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Energy Cost of Walking in Four Types of Snowshoes.


ADA318339

Publication Date 1996
Personal Author Knapik, J. J.; Hickey, C. A.; Ortega, S. V.; Nagel, J. R.; dePontbriand, R.
Page Count 47
Abstract Energy cost was examined while four Marines walked at 4 km/hr on an open field with each of four snowshoes. Snowshoes were the Pride Assault, Montana, British Assault, and the U.S. Army Standard. The grade of the field was about 2.4% and the Marine walked once downhill and once uphill with each snowshoe. Expired respiratory gases were collected continuously during each walk. On the downhill portion of the course, average + standard deviation (SD) V02 values were l.25 +/- 0.l3, 1.46 +/- 0.11, 1.31 +/- 0.13, and 1.22 +/- 0.20 1/min for the Pride, Montana, British, and Standard snowshoes, respectively (p=0.01); the Pride and Standard snowshoes had significantly lower energy cost than the Montana (p=0.05). On the uphill portion of the course, average +/- SD VO2 values were 1.58 +/- 0.12, 1. 7 +/- 80.14, 1.62 +/- 0.21, and 1.5 +/- 10.06 1/min for Pride, Montana, British, and Standard snowshoes, respectively (p=0.06). Data suggested that several characteristics may be favorable from an energy cost perspective: (1) a foot hinge and binding system that allows the snowshoe to be dragged across the snow, (2) an upturned front that pushes snow away and allows a more horizontal displacement of the snowshoe during locomotion, and (3) a lower mass-to-surface-area ratio. Further research will be necessary to determine the relative importance ot these design characteristics, given the small number of subjects.
Keywords
  • Walking
  • Marine corps personnel
  • Standard deviation
  • Snowshoes
  • Low costs
  • Assault
  • Displacement
  • Energy
  • Costs
  • Snow
  • Low energy
  • Standards
  • Horizontal orientation
  • Army operations
  • Great britain
  • Montana
  • Feet
  • Hinges
  • Breathing gases
  • Locomotion
Source Agency
  • Non Paid ADAS
NTIS Subject Category
  • 70D - Personnel Management, Labor Relations & Manpower Studies
  • 88D - Personnel
  • 92A - Job Training & Career Development
  • 57A - Anatomy
  • 57S - Physiology
  • 72F - Statistical Analysis
  • 95G - Protective Equipment
Corporate Authors Army Research Lab., Aberdeen Proving Ground, MD.
Document Type Technical Report
Title Note Final rept.
NTIS Issue Number 199708
Energy Cost of Walking in Four Types of Snowshoes.
Energy Cost of Walking in Four Types of Snowshoes.
ADA318339

  • Walking
  • Marine corps personnel
  • Standard deviation
  • Snowshoes
  • Low costs
  • Assault
  • Displacement
  • Energy
  • Costs
  • Snow
  • Low energy
  • Standards
  • Horizontal orientation
  • Army operations
  • Great britain
  • Montana
  • Feet
  • Hinges
  • Breathing gases
  • Locomotion
  • Non Paid ADAS
  • 70D - Personnel Management, Labor Relations & Manpower Studies
  • 88D - Personnel
  • 92A - Job Training & Career Development
  • 57A - Anatomy
  • 57S - Physiology
  • 72F - Statistical Analysis
  • 95G - Protective Equipment
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