Antarctica on foot: the energy expended to walk, ski and man-haul
- Halsey, L. G. Department of Life Sciences, University of Roehampton, London, UK
- Lambert, Robert Department of Orthopaedic Surgery, Royal Infirmary of Edinburgh, UK
- Collins, P. Department of Life Sciences, University of Roehampton, London, UK
- Newnham, A. Department of Life Sciences, University of Roehampton, London, UK
- Kumar, Alexander Department of Physiologie, University of Fribourg, Switzerland
- O’Driscoll, C. Department of Life Sciences, University of Roehampton, London, UK
- Stroud, M. A. National Institute for Health Research Biomedical Research Centre in Nutrition, Southampton University Hospitals, UK
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28.10.2015
Published in:
- Polar Biology. - 2016, vol. 39, no. 4, p. 627-637
English
Polar exploration often involves travelling on foot and thus is physically intensive, with long-term excursions typically resulting in weight loss. Few studies have investigated the energy expended under such circumstances. Here, we present a range of prediction equations for estimating metabolic rate from heart rate or accelerometry data for specific activities including skiing and man-hauling which can be applied to either short- or long-term excursions. We also use some of these equations to estimate the energy expended undertaking various activities by a team of explorers while attempting to traverse the Antarctic continent during the austral winter of 2013 (as part of the White Mars Project during The Coldest Journey). Calibration equations based on either accelerometry data (from which overall dynamic body acceleration, ODBA, is derived) or heart rate showed good relationships with rate of oxygen consumption, particularly when person height was included. Periods of skiing and man- hauling on The Coldest Journey were estimated to be more energetically demanding (30.0 and 31.1 kJ min−1, respectively) than walking (24.9 kJ min−1), or other outdoor work (21.9 kJ min−1). Estimates of energy expenditure during The Coldest Journey were similar to measures obtained in previous, comparative scenarios. We hope that future expeditions to Antarctica will use these prediction equations to further our understanding of the energy costs of exploring Antarctica and the nutritional requirements needed to guard against emaciation.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Médecine
- Language
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- English
- Classification
- Biological sciences
- License
- License undefined
- Identifiers
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- RERO DOC 261140
- DOI 10.1007/s00300-015-1818-5
- Persistent URL
- https://folia.unifr.ch/unifr/documents/305213
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