SODIUM AND WATER BALANCE DURING ENDURANCE ACTIVITY IN TRAINED ATHLETES

这个子项目是许多利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 我们的目的是测量和比较在不同的水合状态下，总的身体水分和体重的变化。随后，我们的目标是比较在高温下长时间跑步时，正常水合（完全替代汗液流失）和脱水（部分替代汗液流失）的生理和体温调节作用（具体目标2）。我们还旨在比较水分充足和脱水对年轻运动员长期跑步表现的影响。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. We aim to measure and compare changes in total body water and body weight during various hydration states. Subsequently, we aim to compare the physiological and thermoregulatory effects of euhydration (fully replace sweat loss) and dehydration (partially replace sweat loss) during prolonged running in the heat (Specific Aim 2). We also aim to compare the effects of euhydration and dehydration on prolonged running performance in young endurance-trained athletes.