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Hydration assessment during cold-weather military field training exercises.
Arctic Med Res 1996; 55(1):20-6AM

Abstract

To quantify the magnitude of dehydration and to identify predictors of dehydration by utilizing changes in total body water (TBW), 24 male Marines were studied during an 8d moderately cold-weather (1-3 degrees C) training exercise. Training consisted of approximately 12 h/d of moderately intense activity. Variables examined included body composition, TBW, and various blood and urinary parameters indicative of hydration. Dietary food and fluid records were also maintained. Body composition changes were consistently with the high energy expenditure and insufficient energy intake. Despite a decrease in TBW, significant dehydration as assessed by blood and urinary parameters did not occur over the 8d period, therefore no relationships were found between TBW and any of the clinical indicators of dehydration. The change in TBW was reflective of a decrease in lean body mass. These data suggest that during cold-weather military field exercise, despite high activity levels and a negative energy balance, body fluid balance can be maintained when particular attention is paid to fluid intake.

Authors+Show Affiliations

US Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

8901164

Citation

O'Brien, C, et al. "Hydration Assessment During Cold-weather Military Field Training Exercises." Arctic Medical Research, vol. 55, no. 1, 1996, pp. 20-6.
O'Brien C, Freund BJ, Sawka MN, et al. Hydration assessment during cold-weather military field training exercises. Arctic Med Res. 1996;55(1):20-6.
O'Brien, C., Freund, B. J., Sawka, M. N., McKay, J., Hesslink, R. L., & Jones, T. E. (1996). Hydration assessment during cold-weather military field training exercises. Arctic Medical Research, 55(1), pp. 20-6.
O'Brien C, et al. Hydration Assessment During Cold-weather Military Field Training Exercises. Arctic Med Res. 1996;55(1):20-6. PubMed PMID: 8901164.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hydration assessment during cold-weather military field training exercises. AU - O'Brien,C, AU - Freund,B J, AU - Sawka,M N, AU - McKay,J, AU - Hesslink,R L, AU - Jones,T E, PY - 1996/1/1/pubmed PY - 1996/1/1/medline PY - 1996/1/1/entrez SP - 20 EP - 6 JF - Arctic medical research JO - Arctic Med Res VL - 55 IS - 1 N2 - To quantify the magnitude of dehydration and to identify predictors of dehydration by utilizing changes in total body water (TBW), 24 male Marines were studied during an 8d moderately cold-weather (1-3 degrees C) training exercise. Training consisted of approximately 12 h/d of moderately intense activity. Variables examined included body composition, TBW, and various blood and urinary parameters indicative of hydration. Dietary food and fluid records were also maintained. Body composition changes were consistently with the high energy expenditure and insufficient energy intake. Despite a decrease in TBW, significant dehydration as assessed by blood and urinary parameters did not occur over the 8d period, therefore no relationships were found between TBW and any of the clinical indicators of dehydration. The change in TBW was reflective of a decrease in lean body mass. These data suggest that during cold-weather military field exercise, despite high activity levels and a negative energy balance, body fluid balance can be maintained when particular attention is paid to fluid intake. SN - 0782-226X UR - https://www.unboundmedicine.com/medline/citation/8901164/Hydration_assessment_during_cold_weather_military_field_training_exercises_ L2 - https://medlineplus.gov/exerciseandphysicalfitness.html DB - PRIME DP - Unbound Medicine ER -