Energy Metabolism in Cold-Stressed Females: Implications for Predictive Modeling. Annual Report for 1999


  1. Jacobs, I.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Army Medical Research and Materiel Command, Fort Detrick MD (US)
This document is a progress report which describes the results from the third of a series of studies carried out to clarify the extent of gender-related differences in physiological responses to cold stress, and to evaluate the potential implications for survival time in the cold. One purpose of the study was to document the relative intensity of muscular contraction during shivering in a variety of skeletal muscle groups chosen to represent both central (pectoralis major (PE), rectus abdominis (AB)), and distal (biceps brachii (BB), brachioradialis (BR), rectus femoris (FE), and gastrocnemius (GA)) body regions in order to clarify the extent of the contribution of various body parts to total heat production during shivering. Another purpose was to determine the association in females between the observed increase in muscle electrical activity and the increase in M. Fifteen females, (28 + or - 6 y; 162.8 + or - 4.8 cm; 63.9 + or - 8.7 Kg, 23.2 + or - 4.7% fat) of normal fitness were recruited. Electromyography was used to monitor muscle electrical activity during a two-hour cold air exposure and the EMG was compared to the EMG that was generated during maximal voluntary contractions of the same muscle groups so that the relative intensity of muscle contraction during shivering could be quantified. TRUNCATED
Gender invariant;Prediction models;Womens health
Report Number
DCIEM-ECR-2000-017 — External Client Report (Annual Report)
Date of publication
01 Nov 1999
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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