Principles of Human Energy Metabolism

  • Jose Galgani
  • Eric Ravussin


Energy is defined as the ability of a system to perform work. Energy is present in many forms, such as luminous energy coming from sun or kinetic energy obtained from wind and water. Humans obtain their energy from foods which is stored in the CH bonds of carbohydrates, lipids, proteins, and alcohol. To obtain the energy to live, grow, and reproduce, organisms must extract it in a usable form from plants and/or animal foods. This potential chemical energy is liberated inside cells through oxidative pathways that convert these CH bonds to energy-rich molecules such as creatine phosphate and adenosine triphosphate (ATP).


Physical Activity Level Basal Metabolic Rate Rest Metabolic Rate Respiratory Quotient Muscle Sympathetic Nerve Activity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Division of Health and Performance EnhancementPennington Biomedical Research CenterBaton RougeUSA

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