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Nathan Zuntz (1847–1920): Contributions to Exercise Physiology
Author(s) -
Tipton Charles M.
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.1125.1
Subject(s) - thermoregulation , respiration , physiology , energy metabolism , exercise physiology , cardiovascular physiology , medicine , biology , anatomy
During his career, Zuntz was nominated three times for the Nobel Prize for his collective contributions to respiration, circulation, hematology (blood), thermoregulation, & nutrition (metabolism). Besides high altitude physiology, he was also interested in the physiology of performance of both animals and humans and was associated with the development of respiratory apparatus, climatic chambers, treadmills and methodology to secure measurements of their responses. He secured O 2 consumption results from individuals marching, cycling, swimming, climbing, typing and working in the mines. Repeated marching (training) decreased the energy requirements of marching but, not for other tasks. Heart rates, blood pressures and cardiacoutputs were secured during exercise with horses while reductions in cardiac dimensions were recorded (X rays) in humans when exercising. With marching, he found RBC increased by 9% and that improper clothing, elevated air temperatures and high humidity %'s caused overheating and impaired thermoregulation. Dehydration was to be avoided because it altered thermoregulation and he opposed any attempt to withhold water from workers or athletes. From RQ (RER) data, he concluded carbohydrates could form fat and produce energy and that during moderate exercise, both fat and carbohydrates were utilized in the proportion they were presented to the tissues whereas proteins were not an important substrate. This view was contrary to the one of Liebig and the basis of a controversy with Chauveau.