id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-252129-hlqr5jby	Bisciotti, Gian Nicola	Return to football training and competition after lockdown caused by the COVID-19 pandemic: medical recommendations	2020-06-25		.txt	text/plain	4859	261	46	A period of 2-4 weeks of detraining causes a quick initial decrease in VO 2 max followed over the longer term by a decrease of blood volume together with a de-Biology of Sport, Vol. 37 No3, 2020 315 Return to football training and competition after lockdown human skeletal muscle shows three different types MyHC: type I, type IIa and type IIx. The so-called "pure fibres" express a single MyHC isoform, while the so-called "hybrid fibres" show co-expression of multiple MyHC isoforms [22] . Since the long detraining period caused by lockdown due to the COVID-19 pandemic may have caused both a loss of muscle mass (atrophy) and a decrease or a loss of the fast fibres' particular characteristics, we suggest organizing the resistance training in two periods. Some authors have reported an increase in Achilles tendon injuries Biology of Sport, Vol. 37 No3, 2020 317 Return to football training and competition after lockdown detraining period such as that imposed by the COVID-19 pandemic.	./cache/cord-252129-hlqr5jby.txt	./txt/cord-252129-hlqr5jby.txt