{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T03:42:08Z","timestamp":1788579728595,"version":"build-2803163510"},"reference-count":0,"publisher":"American Physiological Society","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[1989,11,1]]},"abstract":"<jats:p> The purpose of this study was to evaluate the effects of metabolic alkalosis on differentiated ratings of perceived exertion during intermittent high-intensity exercise. Six endurance-trained females participated as subjects in this investigation. Each subject underwent three separate experimental trials in which NaHCO3 was ingested in either a single (0.3 g NaHCO3\/kg body wt) or periodic schedule (0.12 g NaHCO3\/kg body wt initially, with 0.18 g\/kg body wt distributed in equal doses before each 5-min exercise bout). Calcium carbonate served as a placebo control. An intermittent exercise protocol was used in which each subject rode a cycle ergometer at 90% maximum O2 consumption for 5 min. Within each acid-base condition, the exercise protocol was repeated three times with 10-min rest periods interspersed. Differentiated ratings of perceived exertion for the legs (RPE-L), chest (RPE-C), and overall body (RPE-O) were attenuated under alkalotic treatment relative to placebo control regardless of pattern of NaHCO3 administration. RPE-L, RPE-C, and RPE-O were negatively correlated to the bicarbonate concentration of venous blood. This investigation suggests that perception of effort during high-intensity intermittent exercise can be related to buffering capacity of the blood. <\/jats:p>","DOI":"10.1152\/jappl.1989.67.5.1862","type":"journal-article","created":{"date-parts":[[2017,12,21]],"date-time":"2017-12-21T10:27:53Z","timestamp":1513852073000},"page":"1862-1867","source":"Crossref","is-referenced-by-count":36,"title":["Effect of induced alkalosis on perception of exertion during intermittent exercise"],"prefix":"10.1152","volume":"67","author":[{"given":"A.","family":"Swank","sequence":"first","affiliation":[{"name":"Exercise Physiology Laboratory, University of Louisville, Kentucky 40292."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. J.","family":"Robertson","sequence":"additional","affiliation":[{"name":"Exercise Physiology Laboratory, University of Louisville, Kentucky 40292."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"24","container-title":["Journal of Applied Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.physiology.org\/doi\/pdf\/10.1152\/jappl.1989.67.5.1862","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,9,8]],"date-time":"2019-09-08T11:35:28Z","timestamp":1567942528000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.physiology.org\/doi\/10.1152\/jappl.1989.67.5.1862"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1989,11,1]]},"references-count":0,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1989,11,1]]}},"alternative-id":["10.1152\/jappl.1989.67.5.1862"],"URL":"https:\/\/doi.org\/10.1152\/jappl.1989.67.5.1862","relation":{},"ISSN":["8750-7587","1522-1601"],"issn-type":[{"value":"8750-7587","type":"print"},{"value":"1522-1601","type":"electronic"}],"subject":[],"published":{"date-parts":[[1989,11,1]]}}}