Dynamic Energy Expenditure
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
This article defines dynamic energy expenditure as the excess energy used during mechanical work compared to the energy used at rest. It explains that only a portion of this energy is used for the work itself, with the rest primarily generating heat and supporting increased heart and respiratory activity.
Encyclopedia entry (1928–1936)
Dynamic Energy Expenditure, the excess energy expenditure during the production of mechanical work compared to the energy expenditure by the same person in a state of rest (the so-called static expenditure). The latter changes depending on the age, height, and weight of the subject's body. Not all dynamic energy expenditure goes toward muscular work, but only a part of it (on average 20%); this ratio is called the coefficient of useful action. The greater part of the dynamic expenditure, however, goes mainly to the development of heat lost by the body through the surface of the skin; the increased activity of the heart and respiratory muscles due to muscular work also requires an increased energy expenditure. The usual designation for dynamic expenditure is Dd (Depense dynamique; Chauveau).
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“Dynamic Energy Expenditure.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/dynamic-energy-expenditure/