Chronic fatigue syndrome and high allostatic load

Autor(en)

Elizabeth M Maloney, Roumiana S Boneva, Urs Markus Nater, William C Reeves

Abstrakt

OBJECTIVE: To confirm the association of chronic fatigue syndrome (CFS) with high allostatic load (AL) level, examine the association of subsyndromal CFS with AL level, and investigate the effect of depression on these relationships and the association of AL with functional impairment, fatigue, symptom severity, fatigue duration, and type of CFS onset. AL represents the cumulative physiologic effect of demands to adapt to stress.

METHODS: Population-based case-control study of 83 persons with CFS, 202 persons with insufficient symptoms or fatigue for CFS (ISF), and 109 well controls living in Georgia. Unconditional logistic regression was used to generate odds ratios (ORs) as measures of the association of AL with CFS.

RESULTS: Relative to well controls, each 1-point increase in allostatic load index (ALI) was associated with a 26% increase in likelihood of having CFS (OR(adjusted) = 1.26, 95% Confidence Interval (CI) = 1.00, 1.59). This association remained in the presence and absence of depression (OR(adjusted) = 1.35, CI = 1.07, 1.72; OR(adjusted) = 1.35, CI = 1.10, 1.65). Compared with the ISF group, each 1-point increase in ALI was associated with a 10% increase in likelihood of having CFS (OR(adjusted) = 1.10, CI = 0.93, 1.31). Among persons with CFS, the duration of fatigue was inversely correlated with ALI (r = -.26, p = .047).

CONCLUSIONS: Compared with well controls, persons with CFS were significantly more likely to have a high AL. AL increased in a gradient across well, ISF, and CFS groups.

Organisation(en)

Externe Organisation(en)

Centers for Disease Control and Prevention, Universität Zürich (UZH)

Journal

Journal of Psychosomatic Research

Band

Seiten

549-556

Anzahl der Seiten

ISSN

0022-3999

DOI

https://doi.org/10.1097/PSY.0b013e3181a4fea8

Publikationsdatum

06-2009

Peer-reviewed

ÖFOS 2012

501010 Klinische Psychologie

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a3c5e470-9989-4660-9eb3-a460165181d3