{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T16:11:22Z","timestamp":1787847082451,"version":"build-2784847793"},"reference-count":27,"publisher":"American Physiological Society","issue":"6","content-domain":{"domain":["journals.physiology.org"],"crossmark-restriction":true},"short-container-title":["American Journal of Physiology-Regulatory, Integrative and Comparative Physiology"],"published-print":{"date-parts":[[2026,6,1]]},"abstract":"<jats:p>Using dense longitudinal monitoring and ovulation-aligned cycle scaling, this study shows that vagally mediated heart rate variability does not follow a consistent population-level rhythm across the menstrual cycle. Instead, cardiac autonomic regulation exhibits pronounced individual-specific cyclic patterns and is strongly influenced by day-to-day fluctuations in subjective well-being. These findings help explain previously inconsistent menstrual cycle effects on heart rate variability.<\/jats:p>","DOI":"10.1152\/ajpregu.00028.2026","type":"journal-article","created":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T15:00:12Z","timestamp":1776783612000},"page":"R623-R630","update-policy":"https:\/\/doi.org\/10.1152\/aps-crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Cardiac autonomic regulation across the menstrual cycle is highly individual: evidence from phase-aligned cyclic generalized additive mixed models"],"prefix":"10.1152","volume":"330","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8330-8817","authenticated-orcid":false,"given":"Marcelle","family":"Schaffarczyk","sequence":"first","affiliation":[{"name":"Institute of Sport Science, Julius-Maximilians-Universit\u00e4t W\u00fcrzburg","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucie","family":"R\u00fcckemann","sequence":"additional","affiliation":[{"name":"MSH Medical School Hamburg","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4686-8561","authenticated-orcid":false,"given":"Billy","family":"Sperlich","sequence":"additional","affiliation":[{"name":"Institute of Sport Science, Julius-Maximilians-Universit\u00e4t W\u00fcrzburg","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5610-6013","authenticated-orcid":false,"given":"Thomas","family":"Gronwald","sequence":"additional","affiliation":[{"name":"MSH Medical School Hamburg","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"24","reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1096\/fj.202001387R"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.1097\/00006842-199507000-00004"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1111\/psyp.12250"},{"key":"B4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1542-474X.2001.tb00140.x"},{"key":"B5","doi-asserted-by":"publisher","DOI":"10.3390\/jcm9030617"},{"key":"B6","doi-asserted-by":"publisher","DOI":"10.1007\/s40279-025-02189-3"},{"key":"B7","doi-asserted-by":"publisher","DOI":"10.1027\/0269-8803\/a000237"},{"key":"B8","doi-asserted-by":"publisher","DOI":"10.3390\/jcm8111946"},{"key":"B9","doi-asserted-by":"publisher","DOI":"10.1007\/s40279-022-01691-2"},{"key":"B10","doi-asserted-by":"publisher","DOI":"10.1186\/s12905-024-03273-y"},{"key":"B11","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2017.00213"},{"key":"B12","doi-asserted-by":"publisher","DOI":"10.1016\/j.neubiorev.2011.11.009"},{"key":"B13","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000003861"},{"key":"B14","doi-asserted-by":"publisher","DOI":"10.1037\/a0032725"},{"key":"B15","doi-asserted-by":"publisher","DOI":"10.1016\/j.psyneuen.2025.107584"},{"key":"B16","doi-asserted-by":"publisher","DOI":"10.1016\/j.fertnstert.2007.01.045"},{"key":"B17","doi-asserted-by":"publisher","DOI":"10.1249\/00005768-199501000-00019"},{"key":"B18","doi-asserted-by":"publisher","DOI":"10.1016\/j.cmpb.2022.106696"},{"key":"B19","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2016-0668"},{"key":"B20","doi-asserted-by":"publisher","DOI":"10.3390\/s21206798"},{"key":"B21","doi-asserted-by":"publisher","DOI":"10.5960\/dzsm.2024.595"},{"key":"B22","doi-asserted-by":"publisher","DOI":"10.3390\/s26010003"},{"key":"B23","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000001095"},{"key":"B24","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsams.2018.07.014"},{"key":"B25","doi-asserted-by":"publisher","DOI":"10.1007\/s40279-025-02388-y"},{"key":"B26","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-025-13540-z"},{"key":"B27","doi-asserted-by":"publisher","DOI":"10.1186\/s40798-024-00779-5"}],"container-title":["American Journal of Physiology-Regulatory, Integrative and Comparative Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.physiology.org\/doi\/pdf\/10.1152\/ajpregu.00028.2026","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T19:40:17Z","timestamp":1779219617000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.physiology.org\/doi\/10.1152\/ajpregu.00028.2026"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,1]]},"references-count":27,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2026,6,1]]}},"alternative-id":["10.1152\/ajpregu.00028.2026"],"URL":"https:\/\/doi.org\/10.1152\/ajpregu.00028.2026","relation":{},"ISSN":["0363-6119","1522-1490"],"issn-type":[{"value":"0363-6119","type":"print"},{"value":"1522-1490","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,1]]},"assertion":[{"value":"2026-01-27","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-02-20","order":1,"name":"revised","label":"Revised","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-04-14","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-19","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}