Frequency, intensity and duration of physical tasks performed by Australian rural firefighters during bushfire suppression
Phillips, Matthew, Netto, Kevin, Payne, Warren, Nichols, David, Lord, Cara, Brooksbank, Neil, Onus, Katrina, Jefferies, Sarah and Aisbett, Brad 2011, Frequency, intensity and duration of physical tasks performed by Australian rural firefighters during bushfire suppression, in Proceedings of Bushfire CRC & AFAC 2011 Conference Science Day, Bushfire Cooperative Research Centre, East Melbourne, Vic., pp. 205-213.
The current study combined, for the first time, video footage of individual firefighters wearing heart rate monitors and personal GPS units to quantify the frequency, duration and intensity of tasks performed by Australian rural fire crews when. suppressing bushfires. Across the four fireground 'shifts', the firefighters performed 34 distinct fireground tasks. Per shift, the task frequency ranged from once (raking fireline in teams, carrying a quick fill pump) to 103 times {lateral repositioning of a 38-mm charged firehose) .. The tasks lasted between 4 ± 2 s (bowling out 3-8-mm firehose) and 461 ± 387 s (raking fireline in teams). The task intensity~ as measured by average heart rate ranged between 97 ± 16 beats·min-1 (55.7 ± 8.7. %HRmax) and 157 ± 15 beats·min-1 (86.2 ± 10.8 %HRmax)· The tasks were performed a speeds that ranged from 0.12 ± 0.08 m·s-1 (manual hose retraction of 38-mm charged firehose) to 0.79 ± 0.40 m·s-1 (carrying a 38-mm coiled hose). Tasks found to be simultaneously frequent, long and intense (or two of these three) are likely to form the basis for job-specific testing of Australian rural firefighters suppressing bushfires.
Notes
The science day was the final day of The AFAC & Bushfire CRC annual conference held from 29th August to 1st September 2011
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