current body weight maintenance in these patients. Abbreviations: 17-OHP = 17-hydroxyprogesterone; 21-OH CAH = classic 21-hydroxylase deficiency congenital adrenal hyperplasia; BMI = body mass index; REE = resting energy expenditure; VO2 = volume of oxygen; VCO2 = volume of carbon dioxide

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