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Related Experiment Video

Updated: May 29, 2025

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Graded Walking Energetics under Cold Strain.

David P Looney, Erica A Schafer, Christopher L Chapman

¹Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY.

Medicine and Science in Sports and Exercise

|February 3, 2025

Summary

This summary is machine-generated.

The "steeper is cheaper" strategy, which suggests steeper routes minimize energy expenditure (Ṁ), is confirmed for walking in cold weather. Faster treadmill speeds at matched vertical inclines increased Ṁ, especially in colder temperatures.

Keywords:

ENERGY EXPENDITURE HIKING METABOLISM MILITARY TACTICAL ATHLETES

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Last Updated: May 29, 2025

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Area of Science:

Human physiology
Environmental science
Biomechanics

Background:

The

Purpose of the Study:

To investigate if the

Main Methods:

14 adults walked on a treadmill at varying speeds and inclines in 20°C, 10°C, and 0°C.
Metabolic rate (Ṁ) was measured to compare energy expenditure between different treadmill speeds at matched vertical speeds.
The Load Carriage Decision Aid (LCDA) metabolic model's predictions were compared against measured Ṁ.

Main Results:

Higher treadmill speeds at matched vertical speeds significantly increased metabolic rate (Ṁ) in all tested temperatures (p < 0.05).
The LCDA model accurately predicted Ṁ at 20°C and 10°C, but underestimated it at 0°C.

Conclusions:

Steeper, shorter routes are recommended to minimize metabolic rate (Ṁ) for walking in temperate to cold conditions.
The LCDA metabolic model is reliable for predicting Ṁ in lightly clothed individuals down to 10°C, with caution advised for colder temperatures.