38. The physiology of exercise
38. The physiology of exercise
- Gillian Pocock, Gillian PocockSenior Lecturer in Clinical Science, Canterbury Christ Church University, Canterbury, UK
- Christopher D. RichardsChristopher D. RichardsEmeritus Professor of Experimental Physiology, Division of Physiology, Pharmacology and Neuroscience, Faculty of Life Sciences, University College London, London, UK
- and David A. RichardsDavid A. RichardsAssociate Professor, Department of Basic Pharmaceutical Sciences, Husson University School of Pharmacy, Bangor, Maine, USA
Abstract
This chapter reviews the interactions between the physiology of the endocrine, circulatory, and respiratory systems in the performance of everyday physical activity as the whole body responds to the stress of exercise. It explores how much energy is expended for different intensities of exercise and what is the source of that energy. It also talks about how the cardiovascular and respiratory systems are adjusted to meet the demands of exercise, and how far performance can be improved by training. The chapter looks at the intensity of exercise that varies from the very mild, such as a gentle stroll, to very severe, such as that encountered in sprinting and other athletic pursuits. It is a matter of everyday experience that the ability to sustain physical activity depends on its intensity.
