Nonrestorative sleep as a distinct component of insomnia.
Sleep
; 33(4): 449-58, 2010 Apr.
Article
en En
| MEDLINE
| ID: mdl-20394313
ABSTRACT
STUDY OBJECTIVES:
Explore characteristics of nonrestorative sleep (NRS) in prospectively defined subgroups of individuals with NRS symptoms, investigate whether NRS can occur independently of difficulties initiating and maintaining sleep (DIS/DMS), and determine its effect on waking function.DESIGN:
Cross-sectional and longitudinal population-based study comparing patterns of daytime symptoms, and their persistence, in cohorts of subjects with NRS symptoms grouped according to presence or absence of DIS and DMS.SETTING:
28 sleep centers in the US.PARTICIPANTS:
Subjects reporting awakening unrestored or unrefreshed at least 3 times weekly over the previous 3 months were classified, based on self-reported sleep problems, to DIS (n = 138), DMS (n = 44), DIS+DMS (n = 125), and NRS-only (no DIS or DMS; n = 192) cohorts. Eighty healthy volunteers formed a control group.INTERVENTIONS:
None. MEASUREMENTS ANDRESULTS:
Polysomnography confirmed DIS and/or DMS in 56/138 (41%), 18/44 (41%), and 37/125 (30%) subjects in DIS, DMS, and DIS+DMS cohorts, respectively; and absence of DIS or DMS in 115/192 (60%) NRS-only subjects and 52/80 (65%) healthy volunteers. Multiple subject-reported endpoints including the Endicott Work Productivity Scale, Pittsburgh Insomnia Rating Scale, Restorative Sleep Questionnaire, and SF-36, showed that NRS-only subjects had significantly impaired daytime function relative to healthy volunteers, comparable to impairment affecting subjects with DIS and/or DMS. Symptoms persisted over 3 months.CONCLUSIONS:
This study confirms that NRS can occur independently of other components of insomnia. Daytime symptoms were as severe in individuals with NRS-only as those whose NRS symptoms were combined with DIS or DMS.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Trastornos del Inicio y del Mantenimiento del Sueño
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
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Observational_studies
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Prevalence_studies
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Risk_factors_studies
Aspecto:
Patient_preference
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Sleep
Año:
2010
Tipo del documento:
Article
País de afiliación:
Estados Unidos