title: The reciprocal relationship between vigor and insomnia: a three-wave prospective study of employed adults.
abstract: Vigor is a positive affect experienced at work. It refers to feelings of possessing physical strength, emotional energy, and cognitive liveliness. Accumulated evidence suggests that vigor has a protective effect on health, but the mechanisms of this link remain to be discovered. This study focused on sleep quality as one possible mechanism. We used a full-panel, longitudinal design to investigate the hypothesis that changes in vigor over time have inverse effects on insomnia and vice versa. The study was conducted on a multi-occupational sample of working adults (N = 1,414, 70 % men) at three time points (T1, T2, and T3), over a period of about 3 years. Vigor was assessed by the Shirom-Melamed Vigor Measure, while insomnia was assessed by the Brief Athens Insomnia Scale. Results of SEM-analyses, controlling for neuroticism, and other potential confounding variables, offered a strong support for the study hypotheses, indicating cross-lagged reciprocal inverse relationships between vigor and insomnia. The results suggest that vigor has a protective effect on sleep quality and that vigor might positively influence health through this pathway.
authors: Department of Psychology, University of Haifa, Haifa, 31905, Israel, galitarmon@psy.haifa.ac.il.
authors: Galit
authors: G
authors: Armon
authors: Samuel
authors: S
authors: Melamed
authors: Amiram
authors: A
authors: Vinokur
mesh_terms: D000328:Adult; D000339:Affect; D000368:Aged; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D011446:Prospective Studies; D007319:Sleep Initiation and Maintenance Disorders / Q000523:psychology*; D014937:Work / Q000523:psychology*; D055815:Young Adult
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