id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-320053-uceukiie	Jones, Arwel Wyn	Chapter 15 Exercise, Immunity, and Illness	2019-12-31		.txt	text/plain	19358	847	38	Abstract It is generally accepted that moderate amounts of exercise improve immune system functions and hence reduce the risk of infection whereas athletes engaged in regular prolonged and/or intensive training have a higher than "normal" incidence of minor infections, especially of the upper respiratory tract (URT, e.g., common cold and influenza). In contrast to animal research, human studies (attempting to discern the effects of prolonged exercise/intense training on URTI) have mainly involved monitoring athletes following heavy exertion (i.e., relied on natural exposure to pathogens) but only a limited number of these have verified that symptoms are due to infectious agents (pathogens) (Spence et al., 2007; Schwellnus et al., 2010; Hanstock et al., 2016) .	./cache/cord-320053-uceukiie.txt	./txt/cord-320053-uceukiie.txt