{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T22:46:13Z","timestamp":1790289973068,"version":"4.1.0"},"reference-count":53,"publisher":"Canadian Science Publishing","issue":"10","license":[{"start":{"date-parts":[[2020,10,1]],"date-time":"2020-10-01T00:00:00Z","timestamp":1601510400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.nrcresearchpress.com\/page\/about\/CorporateTextAndDataMining"}],"content-domain":{"domain":["cdnsciencepub.com"],"crossmark-restriction":false},"short-container-title":["Appl. Physiol. Nutr. Metab."],"published-print":{"date-parts":[[2020,10]]},"abstract":"<jats:p> Numerous studies have examined heart rate variability (HRV) and cardiac baroreceptor sensitivity (BRS) variables during recovery both acutely (under 3 h) and long-term (24, 48, and 72 h) postexercise. However, there is little literature examining HRV and BRS measures between these timepoints. Spontaneous short-term HRV and cardiac BRS measures were collected in 9 participants before and at zero, 1, 2, 4, 6, and 8 h after 3 separate conditions: moderate-intensity continuous exercise (MICE; 45 min at 50% heart rate reserve), high-intensity interval exercise (HIIE; 25 min including ten 1-min intervals at 85% heart rate reserve), and control (30 min quiet rest). HRV measures in the time domain were only affected immediately following HIIE and MICE at hour zero (all p &lt; 0.043), whereas frequency-domain metrics were unaltered (all p &gt; 0.102). These measures were highly consistent across the control day (all p &gt; 0.420). Cardiac BRS was assessed via low-frequency (LF) gain, and revealed reductions following HIIE at hour zero (p &lt; 0.012). Cardiac BRS LF gain remained consistent following MICE and control interventions (all p &gt; 0.280). The common practice of waiting 12 to 24 h is overly conservative as the current findings demonstrate measures return to baseline at \u223c60 min after exercise. Moreover, these metrics demonstrated high levels of within- and between-day reliability. <\/jats:p><jats:p> Novelty Previously a 12-h minimum restriction from exercise was required before participation in HRV\/BRS studies. Recovery from moderate-intensity exercise for HRV and BRS metrics was &lt;60 min; whereas, high-intensity intervals led to alterations for approximately 60 min. Spontaneous HRV and cardiac BRS demonstrated high levels of within-day reproducibility. <\/jats:p>","DOI":"10.1139\/apnm-2019-0810","type":"journal-article","created":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T21:37:19Z","timestamp":1588109839000},"page":"1156-1164","update-policy":"https:\/\/doi.org\/10.1139\/csp-crossmark-policy","source":"Crossref","is-referenced-by-count":31,"title":["Effects of high-intensity intervals and moderate-intensity exercise on baroreceptor sensitivity and heart rate variability during recovery"],"prefix":"10.1139","volume":"45","author":[{"given":"Joel S.","family":"Burma","sequence":"first","affiliation":[{"name":"Concussion Research Laboratory, Faculty of Health and Exercise Science, University of British Columbia, Kelowna, BC V1V 1V7, Canada."},{"name":"Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada."},{"name":"Human Performance Laboratory, Faculty of Kinesiology, University 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