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The impact of carrying load on physical performance during ascending evacuation movement

Velasco, Alejandra ; Halder, Amitava LU ; Kuklane, Kalev LU and Ronchi, Enrico LU orcid (2020) In Fire and Materials
Abstract
This study investigates how ascending movement is affected by carrying load during a stair‐climbing motion. The methods adopted are based on exercise physiology and fire safety engineering. Experiments with 21 volunteers with mean (SD) age of 27 (4) have been carried out on a stair machine with or without carrying a mass of 8 kg, typical weight of a hand luggage or the average weight of an 8‐months old infant. Oxygen uptake (V˙O2), heart rate (HR), metabolic rate (M), and perceived exertion results showed a decrease in performance in the scenario with additional load. Participants climbed an average of 92 m without carrying a load, in comparison to 84 m when they were carrying it in a 5 minutes task. An average increase of 4% in the V˙O2... (More)
This study investigates how ascending movement is affected by carrying load during a stair‐climbing motion. The methods adopted are based on exercise physiology and fire safety engineering. Experiments with 21 volunteers with mean (SD) age of 27 (4) have been carried out on a stair machine with or without carrying a mass of 8 kg, typical weight of a hand luggage or the average weight of an 8‐months old infant. Oxygen uptake (V˙O2), heart rate (HR), metabolic rate (M), and perceived exertion results showed a decrease in performance in the scenario with additional load. Participants climbed an average of 92 m without carrying a load, in comparison to 84 m when they were carrying it in a 5 minutes task. An average increase of 4% in the V˙O2 and the HR was found in the experiments with the additional mass. The strongest correlating variables observed were M and the vertical distance covered. Differences in perceived exertion occurred after four minutes into the exercise, with higher values in the case with additional load. These results show the need for considering the negative impact of carrying load while designing infrastructures in case of ascending evacuation and while developing evacuation modelling tools. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Fire and Materials
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85083555213
ISSN
1099-1018
DOI
10.1002/fam.2844
project
Physical work capacity and biomechanical aspects as limiting factors in challenging environments
language
English
LU publication?
yes
id
62515120-e31f-4d04-a2de-6352a9a26de5
date added to LUP
2020-04-28 13:47:57
date last changed
2023-09-10 01:59:29
@article{62515120-e31f-4d04-a2de-6352a9a26de5,
  abstract     = {{This study investigates how ascending movement is affected by carrying load during a stair‐climbing motion. The methods adopted are based on exercise physiology and fire safety engineering. Experiments with 21 volunteers with mean (SD) age of 27 (4) have been carried out on a stair machine with or without carrying a mass of 8 kg, typical weight of a hand luggage or the average weight of an 8‐months old infant. Oxygen uptake (V˙O2), heart rate (HR), metabolic rate (M), and perceived exertion results showed a decrease in performance in the scenario with additional load. Participants climbed an average of 92 m without carrying a load, in comparison to 84 m when they were carrying it in a 5 minutes task. An average increase of 4% in the V˙O2 and the HR was found in the experiments with the additional mass. The strongest correlating variables observed were M and the vertical distance covered. Differences in perceived exertion occurred after four minutes into the exercise, with higher values in the case with additional load. These results show the need for considering the negative impact of carrying load while designing infrastructures in case of ascending evacuation and while developing evacuation modelling tools.}},
  author       = {{Velasco, Alejandra and Halder, Amitava and Kuklane, Kalev and Ronchi, Enrico}},
  issn         = {{1099-1018}},
  language     = {{eng}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Fire and Materials}},
  title        = {{The impact of carrying load on physical performance during ascending evacuation movement}},
  url          = {{http://dx.doi.org/10.1002/fam.2844}},
  doi          = {{10.1002/fam.2844}},
  year         = {{2020}},
}