CARDIAC REHABILITATIONThe Talk Test as a Marker of Exercise Training IntensityFoster, Carl PhD; Porcari, John P. PhD; Anderson, Jennifer MS; Paulson, Melissa MS; Smaczny, Denise MS; Webber, Holly MS; Doberstein, Scott T. MS, ATC; Udermann, Brian PhD, ATCAuthor Information Department of Exercise and Sport Science, University of Wisconsin—La Crosse. Corresponding Author: Carl Foster, PhD, Department of Exercise and Sport Science, University of Wisconsin—La Crosse, La Crosse, WI 54601 ([email protected]). Journal of Cardiopulmonary Rehabilitation and Prevention: January 2008 - Volume 28 - Issue 1 - p 24-30 doi: 10.1097/01.HCR.0000311504.41775.78 Buy CE Test Metrics AbstractIn Brief PURPOSE Correlative data have suggested that the Talk Test (TT) may be a surrogate of the ventilatory threshold (VT). This study examined manipulations of either the VT or exercise protocol to test the hypothesis that the TT and VT are related in a robust way, adequate for exercise prescription. METHODS Healthy young adults participated in 4 independent series of experiments designed to decrease (blood donation) or increase (training) VT, or to systematically vary the exercise intensity above and below VT. These interventions were matched to responses of the TT. RESULTS The changes in the exercise intensity at VT and at the last positive stage of the TT matched each other following both blood donation and training. When exercise intensity was varied above and below VT, the predicted ability to speak was well matched to observations of the TT. Predictive errors biased toward passing the TT when exercise intensity was greater than VT. The time required for the result of TT to become negative when exercise intensity was more than VT, decreased with increasing intensity but averaged more than the 2 minutes that has been used in previous studies. CONCLUSIONS This study confirms the robust relationship between VT and the TT during various interventions and suggests that the TT is suitable for exercise prescription. This article shows a strong relationship between ventilatory threshold and the Talk Test during various interventions and suggests that the Talk Test is suitable for exercise prescription. © 2008 Lippincott Williams & Wilkins, Inc.