Key result
High emotional demands and time pressure were positively associated with emotional exhaustion, while 48-hour trait heart rate variability significantly buffered the detrimental effect of emotional demands on exhaustion.
Why the study?
The study aimed to integrate vagally mediated heart rate variability into the job demands-resources framework by evaluating it as both an outcome and a moderator of strain reactions.
Does trait heart rate variability moderate the relationship between job demands and emotional exhaustion in school teachers?
Observational (n=101)
Yes
Does trait heart rate variability moderate the relationship between job demands and emotional exhaustion in school teachers?
Trait heart rate variability may serve as a stress-buffering resource against emotional exhaustion from job demands in teachers.
Answers are grounded in this paper and cite their sources.
Trait HRV may buffer job demands on teacher exhaustion; hypothesis-generating, needs prospective trials before clinical use.
Background and Objectives: According to the job demands-resources (JD-R) model, strain reactions are based on the level of job demands and moderating resources. The present study aims to contribute to psychophysiological research by integrating vagally mediated heart rate variability (HRV) into the JD-R framework.Design and Methods: Using a sample of school teachers, we conducted an ambulatory assessment study to investigate HRV as (1) a state outcome measure of job demands and resources and (2) a trait moderator in the relationship between job demands and emotional exhaustion. In total, 101 participants wore an electrocardiogram device on two school days and rated their level of job demands (emotional demands and time pressure), job resources (control and support), and exhaustion six times a day. Based on 669 measurements, multilevel models of the 5-minute state HRV measure and emotional exhaustion were built.Results: The results supported the health-impairing effects of job demands on emotional exhaustion but not state HRV. There was no evidence of the moderating effects of job resources. Notably, the 48-hour trait HRV measure significantly buffered the effect of emotional demands on exhaustion.Conclusions: These findings highlight the stress-buffering potential of trait HRV as theoretical research extension and practical intervention goal.
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Schmid et al. (2020) conducted an observational in Job strain and emotional exhaustion (n=101). Job demands (emotional demands and time pressure) vs. Low job demands was evaluated on Emotional exhaustion (γ = 0.21, p=<0.01). High emotional demands and time pressure were positively associated with emotional exhaustion, while 48-hour trait heart rate variability significantly buffered the detrimental effect of emotional demands on exhaustion.
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