id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-339908-a2r5wzqn	Rajkumar, Ravi Philip	Sleep, physical activity and mental health during the COVID-19 pandemic: complexities and opportunities for intervention	2020-10-10		.txt	text/plain	1162	60	43	These effects are compounded by the adverse psychological effects produced by fear of infection, social isolation and loneliness caused by quarantine, and disruptions in education, employment, access to health care, and economic stability, leading to symptoms of anxiety, depression and post-traumatic stress in a substantial proportion of the general population [3, 4] . A further mediating variable of interest in this context is physical activity, which has been observed to change in complex manners during the COVID-19 lockdown, and which can influence sleep both by acting as an environmental "timekeeper" and by positively influencing psychological resilience in the face of COVID-19 [7] [8] [9] . In the context of this contemporary scenario, Ernstsen and Havnen have examined the relationship between self-reported sleep disturbances and mental health during the COVID-19 lockdown in Norway. Both depressive and anxiety symptoms were significantly associated with disturbed sleep, but no statistically significant evidence was found for a mediating role of changes in physical activity.	./cache/cord-339908-a2r5wzqn.txt	./txt/cord-339908-a2r5wzqn.txt