Physiological stress in flat and uphill walking with different backpack loads in professional mountain rescue crews.

Details

• Personal Author:
  Cámara J ; Coca, Aitor ; Mejuto G ; Pinedo-Jauregi A ; Quinn T
• Description:
  This study aimed to determine the interactive physiological effect of backpack load carriage and slope during walking in professional mountain rescuers. Sixteen mountain rescuers walked on a treadmill at 3.6 km/h for 5 min in each combination of three slopes (1%, 10%, 20%) and five backpack loads (0%, 10%, 20%, 30%, and 40% body weight). Relative heart rate (%HRmax), relative oxygen consumption (%VO2max), and rating of perceived exertion (RPE, Borg 1-10 scale) were compared across conditions using two-way ANOVA. Significant differences in %VO2max, %HRmax, and RPE across slopes and loads were found where burden increased directly with slope and load (main effect of slope, p < 0.001 for all; main effect of load, p < 0.001 for all). Additionally, significant slope by load interactions were found for all parameters, indicating an additive effect (p < 0.001 for all). Mountain rescuers should consider the physiological interaction between slope and load when determining safe occupational walking capacity. [Description provided by NIOSH]
• Subjects:
  Body Weight Cardiovascular System Emergency Responders Occupational Health Safety
• Keywords:
  Author Keywords: Load Carriage; Physiology; Physical Work Capacity; Backpack And Slope Walking Physiological Stress; Physiological Effects; Load Monitoring; Rescue Workers; Weight Factors; Body Weight; Heart Rate; Oxygen Levels; Physical Capacity; Physical Fitness;
• ISSN:
  0003-6870
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  103
• NIOSHTIC Number:
  nn:20065212
• Citation:
  Appl Ergon 2022 Sep; 103:103784
• Contact Point Address:
  Aitor Pinedo-Jauregi, Department of Physical Education and Sport Sciences, Faculty of Education and Sport, (UPV/EHU) Lasarte, 71 01007 Vitoria-Gasteiz, Álava. Spain
• Email:
  aitor.pinedo@ehu.eus
• Federal Fiscal Year:
  2022
• Peer Reviewed:
  True
• Source Full Name:
  Applied Ergonomics
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5770d68449639d89e1a2cbe678f10d97128bf15cc74c0c3d2991b3a257c4ce3d2499d339d4dc149cd25855e37b8b441b5fdafa7144a91654383d4520c4739da4
• Download URL:
  https://stacks.cdc.gov/view/cdc/249371/cdc_249371_DS1.pdf
• File Type:
  [PDF - 528.66 KB ]