{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T16:21:44Z","timestamp":1772554904140,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T00:00:00Z","timestamp":1772496000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCDD"],"abstract":"<jats:p>The aims of this study are the following: To examine whether field tests predict cardiorespiratory fitness in people with coronary heart disease (CHD) and to determine if heart rate (HR) agreement between the first ventilatory threshold (VT1) and field tests is sufficient for prescribing exercise intensity. Participants randomly completed field tests and a cardiopulmonary exercise test (CPET). Linear regression models were developed to predict VT1. Agreement between predicted and measured peak oxygen consumption (V\u0307O2peak) as well as field test terminal HR and HR at VT1 (VT1HR) was assessed using Pearson correlations, Bland\u2013Altman analyses, mean absolute percentage error (MAPE), Lin\u2019s concordance correlation coefficient (CCC), and standard error of estimate (SEE). Agreement between predicted and measured V\u0307O2peak was modest (Pearson\u2019s r = 0.27\u20130.77; Lin\u2019s CCC = 0.132\u20130.735; MAPE = 16.1\u201330.1%; SEE = 4.7\u20136.8 mL\u00b7kg\u22121\u00b7min\u22121). Agreement between field test terminal HR and VT1HR was moderate (Pearson\u2019s r = 0.50\u20130.67; Lin\u2019s CCC = 0.36\u20130.68; MAPE = 8.9\u201313.7%; SEE = 11.9\u201318.7 bpm; Bland\u2013Altman 95%LOA = \u22123.5 to 13.7 bpm). Field tests demonstrated variable accuracy for predicting V\u0307O2peak, with none meeting predefined agreement criteria. Regression models indicate field tests can estimate VT1; however, levels of HR agreement indicate CPET is necessary for prescribing exercise intensity.<\/jats:p>","DOI":"10.3390\/jcdd13030114","type":"journal-article","created":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T12:48:56Z","timestamp":1772542136000},"page":"114","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Utility of Field Tests for Predicting Cardiorespiratory Fitness and Prescribing Exercise Intensity in Cardiac Rehabilitation Programs: A Randomized Crossover Trial"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5539-0697","authenticated-orcid":false,"given":"Blake E. G.","family":"Collins","sequence":"first","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8864-2128","authenticated-orcid":false,"given":"Brett A.","family":"Gordon","sequence":"additional","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7316-6373","authenticated-orcid":false,"given":"Daniel W. T.","family":"Wundersitz","sequence":"additional","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3228-2930","authenticated-orcid":false,"given":"Jayden R.","family":"Hunter","sequence":"additional","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"},{"name":"Department Rural Allied Health, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1612-3315","authenticated-orcid":false,"given":"Lisa C.","family":"Hanson","sequence":"additional","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"},{"name":"Department Rural Allied Health, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1953-4067","authenticated-orcid":false,"given":"Michael I. C.","family":"Kingsley","sequence":"additional","affiliation":[{"name":"Holsworth Biomedical Research Centre, La Trobe Rural Health School, La Trobe University, Bendigo, VIC 3550, Australia"},{"name":"School of Exercise, Sport and Rehabilitation Sciences, Faculty of Science, University of Auckland, Auckland 1142, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1016\/j.pcad.2019.01.002","article-title":"Cardiorespiratory fitness and cardiovascular disease-the past, present, and future","volume":"62","author":"Kaminsky","year":"2019","journal-title":"Prog. Cardiovasc. Dis."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Mytinger, M., Nelson, R.K., and Zuhl, M. (2020). Exercise prescription guidelines for cardiovascular disease patients in the absence of a baseline stress test. J. Cardiovasc. Dev. 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