The objective of this study was to investigate the reliability and validity of the Pittsburgh Sleep Quality Index (PSQI) in a non-clinical sample consisting of younger and older adults. There has been little research validating the PSQI with respect to multinight recording as with actigraphy, and more validation is needed in samples not specifically selected for clinical disturbance. Also, the ...

The purpose of this study was to examine the structural validity of the Pittsburgh Sleep Quality Index (PSQI) in Chinese undergraduate students. A cross-sectional questionnaire survey with 631 Chinese undergraduate students was conducted, and the questionnaire package included a measure of demographic characteristics, PSQI, Chinese editions of Center for Epidemiologic Studies-Depression, State-...

purpose: to investigate associations between computer use data and sleep quality among university students. materials and methods: this descriptive, cross-sectional study was performed on 312 students of tehran university of medical sciences, iran. data was collected using epworth sleepiness scale (ess), insomnia severity index (tsi), pittsburgh sleep quality index (psqi), and a background and ...

BACKGROUND Perceived sleep quality may play an important role in diagnosis and therapy for obstructive sleep apnea (OSA). However, few studies have assessed factors that are associated with perceived sleep quality in OSA patients. Hypoxemia depresses the central nervous system and attenuates the perceived respiratory load in asthmatic patients. This study aimed to investigate the factors relate...

background : sleep disturbances are common among older adults. recently there is much interest in complementary and alternative medicine (cam) from the population in general, and the elderly are no exception. tai chi exercise as a cam can be performed by older adults. the purpose of this study was to evaluate the effects of tai chi exercise on sleep quality of elderly residents in sadeghiyeh el...

Background: Recently, poor cardiorespiratory fitness (CRF) has been postulated as an adverse health outcome related to sleep quality. However, studies investigating the relationship between CRF and a subjective quality index are scarce. Thus, current study aimed investigate association Pittsburgh Sleep Quality Index (PSQI) in apparently healthy people. The secondary aim was reported physical ac...

BACKGROUND Impaired sleep quality is commonplace within industrialized societies, as evidenced by the increasing number of prescription sleep aids available. Certain herbal preparations have been suggested to provide a natural benefit to sleep; however, limited controlled data are available documenting this benefit. In the present study we tested the effect of an experimental dietary supplement...

SLEEP DISTURBANCE IS PREVALENT IN OLDER ADULTS, WITH MORE THAN 30% OF ELDERLY REPORTING IMPAIRED SLEEP QUALITY AND CHRONIC DIFFICULTIES with sleep performance, ranging from long latency periods before falling asleep and frequent awakenings at night to difficulties returning to sleep upon awakening.1 Such disturbances of sleep impact daytime functioning, reduce quality of life, and are reported ...

The aim of the present study was to evaluate sleep quality in myopic children and adults. This cross sectional study surveyed 486 participants aged from 10 to 59 years with refractive errors using a questionnaire containing the Pittsburgh Sleep Quality Index (PSQI) and Hospital Anxiety and Depression Scale (HADS). Children (< 20 years) in the high myopia group exhibited the poorest PSQI scores ...