Overcommitment but not effort-reward imbalance relates to stress-induced coagulation changes in teachers

von Känel, Roland; Bellingrath, Silja; Kudielka, Brigitte M (2009). Overcommitment but not effort-reward imbalance relates to stress-induced coagulation changes in teachers. Annals of behavioral medicine, 37(1), pp. 20-28. New York, N.Y.: Springer 10.1007/s12160-009-9082-y

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BACKGROUND: Stress-related hypercoagulability might link job stress with atherosclerosis. PURPOSE: This paper aims to study whether overcommitment, effort-reward imbalance, and the overcommitment by effort-reward imbalance interaction relate to an exaggerated procoagulant stress response. METHODS: We assessed job stress in 52 healthy teachers (49 +/- 8 years, 63% women) at study entry and, after a mean follow-up of 21 +/- 4 months, when they underwent an acute psychosocial stressor and had coagulation measures determined in plasma. In order to increase the reliability of job stress measures, entry and follow-up scores of overcommitment and of effort-reward imbalance were added up to total scores. RESULTS: During recovery from stress, elevated overcommitment correlated with D-dimer increase and with smaller fibrinogen decrease. In contrast, overcommitment was not associated with coagulation changes from pre-stress to immediately post-stress. Effort-reward imbalance and the interaction between overcommitment and effort-reward imbalance did not correlate with stress-induced changes in coagulation measures. CONCLUSIONS: Overcommitment predicted acute stress-induced hypercoagulability, particularly during the recovery period.

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