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The Effects of Cranial Cooling During Uncompensable Heat Stress in Fire Protective Ensemble

  • Author / Creator
    Scarlett, Michael Philip Brown
  • This experiment investigated the physiological effects of cranial cooling during recovery from fully-encapsulated exercise with fire protective ensemble. On two separate days, twelve males completed 2x20 minutes of treadmill exercise (EX1 and EX2) at 65 ± 4 % of VO2peak, each followed by 20 minutes of encapsulated recovery (R1 and R2). During recovery, either active (AC: hood perfused with 10°C water) or passive (PC: head exposed to ambient conditions) conditions were randomly assigned. Core temperature (Tc) increased significantly and by a similar amount from rest to the end of EX2 in both conditions. Both AC and PC conditions led to a similar decrease in core temperature during R1. However, a significant interaction between conditions occurred during R2 (p = 0.035) which suggests that AC was more effective than PC at the end of the protocol when core temperature was highest. Despite decreases in Tc during recovery, heat storage was cumulative.

  • Subjects / Keywords
  • Graduation date
    2014-06
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3G39N
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Physical Education and Recreation
  • Supervisor / co-supervisor and their department(s)
    • Dr. Stewart Petersen, University of Alberta, Faculty of physical Education and Recreation
  • Examining committee members and their departments
    • Dr. Michael Stickland, University of Alberta, Faculty of Medicine
    • Dr. Stewart Petersen, University of Alberta, Faculty of physical Education and Recreation
    • Dr. Stephen Cheung, Brock University, Faculty of Kinesology
    • Dr. Dan Syrotuik, University of Alberta, Faculty of physical Education and Recreation