REVISITING HEART RATE TARGET ZONES THROUGH THE LENS OF WEARABLE TECHNOLOGYScheid, Jennifer L., Ph.D.; O’Donnell, Emma, Ph.D.ACSM's Health & Fitness Journal: May/June 2019 - Volume 23 - Issue 3 - p 21–26 doi: 10.1249/FIT.0000000000000477 Features Buy Abstract Author InformationAuthors Article MetricsMetrics Apply It! By reading this article, the health and fitness professional will understand how heart rate can be used to monitor exercise intensity, be given examples of some of the different heart rate zones that are promoted by different fitness technologies, and understand some of the limitations of technologies for measuring and monitoring heart rate. Jennifer L. Scheid, Ph.D., CSCS,is an assistant professor of health promotion at Daemen College. Dr. Scheid has published articles spanning from metabolic and endocrine alterations in exercising women with menstrual cycle disturbances (and the female athlete triad) to behavioral studies investigating motivation to each in obese children and adults. Emma O’Donnell, Ph.D., FHEA,is a lecturer of exercise physiology at Loughborough University, England. Dr. O’Donnell has published articles in cardiovascular function and regulation in recreational and competitive female athletes and is currently undertaking research examining sex differences in vascular adaptations to exercise training with aging. Disclosure: The authors declare no conflict of interest and do not have any financial disclosures. © 2019 American College of Sports Medicine.