Research Database

Monitoring Sleep-Wake Rhythm with Actigraphy in Patients on Continuous Positive Airway Pressure Therapy

  • Published on 12/08/2010

Background Continuous positive airway pressure (CPAP) therapy has been shown to be effective in alleviating the underlying obstruction as well as reducing patients’ excessive sleepiness and improving their functioning and health-related quality of life. However, residual excessive sleepiness is observed in some patients even though CPAP therapy eliminates sleep apnea ...


Sleep Behaviour of Old People in Hong Kong

  • Published on 1999

Complaints of poor sleep and changes in sleep-wake patterns are common among old people. An understanding of the common 24-hour sleep-wake patterns and sleep satisfaction among old people is essential for effective sleep management. To this end, an exploratory study was conducted to examine the phenomenon. A set of valid ...


Sleep Changes Predict The Onset Of Physical Changes Associated With Puberty

  • Published on 12/03/2009

A study in the Dec.1 issue of the journal Sleep suggests that changes in children’s sleep patterns that typically occur between the ages of 11 and 12 years are evident before the physical changes associated with the onset of puberty. Results show that over the two-year course of the study, sleep ...


Nutritional Status, Growth and Sleep Habits Among Senegalese Adolescent Girls

  • Published on 2004

Objective To study the relation between sleep habits, nutritional status, growth and maturation in a group of African adolescent girls. The main hypothesis to be tested was that sleep length could be an effective way to spare energy, and thus malnourished girls sleep longer than normal girls. Design Three repeated ...


Nocturnal Activity and Sleep Assessment

  • Added on November 4, 2010

Sleep occupies approximately one third of our lives yet its modem study has largely been restricted to the use of the polygraph and to self-report via sleep logs. Actigraphy is a method for obtaining objective behavioral samples of nocturnal as well as diurnal activity. Activity is continuously measured and recorded ...


Issues of Validity in Actigraphic Sleep Assessment

  • Published on 2004

Objectives The Standards of Practice Committee of the American Sleep Disorders Association has supported the use of actigraphy in the assessment of sleep disorders. Pollak et al disagree. The objective of this paper is to identify and critically evaluate several theoretic and methodological issues that are central to these divergent ...