caa a22 4500 469054867 CHVBK 20180323132840.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00705069 doi (NATIONALLICENCE)springer-10.1007/BF00705069 Physiological strain due to load carrying in heavy footwear [Elektronische Daten] [M. Holewijn, R. Hens, L. Wammes] Summary: To determine the effects of wearing heavy footwear on physiological responses five male and five female subjects were measured while walking on a treadmill (4, 5.25, and 6.5 km·h−1) with different external loads (barefooted, combat boots, and waist pack). While walking without an external load the oxygen uptake, as a percentage of maximal oxygen uptake (% $$\dot V$$ O2max) of the men increased from 25% $$\dot V$$ O2max at 4 km·h−1 to 31% $$\dot V$$ O2max at 5.25 km·h−1 and to 42% $$\dot V$$ O2max at 6.5 km·h−1. The women had a significantly higher oxygen uptake of 30%, 40%, and 55% $$\dot V$$ O2max, respectively. In the most strenuous condition, walking at 6.5 km·h−1 with combat boots and waist pack (12 kg), the oxygen uptake for the men and women amounted to 53% and 75% $$\dot V$$ O2max, respectively. The heart rate showed a similar response to the oxygen uptake, the women having a heart rate which was 15-40 beats·min−1 higher than that of the men, depending on the experimental condition. The perceived exertion was shown to be greatly dependent on the oxygen uptake. From the results a regression formula was calculated predicting the oxygen uptake depending on the mass of the footwear, walking speed and body mass. It was concluded that the mass of footwear resulted in an increase in the energy expenditure which was a factor 1.9-4.7 times greater than that of a kilogram of body mass, depending on sex and walking speed. Springer-Verlag, 1992 Energy cost nationallicence Sex difference nationallicence Footwear nationallicence Perceived exertion nationallicence Regression formula nationallicence Holewijn M. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut Hens R. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut Wammes L. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/2(1992-03-01), 129-134 0301-5548 65:2<129 1992 65 421 https://doi.org/10.1007/BF00705069 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00705069 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Holewijn M. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut NATIONALLICENCE 700 1- Hens R. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut NATIONALLICENCE 700 1- Wammes L. TNO Institute for Perception, Thermal Physiology Research Group, Kampweg 5, NL-3769, DE Soesterberg, The Netherlands aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/2(1992-03-01), 129-134 0301-5548 65:2<129 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer