Eston, RogerCoquart, JeremyLamb, Kevin L.Parfitt, Gaynor2017-12-072017-12-072015-12-01Eston, R., Coquart, J., Lamb, K., & Parfitt, G. (2015). Misperception: No evidence to dismiss RPE as regulator of moderate-intensity exercise. Medicine & Science in Sports & Exercise, 47(12), 2676.10.1249/MSS.0000000000000748http://hdl.handle.net/10034/620747This document is the Accepted Manuscript version of a published work that appeared in final form in Medicine & Science in Sport & Exercise. To access the final edited and published work see https://doi.org/10.1249/MSS.0000000000000748.Dear Editor-in-Chief, Shaykevich et al. (7) demonstrate the efficacy of auditory feedback anchored at 75% of age-predicted HRmax to regulate intensity (claimed as ‘‘moderate’’) during several 20-min bouts of cycling. Their technical approach is novel, but 76% HRmax is the upper limit of moderate intensity, so given the large error in age-predicted HRmax, it is unlikely that their exercise bandwidth was ‘‘moderate’’ for all participants. This is not our major concern, but it reveals one among other inaccuracies: the most serious include training, interpretation, and inferences relating to the RPE.enhttp://creativecommons.org/licenses/by/4.0/RPEIntensity regulationArticleMedicine & Science in Sports & Exercise