当前位置： SCI文献检索 > MILITARY MEDICINE期刊下所有文献 > Update: Efficacy of Military Fluid Intake Guidance.

Update: Efficacy of Military Fluid Intake Guidance.

Abstract：

BACKGROUND:Fluid intake during military training is prescribed based on the interactions among work rates, environmental conditions, and uniform configurations. The efficacy of this guidance has not been empirically assessed in over a decade. To determine the acceptability of the fluid intake guidance, sweat losses were measured in a variety of conditions with modern uniform/body armor configurations and were then compared to prescribed fluid intakes for each condition (workload, environment, clothing). METHODS:Whole body sweat losses of 324 Soldiers and 14 model simulations were measured under a variety of work intensities ((Watts) easy, moderate, hard), work durations (2-25 h), environmental conditions (White-Black flag), and uniform configurations (including Army Combat Uniform and body armor). Whole body sweat losses were then calculated relative to 4 h drinking guidance and in accordance with TB MED 507 recommended work/rest ratios. The differences between the prescribed fluid intake and sweat loss were calculated and expressed as a percent loss or gain of body weight. Values within a threshold of ±2% body water flux (BWF) were deemed an acceptable conservative starting point for performance and health concerns. FINDINGS:Values within ±2% BWF numbered 309/338; 25 of 338 observations exceeded the +2% BWF while 4 of 338 observations exceeded the -2% BWF. When total fluid restriction was simulated, all experienced body weight loss with 151 of 338 observations exceeding the -2% BWF. DISCUSSION:When calculated using actual measured sweating rates from the laboratory and model simulations, current fluid intake guidance appears to predict with 91.4% accuracy the volume of fluid required to maintain a proper euhydrated state (±2%) during 4 h of exercise. Simulations of total fluid restriction support the necessity for fluid intake guidance so that the Warfighter's performance does not degrade. It is recommended that the current military fluid intake guidance focuses on methods for accurately tracking fluid intakes.

journal_name

Mil Med

journal_title

Military medicine

authors

Luippold AJ,Charkoudian N,Kenefick RW,Montain SJ,Lee JKW,Teo YS,Cheuvront SN

doi

10.1093/milmed/usy066

subject

Has Abstract

pub_date

2018-09-01 00:00:00

pages

e338-e342

issue

9-10

eissn

0026-4075

issn

1930-613X

pii

4975463

journal_volume

183

pub_type

杂志文章

在线工具

Update: Efficacy of Military Fluid Intake Guidance.