Data from: Ice vests extend physiological work time while wearing explosive ordnance disposal protective clothing in hot and humid conditions
Data files
Sep 24, 2024 version files 14.70 KB
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EOD_physiological_data.csv
12.76 KB
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EOD_work_time_data.csv
218 B
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README.md
1.72 KB
Abstract
Explosive ordnance disposal (EOD) technicians may be required to work in hot humid environments while wearing heavy protective clothing. We investigated the ability of an ice vest to attenuate physiological strain and subsequently extend work tolerance.
Eight male participants (24.3±4.1 yr, 51.3±4.1 mL·kg-1·min-1) walked (4.5 km·h-1) in simulated hot and humid conditions (35 °C; 50% relative humidity). Participants wore either an EOD suit (CON) or EOD and ice vest (IV). Heart rate, core and skin temperature were recorded continuously.
Participants walked longer in IV compared to CON (8.1±7.4 min, p<.05). Over 90% of trials were terminated based on participants reaching 90% of their maximum heart rate. IV resulted in cooled skin (p<.001) and a physiologically negligible change in core temperature (p<.001). A condition by time interaction was identified for heart rate (p<.001), with a lower rate of rise in the IV condition.
The cardiovascular inefficiency that limited performance was attenuated in the IV condition. Heat loss from the periphery was facilitated by the ice vest, thus the observed reduction in heart rate may reflect the preservation of central blood volume. The results identify the efficiency of a simple, inexpensive ice vest to assist EOD technicians working in the heat.
README: Data from: Ice vests extend physiological work time while wearing explosive ordnance disposal protective clothing in hot and humid conditions
Authors: Kate P Hutchins, Matthew J Maley, Aaron J E Bach, Geoffrey M Minett, Kelly L Stewart, Ian B Stewart
This study aimed to investigate the effect of an ice vest on physiological responses and work capacity while in an EOD ensemble in simulated conditions. It was hypothesised that the ice vest would alleviate the physiological strain and extend work time while wearing the EOD ensemble in hot, humid conditions.
The authors have provided the raw physiological data (EOD_physiological_data.csv) and the work time data alongside the termination criteria (EOD_work_time_data.csv).
Description of the data and file structure
Measures in EOD_physiological_data.csv
Work Time (minutes) - abbreviated to 'Time'
Core (rectal) Temperature (°C) - abbreviated to 'Tc'
Mean Skin Temperature (°C) - abbreviated to 'Tsk'
Heart Rate (bpm) - abbreviated to 'HR'
Participant Number - abbreviated to 'ID'
Conditions in EOD_physiological_data.csv and EOD_work_time_data.csv
Explosive Ordnance Disposal - abbreviated to 'EOD' and denoted as Condition ID number '1'
Explosive Ordnance Disposal and Ice Vest - abbreviated to 'EOD+IV' and denoted as Condition ID number '2'
Termination Criteria in EOD_work_time_data.csv
90% of Heart Rate Maximum - abbreviated to 'HR'
Walking for 60 minutes - abbreviated to 'Time'
Sharing/Access information
Data are original from human data collection and not sourced. Data are only available on Dryad Repository.
Code/Software
All data analysis was undertaken in R (version 4.0.3).