FeaturesAQUATIC EXERCISE FOR HEALTH PROBING THE DEPTHS OF HIIT FOR CARDIOMETABOLIC TRAININGNagle, Elizabeth F. Ph.D., FACSM; Sanders, Mary E. Ph.D., ACSM-CEP, RCEP, CDE, FACSM; Becker, Bruce E. M.D., M.S., FACSMAuthor Information Elizabeth F. Nagle, Ph.D., FACSM,is an associate professor in the Department of Health and Physical Activity (HPA) at the University of Pittsburgh with a secondary appointment in the School of Health and Rehabilitative Sciences. Dr. Nagle’s research is focused on aquatic physiology in clinical, athletic, military, and mainstream populations. Her work includes development and validation of aquatic aerobic test protocols and studying the physiologic and perceptual characteristics related to aquatic exercise. Mary E. Sanders, Ph.D., CDE, ACSM-CEP, RCEP, FACSM,is an assistant clinical professor/exercise physiologist at the University of Nevada, Reno School of Medicine and Community Health Sciences, School of Public Health, where her research and professional activities focus on aging, diabetes education, aquatic exercise, and WaterFit international education. Bruce E. Becker, M.D., M.S., FACSM,is a physiatrist who has devoted nearly 40 years to promoting and researching the value of aquatic therapy and exercise. The author and editor of Comprehensive Aquatic Therapy, 3rd edition, and all previous editions and translations, he has published extensively in the peer‐reviewed scientific literature and lectures nationally and globally on the topic. The recipient of numerous awards in the field, Dr. Becker is widely respected as a major force in aquatic therapy. Disclosure: This study was supported by the National Swimming Pool Foundation and the University of Pittsburgh Center for Research and Development Fund. The authors declare no conflict of interest. Supplemental digital content (SDC) is available for this article. Direct URL citations appear in the printed text, and links to the digital files are provided in the HTML text of this article on the journal’s Web site (www.transplantationdirect.com). ACSM's Health & Fitness Journal: July/August 2019 - Volume 23 - Issue 4 - p 14-26 doi: 10.1249/FIT.0000000000000493 Buy SDC Metrics Abstract Apply It! Learn how to integrate aquatic activities as part of a well-rounded program for patients or clients who could benefit from immersion and/or exercise in water. Advocate for a shallow water aquatic interval exercise Rx to clients who aim to expand their volume and intensity of activities without increased risk for injury. Use water’s properties within the context of safe training principles to prescribe a water-specific exercise prescription that can effectively offer clients a “gateway” to adopting a fun alternative to traditional land-based training options © 2019 American College of Sports Medicine.