Physiological and psychological responses in Fire Instructors to heat exposures

Peter Watt, Ashley Willmott, Neil Maxwell, Nicholas Smeeton, Eleanor Watt, Alan Richardson

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Aim: Fire Service Instructors (FSI) are exposed to many repeated periods of high environmental temperatures when training firefighters. Such repeated exposures will impose significant strains on the function of instructors. We aimed to measure the effects of a training programme including repeated exposures to heat, termed “Wears” in the fire service, on the physiological, psychological some immunological markers of Fire Service Instructors. Methods: Six FSI and six physiologically matched controls completed blood and cardiovascular tests pre and post a 4wk heat instruction training block, controls completed the tests only. FSI were given a 7wk period of no heat exposure prior to starting the training. Physiological and perceptual measures were taken pre and post the first and last Wear of the 4wk training protocol. Results: There were acute effects of a Wear on core temperature and physiological strain index, as well as measures of fatigue. The acute exposure to heat during a Wear led to a consistent decrease in CRP (-10 to -40%), increased IL6 concentrations (33 to 45%) as well as increased RPE and TSS. Over the training programme significantly lower quantities of white cells, particularly neutrophils, leucocytes and monocytes were found in the FSI group. Between the start and the end of the 4 week training programme the FSI showed a significantly greater physiological strain index (PSI) to the Wears, which nearly doubled from 2.5 to 4.7 (p<0.05). Conclusion: Physiological and psychological measures indicate that FSI may be experiencing symptoms and changes to their health consistent with an overtraining type condition.
Original languageEnglish
Pages (from-to)106-114
Number of pages9
JournalJournal of Thermal Biology
Volume58
DOIs
Publication statusPublished - 22 Apr 2016

Fingerprint

Hot Temperature
Psychology
Education
Firefighters
Temperature
Hematologic Tests
Fatigue
Monocytes
Interleukin-6
Neutrophils
Leukocytes
Health

Bibliographical note

© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Immune function
  • Inflammation, Fire service
  • Heat exposure
  • Overtraining

Cite this

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title = "Physiological and psychological responses in Fire Instructors to heat exposures",
abstract = "Aim: Fire Service Instructors (FSI) are exposed to many repeated periods of high environmental temperatures when training firefighters. Such repeated exposures will impose significant strains on the function of instructors. We aimed to measure the effects of a training programme including repeated exposures to heat, termed “Wears” in the fire service, on the physiological, psychological some immunological markers of Fire Service Instructors. Methods: Six FSI and six physiologically matched controls completed blood and cardiovascular tests pre and post a 4wk heat instruction training block, controls completed the tests only. FSI were given a 7wk period of no heat exposure prior to starting the training. Physiological and perceptual measures were taken pre and post the first and last Wear of the 4wk training protocol. Results: There were acute effects of a Wear on core temperature and physiological strain index, as well as measures of fatigue. The acute exposure to heat during a Wear led to a consistent decrease in CRP (-10 to -40{\%}), increased IL6 concentrations (33 to 45{\%}) as well as increased RPE and TSS. Over the training programme significantly lower quantities of white cells, particularly neutrophils, leucocytes and monocytes were found in the FSI group. Between the start and the end of the 4 week training programme the FSI showed a significantly greater physiological strain index (PSI) to the Wears, which nearly doubled from 2.5 to 4.7 (p<0.05). Conclusion: Physiological and psychological measures indicate that FSI may be experiencing symptoms and changes to their health consistent with an overtraining type condition.",
keywords = "Immune function, Inflammation, Fire service, Heat exposure, Overtraining",
author = "Peter Watt and Ashley Willmott and Neil Maxwell and Nicholas Smeeton and Eleanor Watt and Alan Richardson",
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month = "4",
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Physiological and psychological responses in Fire Instructors to heat exposures. / Watt, Peter; Willmott, Ashley; Maxwell, Neil; Smeeton, Nicholas; Watt, Eleanor; Richardson, Alan.

In: Journal of Thermal Biology, Vol. 58, 22.04.2016, p. 106-114.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Physiological and psychological responses in Fire Instructors to heat exposures

AU - Watt, Peter

AU - Willmott, Ashley

AU - Maxwell, Neil

AU - Smeeton, Nicholas

AU - Watt, Eleanor

AU - Richardson, Alan

N1 - © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2016/4/22

Y1 - 2016/4/22

N2 - Aim: Fire Service Instructors (FSI) are exposed to many repeated periods of high environmental temperatures when training firefighters. Such repeated exposures will impose significant strains on the function of instructors. We aimed to measure the effects of a training programme including repeated exposures to heat, termed “Wears” in the fire service, on the physiological, psychological some immunological markers of Fire Service Instructors. Methods: Six FSI and six physiologically matched controls completed blood and cardiovascular tests pre and post a 4wk heat instruction training block, controls completed the tests only. FSI were given a 7wk period of no heat exposure prior to starting the training. Physiological and perceptual measures were taken pre and post the first and last Wear of the 4wk training protocol. Results: There were acute effects of a Wear on core temperature and physiological strain index, as well as measures of fatigue. The acute exposure to heat during a Wear led to a consistent decrease in CRP (-10 to -40%), increased IL6 concentrations (33 to 45%) as well as increased RPE and TSS. Over the training programme significantly lower quantities of white cells, particularly neutrophils, leucocytes and monocytes were found in the FSI group. Between the start and the end of the 4 week training programme the FSI showed a significantly greater physiological strain index (PSI) to the Wears, which nearly doubled from 2.5 to 4.7 (p<0.05). Conclusion: Physiological and psychological measures indicate that FSI may be experiencing symptoms and changes to their health consistent with an overtraining type condition.

AB - Aim: Fire Service Instructors (FSI) are exposed to many repeated periods of high environmental temperatures when training firefighters. Such repeated exposures will impose significant strains on the function of instructors. We aimed to measure the effects of a training programme including repeated exposures to heat, termed “Wears” in the fire service, on the physiological, psychological some immunological markers of Fire Service Instructors. Methods: Six FSI and six physiologically matched controls completed blood and cardiovascular tests pre and post a 4wk heat instruction training block, controls completed the tests only. FSI were given a 7wk period of no heat exposure prior to starting the training. Physiological and perceptual measures were taken pre and post the first and last Wear of the 4wk training protocol. Results: There were acute effects of a Wear on core temperature and physiological strain index, as well as measures of fatigue. The acute exposure to heat during a Wear led to a consistent decrease in CRP (-10 to -40%), increased IL6 concentrations (33 to 45%) as well as increased RPE and TSS. Over the training programme significantly lower quantities of white cells, particularly neutrophils, leucocytes and monocytes were found in the FSI group. Between the start and the end of the 4 week training programme the FSI showed a significantly greater physiological strain index (PSI) to the Wears, which nearly doubled from 2.5 to 4.7 (p<0.05). Conclusion: Physiological and psychological measures indicate that FSI may be experiencing symptoms and changes to their health consistent with an overtraining type condition.

KW - Immune function

KW - Inflammation, Fire service

KW - Heat exposure

KW - Overtraining

U2 - 10.1016/j.jtherbio.2016.04.008

DO - 10.1016/j.jtherbio.2016.04.008

M3 - Article

VL - 58

SP - 106

EP - 114

JO - Journal of Thermal Biology

JF - Journal of Thermal Biology

SN - 0306-4565

ER -