TY - CHAP M1 - Book, Section TI - Respiratory System Response to Exercise in Health A1 - Dempsey, Jerome A. A1 - Jacques, Anthony J. A2 - Grippi, Michael A. A2 - Elias, Jack A. A2 - Fishman, Jay A. A2 - Kotloff, Robert M. A2 - Pack, Allan I. A2 - Senior, Robert M. A2 - Siegel, Mark D. Y1 - 2015 N1 - T2 - Fishman's Pulmonary Diseases and Disorders, 5e AB - The increases in muscular oxygen consumption (V̇O2) and carbon dioxide production (V̇CO2) accompanying whole-body exercise present a greater challenge to the maintenance of pulmonary gas exchange than any other physiologic stressor. This chapter discusses the responses of the healthy respiratory system to exercise with an emphasis on the following problems: what neurochemical mechanisms regulate the ventilatory response to exercise and what are the consequences of this hyperpnea to the work and to the fatigue of the respiratory muscles? What mechanisms underlie the widening of the alveolar to arterial partial pressure of oxygen (Po2) difference during exercise? How do the unique characteristics of the pulmonary circulation determine its response to exercise? How does respiration impact the cardiovascular response to exercise? Under what circumstances might the respiratory system provide a limitation to O2 transport and/or exercise performance? We consider these problems primarily in the healthy, young, normally fit adult, with reference to special cases of the highly trained athlete and to the effects of healthy aging, high altitude hypoxia, and physical training. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/24 UR - accessmedicine.mhmedical.com/content.aspx?aid=1122355615 ER -