Sleep
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Randomized Controlled Trial
Zopiclone Increases the Arousal Threshold without Impairing Genioglossus Activity in Obstructive Sleep Apnea.
To determine the effects of the nonbenzodiazepine sedative zopiclone on the threshold to arousal with increasing respiratory effort and genioglossus muscle activity and to examine potential physiological factors mediating disparate effects of zopiclone on obstructive sleep apnea (OSA) severity between patients. ⋯ Australian New Zealand Clinical Trials Registry, http://www.anzctr.org.au, trial ID: ACTRN12614000364673.
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We examined the association of objectively and subjectively measured sleep disturbances with depression, and explored if race/ethnicity, socioeconomic status, and sex modified these associations. ⋯ Sleep disturbances are associated with depression among middle-aged and older adults; these associations may be modified by education and sex. Future research should further test these hypotheses, evaluate whether early detection or treatment of sleep disturbances ameliorate depression, and explore subpopulation differences.
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This study aimed to (1) examine the relationship between subjective and actigraphy-defined sleep, and next-day fatigue in chronic fatigue syndrome (CFS); and (2) investigate the potential mediating role of negative mood on this relationship. We also sought to examine the effect of presleep arousal on perceptions of sleep. ⋯ For the first time we show that nightly subjective sleep predicts next-day fatigue in CFS and identify important factors driving this relationship. Our data suggest that sleep specific interventions, targeting presleep arousal, perceptions of sleep and negative mood on waking, may improve fatigue in CFS.