SINCE THE INTRODUCTION OF POLYSOMNOGRAPHY (PSG) IN THE 1950S, THIS METHOD HAS BEEN REGARDED AS THE GOLD STANDARD FOR OBJECTIVE assessment of sleep,1 providing measures of both sleep and wake time, in addition to classification of sleep stages. Even though PSG offers extensive information on sleep behavior and sleep physiology, it is very expensive and can sometimes be too invasive to be used in...

BACKGROUND Actigraphy is increasingly used in sleep research and the clinical care of patients with sleep and circadian rhythm abnormalities. The following practice parameters update the previous practice parameters published in 2003 for the use of actigraphy in the study of sleep and circadian rhythms. METHODS Based upon a systematic grading of evidence, members of the Standards of Practice ...

Detecting the effectiveness of behavioral interventions to reduce infant night-waking requires valid sleep measures. Although viewed as an objective measure, actigraphy has overestimated night-waking. Sleep diaries are criticized for only documenting night-waking with infant crying. To support potential outcome measure validity, we examined differences between sleep diaries and actigraphy in de...

background: previous studies on the relationship between sleep patterns and obesity in the elderly are limited and have conflicting results. moreover, few studies have measured sleep patterns objectively. in this study, we investigated objective sleep patterns and their relationship with obesity in the elderly in tehran, iran. methods: in this cross-sectional study, 88 elderly (≥60 years old) w...

OBJECTIVE Improving and validating sleep scoring algorithms for actigraphs enhances their usefulness in clinical and research applications. The MTI® device (ActiGraph, Pensacola, FL) had not been previously validated for sleep. The aims were to (1) compare the accuracy of sleep metrics obtained via wrist- and hip-mounted MTI® actigraphs with polysomnographic (PSG) recordings in a sample that in...

ADOLESCENCE IS A TIME OF RAPID CHANGES IN SLEEP PATTERNS AND OF RISING PREVALENCE OF SLEEPINESS, WITH ADOLESCENTS HAVING BEEN IDENTIFIED as being at high risk for problem sleepiness.1 Sleep deprivation among adolescents is a rising concern among parents, health professionals, and educators.2,3,4,5,6 In light of the concerns and growing awareness of the problems associated with adolescent sleep,...

There is a widespread belief that subjective accounts of disease are key components of measures of disease severity and quality of life. In the present study we have set out to test this hypothesis using visual analogue scales (VAS) for itch, as a subjective measure, and actigraphy as an objective measure. One-hundred and seventeen itchy children and adults (and 25 controls) were studied for cl...

Sleep deprivation is common in intensive care unit (ICU) patients. The criterion standard for sleep monitoring, polysomnography, is impractical in ICU. Actigraphy (a wrist watch indicating amount of sleep) proved to be a good alternative in non-ICU patients, but not in prolonged mechanically ventilated patients, probably due to ICU-acquired weakness. Short-stay ICU patients do not suffer from I...

Pandi-Perumal and Gonfalone presented perspective on sleep in space by overviewing the past medical reports [3]. The authors made special emphasis on “normal sleep” in space, where no gravity exists. According to their review, sleep in space was mainly monitored by subjective sleep diaries and actigraphy (wrist-worn accelerometer). As sleep cycle was developed in response to the 24 h rotation o...

Activity-based sleep-wake monitoring or actigraphy has gained a central role as a sleep assessment tool in sleep medicine. It is used for sleep assessment in clinical sleep research, and as a diagnostic tool in sleep medicine. This update indicates that according to most studies, actigraphy has reasonable validity and reliability in normal individuals with relatively good sleep patterns. The va...