Benefits of Respiratory Heat and Moisture Exchangers during Cold Exposures
DEFENCE AND CIVIL INST OF ENVIRONMENTALMEDICINE DOWNSVIEW (ONTARIO)
Pagination or Media Count:
The purpose of this paper was to serve as a brief literature review overviewing the current state of knowledge pertaining to respiratory heat and moisture exchangers HME s. Recommendations were extracted from the review with the intention of informing the Dwyer Hill Training Center so that an informed decision could be made regarding further laboratory testing of HMEs as well as setting policy regarding the use of HMEs as an ergogenic aid for the Canadian Forces CF. Detailed for the reader were the general physical properties and mechanism of function of most modem HMEs, as well as their application to respiratory heat and moisture retention, reduction of cold andor exercise induced bronchoconstriction, and medical environments. Although the majority of the papers reviewed reported positive findings-with the only real challenges coming from the medical community-no hard evidence was found to support the use of HMEs as an ergogenic aid in the reduction of respiratory heat and moisture loss. However, there may be some merit for the use of HMEs as performance enhancers by those individuals who are predisposed to respiratory complications that are further aggravated by cold andor exercise exposure. In light of the evidence provided by this review, it is the recommendation of the authors that further more specific and thorough testing be commissioned to evaluate the heat and moisture sparing properties of HME 5 and their possible application as an ergogenic aid to CF personnel during cold exposure. We do feel comfortable however with recommending HME use by those military personnel who have existing respiratory conditions that might be aggravated by cold andor exercise exposure.
- Medicine and Medical Research
- Stress Physiology