Sweat capture using a novel wearable epifluidic device
Abstract
Abstract:The National Defense Authorization Act for the Fiscal Year 2019 (NDAA FY19, Public Law 115-232, sec. 322 a, b1-5), came to conclude that there is a need to describe the limitations that exist and to expand on cold weather capabilities across the services. In addition to the potential threats of cold-weather environments, alterations in atmospheric pressure, such as those experienced u ndersea further exacerbate the stresses imposed on the human body. Whereas these multifactorial stressors or threats are generally m itigated in recreational athletes, through behavioral changes (e.g. avoidance of diving in cold-water), they may not be as readily a voided in occupational settings experienced by U.S. armed service members. While the adverse effects of fluid loss during physical exertion in the heat are well documented [rev. in [1]]; less is understood concerning the physical and cognitive effects of cold wea ther exposure [2, 3]. Cold-induced diuresis (CID), reduced voluntary fluid intake, reduced thirst sensitivity, and poor access to wa ter can all lead to fluid loss in cold-weather operational environments [2]. Moreover, increased hydrostatic pressure, such as that experienced undersea, has been linked to increased diuresis and reduced plasma volume during static thermoneutral and cold-water imm ersion [4]. Similarly, decreased atmospheric pressure, such as that experienced at altitude, also reduces plasma volume [5]. However , these causes of fluid loss and reduced performance are oftentimes overlooked because individuals are not perceptually aware of the physiological stress, sweating, and thirst that are typically associated with fluid loss; which ultimately increases their risk of injury, as well as, reduced physical and cognitive capacity. Equally important to understanding fluid loss is monitoring electrolyt es present and critical for maintenance of hydration as well as ability to exercise via maintenance of resting membrane potentials o f nerves that innervate skeletal muscle so that additional action potentials maybe propagated to stimulate muscle contraction. Thus, the overall purpose of the study is to test and evaluate a novel electrolyte dive patch (EDV) aimed at quantifying electrolyte loss during diving.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 07, 2021
- Source ID
- N000142112917
Entities
People
- Ki Chon
Organizations
- Office of Naval Research
- United States Navy
- University of Connecticut