Physiological stress in flat and uphill walking with different backpack loads in professional mountain rescue crews
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Fecha
2022-04-27
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Elsevier Ltd.
Resumen
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.
Palabras clave
Backpack and slope walking
Load carriage
Physical work capacity
Physiology
Load carriage
Physical work capacity
Physiology
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Cita
Pinedo-Jauregi, A., Quinn, T., Coca, A., Mejuto, G., & Cámara, J. (2022). Physiological stress in flat and uphill walking with different backpack loads in professional mountain rescue crews. Applied Ergonomics, 103. https://doi.org/10.1016/J.APERGO.2022.103784