title: A mathematical model for constituent ratios of energy expenditure in human.
abstract: In order to assess the constituent ratios of energy expenditure in human, the deductive process of establishing a mathematical model for assessing the constituent ratios of the three major nutrients in energy expenditure in human was described in this paper. Total oxygen consumption, total carbon dioxide output and total nitrogen (urine nitrogen + skin nitrogen) excretion are related to the oxidation of the three major nutrients and the physiological combustion values of the three nutrients are already known. Based on these measurable and known parameters, the mathematical model established by the authors will help understand the characteristics of the tested individual's energy expenditure.
authors.affiliation: Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, China. wensanyu@tom.com
authors.forename: Wen-San
authors.initials: WS
authors.lastname: Yu
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Zhao
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D008962:Models, Theoretical; D009747:Nutritional Physiological Phenomena / Q000502:physiology; D010101:Oxygen Consumption
chemical_list: D002245:Carbon Dioxide