Expanded Prediction Equations of Human Sweat Loss and Water Needs

摘要

The Institute of Medicine expressed a need for improved sweating rate (m'sw) prediction models that calculate hourly and daily water needs based on metabolic rate, clothing, and environment. More than 25 years ago, the original Shapiro prediction equation (OSE) was formulated as m'sw (g*m-2*h-11) +27.9 Ereq*(Emax-)0.455, where Ereq is required evaporative heat loss and Emax is maximum evaporative power of the environment; OSE was developed for a limited set of environments, exposures times, and clothing systems. Recent evidence shows that OSE often overpredicts fluid needs. Our study developed a corrected OSE and a new m'sw prediction equation by using independent data sets from a wide range of environmental conditions, metabolic rates rest to.