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International Archives of Occupational and Environmental Health
Erschienen in:

10.01.2021 | Original Article

Heart rate response to alarm tones in firefighters

verfasst von: Rudi A. Marciniak, Cody J. Tesch, Kyle T. Ebersole

Erschienen in: International Archives of Occupational and Environmental Health | Ausgabe 5/2021

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Abstract

Objective

To examine cardiovascular responses to medical (MED) and fire (FIRE) alarm tones in firefighters.

Methods

Heart rate was collected throughout 24-h shifts (N = 41). Call logs were utilized post hoc to identify heart rate at the time the alarm sounded (TIMETONE), peak heart rate following the alarm (TIMEPEAK), and heart rate at the time of station departure (TIMEDEPART) for MED and FIRE calls. A 2X3 (TONE x TIME) split-plot mixed-model repeated-measures analysis of variance (ANOVA) and least significant differences tests examined the influence of tone type on heart rate, expressed as a percent of age estimated maximum. Bivariate Pearson correlations examined the relationship between body mass index (BMI) and TIMEPEAK and TIMEDEPART. An alpha of 0.05 determined statistical significance and Bonferroni Corrections were applied to post hoc comparisons (p < 0.017).

Results

Follow-up analyses for the significant 2 × 3 repeated-measures ANOVA (p = 0.035) indicated differences in heart rate for MED (p < 0.001) and FIRE (p < 0.001) where TIMETONE < TIMEPEAK, TIMETONE < TIMEDEPART, and TIMEPEAK > TIMEDEPART. There was a non-significant simple effect of time for MED and FIRE at TIMETONE (p = 0.259), but significant effects of tone type where FIRE > MED at TIMEPEAK (p < 0.001) and TIMEDEPART (p = 0.002). There was a significant small positive relationship between BMI and TIMEPEAK (p = 0.002) and TIMEDEPART (p < 0.001) for MED only.

Conclusions

Alarms increased heart rates to a greater extent in FIRE than MED calls. Higher BMI was related to greater heart rate responses in MED but was unrelated to FIRE response.
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Metadaten
Titel
Heart rate response to alarm tones in firefighters
verfasst von
Rudi A. Marciniak
Cody J. Tesch
Kyle T. Ebersole
Publikationsdatum
10.01.2021
Verlag
Springer Berlin Heidelberg
Erschienen in
International Archives of Occupational and Environmental Health / Ausgabe 5/2021
Print ISSN: 0340-0131
Elektronische ISSN: 1432-1246
DOI
https://doi.org/10.1007/s00420-020-01646-y

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