title: The body as a bioenergetic system--lessons from systems engineering and comparative physiology.
abstract: This introductory review considers some concepts of energy supply and demand from the perspective of a systems engineer looking at comparative physiology. The non-steady-state response of oxygen uptake shows major differences between animal species. Similarly, maximal oxygen uptake shows between-species differences. It is suggested that the systems engineering approach could help in understanding questions concerning the interrelationship of these observations.
authors.affiliation: Department of Baromedicine, Karolinska Institutet, Stockholm, Sweden.
authors.forename: D
authors.initials: D
authors.lastname: Linnarsson
mesh_terms: D004526:Efficiency / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D010101:Oxygen Consumption / Q000502:physiology*; D011659:Pulmonary Gas Exchange / Q000502:physiology*