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Am J Ind Med. 2005 Sep;48(3):182-93.

Job strain and autonomic indices of cardiovascular disease risk.

Author information

  • 1Department of Physical Therapy, School of Health and Environment, University of Massachusetts, Lowell, Massachusetts 01854, USA. Sean_Collins@uml.edu

Abstract

BACKGROUND:

Despite the epidemiological evidence linking job strain to cardiovascular disease, more insight is needed into the etiologic mechanisms. This, in turn, would help to more precisely identify risk.

METHODS:

We measured Job Strain using the Job Content Questionnaire, 8/day diary reports, and nationally standardized occupational code linkage, as well as autonomic regulation utilizing heart rate variability including spectral-derived components and QT interval variability in 36 healthy mid-aged males with varying strain jobs. The subjects wore Holter-monitors for 48 hr; this included a work and rest day.

RESULTS:

Job strain (P = 0.02) and low decision latitude (P = 0.004) were associated with a reduction in cardiac vagal control (HFP) persisting throughout the 48 hr. Job strain was also associated with elevations in sympathetic control during working hours (P = 0.003).

CONCLUSIONS:

The disturbed cardiovascular regulatory pattern associated with job strain may help explain the increased risk of cardiovascular diseases linked with occupational exposure.

PMID:
16094616
[PubMed - indexed for MEDLINE]
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