OBJECTIVES This study compared activity levels of adolescents with chronic pain and healthy adolescents, and investigated relations between actigraphy and subjective measures of activity limitations and depression. METHODS Forty adolescents (n = 20 with chronic pain, n = 20 otherwise healthy; 12-17 years; 72.5% females) participated. Adolescents completed questionnaires regarding pain, activi...

Supplemental melatonin has shown promise in treating sleep onset insomnia in children with autism spectrum disorders (ASD). Twenty-four children, free of psychotropic medications, completed an open-label dose-escalation study to assess dose-response, tolerability, safety, feasibility of collecting actigraphy data, and ability of outcome measures to detect change during a 14-week intervention. S...

ABSTRACT BACKGROUND Although the relationships among physical disability, mood disorders, and pain are well described in multiple sclerosis (MS), little is known about whether those symptoms associated with sleep disturbances. METHODS Forty-six patients MS experiencing participated. Sleep was indirectly measured by assessing rest-activity rhythm via actigraphy: interdaily stability, intradaily ...

Circadian rhythmicity in humans has been well studied using actigraphy, a method of measuring gross motor movement. As actigraphic technology continues to evolve, it is important for data analysis to keep pace with new variables and features. Our objective is to study the behavior of two variables, interdaily stability and intradaily variability, to describe rest activity rhythm. Simulated data...

OBJECTIVE To develop and evaluate adjustment factors to convert parent-reported time in bed to an estimate of child sleep time consistent with objective measurement. METHODS A community sample of 217 children aged 4-9 years (mean age = 6.6 years) wore actigraph wristwatches to objectively measure sleep for 7 days while parents completed reports of child sleep each night. After examining the m...

BACKGROUND A study of the pattern of Sleep/Wake disturbance in frontotemporal dementia (FTD). METHODS Sleep diaries and prolonged actigraphy were used to record the activity, sleep and wake of 13 patients with a clinical diagnosis of FTD. These were compared with diaries and actigraphy from normal age/sex matched controls and also to a population with probable Alzheimer's disease (AD). RESU...

Wrist actigraphy is a well established procedure used to measure the activity of a subject for long time periods. It is a valuable tool to detect abnormal movement patterns associated with several sleep disorders, including, insomnia, phase lag and periodic limb movements. A potential ability of the actigraphy data, together with other sources of physiological and behavioral information, is the...

Participants with chronic fatigue syndrome were categorized into subtypes based on actigraphy and illness selfreport symptom severity data. Each method identified two groups of patients, one with severe and one with less severe manifestations of the illness. For both subtypes, those in the more severe category had more physical functioning problems than those in the less severe categories. Howe...