Background Actigraphy derived measures including amplitude, regularity, and variability of daily rhythm, have been shown to predict incident Alzheimer’s dementia. Here we developed an integrated actigraphy biomarker (IAB) for Alzheimer’ risk investigated whether the IAB predicted conversion from mild cognitive impairment (MCI) Method We studied 1195 participants (age 80.8±7.2yrs [SD]) Rush Memo...

STUDY OBJECTIVES Experimental evidence links poor sleep with susceptibility to infectious illness; however, it remains to be determined if naturally occurring sleep is associated with immune responses known to play a role in protection against infection. The aim of this study was to determine whether sleep duration, sleep efficiency, and sleep quality, assessed in the natural environment, predi...

STUDY OBJECTIVES Because sleep and wakefulness differ from each other by the amount of body movement, it has been claimed that the two states can be accurately distinguished by wrist actigraphy. Our objective was to test this claim in lengthy polysomnographic (psg) and actigraphic (acf) samples that included night and day components. DESIGN Fourteen healthy young (21-35 years) and old (70-72 ...

BACKGROUND In the context of increasing awareness about the need for assessment of sleep duration in community and clinical settings, the use of questionnaire-based tools may be fraught with reporter bias. Conversely, actigraphy provides objective assessments of sleep patterns. In this study, we aimed to determine the potential discrepancies between parentally-based sleep logs and concurrent ac...

AIMS AND OBJECTIVES This study aimed to evaluate effects of a non-pharmacological intervention on sleep, activity and fatigue in patients receiving peritoneal dialysis by the use of both actigraphy registration and self-assessed questionnaires. BACKGROUND Insomnia is estimated to affect up to 60% of haemo- and peritoneal dialysis patients. It is associated with two common uremic symptoms, pru...

Abstract Background In 2018, the American Academy of Sleep Medicine (AASM) published practice guidelines for use actigraphy in evaluating adult and paediatric patients with suspected sleep disorders. Whilst there is significant evidence research, this study aims to evaluate current future intended clinical cohorts across Australia New Zealand (NZ). Methods A 16-item survey was electronically di...