Assessment of the Relationship Between Rucksack Load and Standing Metabolic Rate
Abstract
There is a lack of quantitative data describing the impact that added load has on an individual's standing metabolic rate. Fourteen male US Army Soldiers (age 21 plus or minus 2 years; height 174 plus or minus 7 cm; body mass 73 10 kg) stood 6 minutes with four loads (0, 22, 44, and 66 percent body mass) while wearing a respirator mask connected to a metabolic cart. Oxygen uptake was not significantly different between the 0 percent and 22 percent BM loads (p = 0.294) but was significantly higher with the 44 percent BM load versus both 0 percent BM and 22 percent BM (p < 0.05) loads. The 66 percent BM rucksack induced significantly greater oxygen uptake than the 0, 22, and 44 percent BM (p < 0.05). Light rucksack loads ( less than or equal to 22 percent body mass) have a negligible effect on standing metabolic rate that may not be physiologically important. However, heavier rucksack loads ( greater than or equal to 44 percent body mass) elicit more pronounced metabolic responses that cannot be overlooked.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2020
- Accession Number
- AD1098483
Entities
People
- Adam W Potter
- Andrew S. Marrero
- Anthony J. Karis
- David P. Looney
- Diana P. Sanford
- Elizabeth M. Doughty
- Holly L. Mcclung
- Peter S. Figueiredo
- Sai V. Vangala
- William R. Santee
Organizations
- United States Army Research Institute of Environmental Medicine