scholarly journals Determination of the total daily energy expenditure in man by indirect calorimetry: assessment of the accuracy of a modern technique

1959 ◽  
Vol 13 (1) ◽  
pp. 41-53 ◽  
Author(s):  
J. V. G. A. Durnin ◽  
J. M. Brockway
Keyword(s):  
Energy Expenditure ◽  
Indirect Calorimetry ◽  
Daily Energy Expenditure ◽  
Modern Technique ◽  
Daily Energy ◽  
Total Daily Energy Expenditure

scholarly journals Concepts of indirect calorimetry on metabolic disorders: a narrative review

2020 ◽  
Vol 99 (6) ◽  
pp. 581-590
Author(s):  
Rocio San Martin ◽  
Camila Fernanda Cunha Brandao ◽  
Marcia Varella Morandi Junqueira-Franco ◽  
Gizela Pedroso Junqueira ◽  
Fernando Bahdur Chueire ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Indirect Calorimetry ◽  
Metabolic Disorders ◽  
Resting Energy Expenditure ◽  
Daily Energy Expenditure ◽  
Methodological Basis ◽  
Daily Energy ◽  
Total Daily Energy Expenditure ◽  
Methodological Aspects ◽  
Resting Energy

Introduction: Indirect calorimetry remains a gold standard in measuring resting energy expenditure in the clinical field. Through its measurements, it is possible to offers a patient’s energy needs to maximize nutritional therapy benefits. However, the concepts and methodological basis of collected data can be difficult to be interpreted by users in clinical practice. Objective: To address the concepts of total daily energy expenditure and its components and present the methodological aspects of indirect calorimetry that can guide the clinical field. Method: Narrative bibliographic review using the electronic Pubmed (US National Library of Medicine), SCOPUS, and Scientific Electronic Library Online (SCIELO) databases. The research was carried out in the period between 1905-2019, using the following identifiers in Health Sciences Descriptors: Basal Metabolism, Energy Metabolism and Indirect Calorimetry. We selected 55 researches published that presented contents related to the objectives of this study. Result: The total daily energy expenditure (TDEE) is comprised of three main components, such as physical activity (PA), thermic effect of food (TEF) and basal metabolic rate (BMR) and/or resting energy expenditure (REE). The REE is generally evaluated by indirect calorimetry, which also provides information on the respiratory coefficient (RQ) or oxidation of substrates. Its result varies depending on the existence of some metabolic disorders such as obesity or malnutrition. Therefore, the proper management of the methodological aspects of indirect calorimetry and its subsequent interpretation in metabolic disorders is essential to guarantee the results’ quality. Conclusion: Energy expenditure concepts and the methodological basis of indirect calorimetry are relevant to providing individualized attention to patients with metabolic disorders. This review can be used as a practical guide, helping to understand the correct application of the indirect calorimetry technique in studies related to energy expenditure with an emphasis on metabolic disorders.

scholarly journals OCCUPATIONAL SEDENTARY BEHAVIOR AND SOLUTIONS TO INCREASE NON-EXERCISE ACTIVITY THERMOGENESIS

2016 ◽  
Vol 14 (2) ◽  
pp. 1-21
Author(s):  
Haley M. Scott ◽  
Tess N. Tyton ◽  
Craig A. Horswill
Keyword(s):  
Energy Expenditure ◽  
Sedentary Behavior ◽  
The Other ◽  
Daily Energy Expenditure ◽  
Sedentary Behaviors ◽  
Prolonged Sitting ◽  
Daily Energy ◽  
Total Daily Energy Expenditure ◽  
Exercise Activity ◽  
Prevalence Of Obesity

As the prevalence of obesity rises worldwide, researchers pursue explanations for the phenomenon, particularly those relevant to energy expenditure.  Non-exercise activity thermogenesis, or NEAT, has been identified as an inconspicuous but appreciable component of total daily energy expenditure.  Demands of certain occupations discourage time for planned physical activity and clearly diminish NEAT, and thereby contribute to sedentary behaviors that underlie increased adiposity. Prolonged sitting during the workday has specifically been identified as a risk factor for obesity and chronic disease independent of existing risk factors. Practical strategies have been launched by industry to increase NEAT during the workday. Workstations that involve maintaining balance while sitting on an exercise ball, standing, pedaling while sitting, and walking at a treadmill desk have been developed to counter extended periods of sedentary behavior at work.  While data are limited particularly for chronic benefits, the stations that promote the most movement – the pedaling and walking stations – increase METS and energy expenditure more so than the other alternatives.  The drawback to greater motion may be reduced attention to the desk job and therefore, reduced cognitive function; however, the data are inconsistent and the benefit for health may outweigh small distractions for some tasks at the desk.

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