Insomnia Symptoms, Subjective Appraisals, and Fatigue: A Multiple Mediation Model.
Behav Sleep Med
; 17(3): 269-280, 2019.
Article
em En
| MEDLINE
| ID: mdl-28609122
ABSTRACT
OBJECTIVE AND BACKGROUND:
Fatigue and insomnia are common debilitating symptoms associated with multiple sclerosis (MS). Negative subjective appraisals of symptoms may influence both insomnia and fatigue severity, but this relationship has not been examined among those with MS. The relationship between insomnia symptoms and both physical and cognitive fatigue were examined. Health-related self-efficacy, fatigue catastrophization, and rumination were examined as potential mediators of the relationship between insomnia symptoms and fatigue.PARTICIPANTS:
Participants diagnosed with MS (N = 115) were recruited from hospital and community settings in a large metropolitan city.METHODS:
Participants completed self-report questionnaires, including Modified Fatigue Impact, Insomnia Severity Index, MS Quality of Life Questionnaire-54, Fatigue Catastrophizing Scale, Multidimensional Health Locus of Control Scale, and the Rumination-Reflection Questionnaire. Two multiple mediation analyses were performed using bootstrapping techniques, examining the cognitive and physical domains of fatigue as separate outcomes. RESULTS ANDCONCLUSIONS:
Mediation analyses revealed a significant association between insomnia symptom severity and the cognitive and physical domains of fatigue. Fatigue catastrophizing was the only significant mediator, accounting for 25% of the variance in the relationship between insomnia symptoms and the cognitive fatigue. However, fatigue catastrophizing did not significantly mediate the relationship between insomnia symptoms and physical fatigue, indicating physical and cognitive fatigue may reflect distinct processes in fatigue expression in those with MS.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Qualidade de Vida
/
Fadiga
/
Distúrbios do Início e da Manutenção do Sono
/
Esclerose Múltipla
Tipo de estudo:
Diagnostic_studies
/
Qualitative_research
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Behav Sleep Med
Assunto da revista:
CIENCIAS DO COMPORTAMENTO
/
NEUROLOGIA
/
PSICOFISIOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Canadá