{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T01:35:58Z","timestamp":1778031358025,"version":"3.51.4"},"reference-count":34,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2015,9,2]],"date-time":"2015-09-02T00:00:00Z","timestamp":1441152000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Psychophysiology"],"published-print":{"date-parts":[[2015,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Previous studies have shown that resting heart rate variability (HRV) is modified by different phases of the menstrual cycle in nonusers of oral contraceptive pills (OCP); however, the effect of OCP on autonomic control of the heart remains unclear. The purpose of this study was to investigate HRV during the low hormone (LH\u2014not taking OCP) and during the high hormone (HH\u2014active OCP use) phases of the menstrual cycle in young women. Seventeen healthy women (19\u201331 years) taking OCP for at least 6 consecutive months were enrolled in this study. Plasma estradiol and progesterone were verified at each visit. HRV was assessed by using one\u2010lead electrocardiography in time and frequency domains, in which participants rested in the supine position for a 20\u2010min period with a breathing rate of 15 cycles\/min. In addition, resting heart rate, and systolic and diastolic blood pressure were obtained. Both plasma estradiol (LH: 19.8\u2009\u00b1\u20094.2 pg\/mL vs. HH: 12.4\u2009\u00b1\u20091.5 pg\/mL; <jats:italic>p<\/jats:italic>\u2009&gt;\u2009.05) and progesterone (LH: 0.247\u2009\u00b1\u20090.58 ng\/mL vs. HH: 0.371\u2009\u00b1\u20090.08 ng\/mL; <jats:italic>p<\/jats:italic>\u2009&gt;\u2009.05) (mean\u2009\u00b1\u2009<jats:italic>SE<\/jats:italic>) levels were similar in both phases. No significant difference was obtained for any component of HRV, heart rate, or blood pressure between the LH and HH phases (<jats:italic>p<\/jats:italic>\u2009&gt;\u2009.05). These results provide preliminary evidence that use of OCP does not affect HRV during the menstrual cycle in healthy women.<\/jats:p>","DOI":"10.1111\/psyp.12510","type":"journal-article","created":{"date-parts":[[2015,9,2]],"date-time":"2015-09-02T20:51:42Z","timestamp":1441227102000},"page":"1451-1455","source":"Crossref","is-referenced-by-count":38,"title":["Heart rate variability across the menstrual cycle in young women taking oral contraceptives"],"prefix":"10.1111","volume":"52","author":[{"given":"Andr\u00e9 L.","family":"Teixeira","sequence":"first","affiliation":[{"name":"Maternity Hospital Therezinha de Jesus, Faculty of Medical and Health Sciences\u2013SUPREMA Juiz de Fora Brazil"},{"name":"Postgraduate program, Exercise and Sports Sciences, State University of Rio de Janeiro (UERJ) Rio de Janeiro Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pl\u00ednio S.","family":"Ramos","sequence":"additional","affiliation":[{"name":"Maternity Hospital Therezinha de Jesus, Faculty of Medical and Health Sciences\u2013SUPREMA Juiz de Fora Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lauro C.","family":"Vianna","sequence":"additional","affiliation":[{"name":"Faculty of Physical Education University of Bras\u00edlia Bras\u00edlia Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Djalma R.","family":"Ricardo","sequence":"additional","affiliation":[{"name":"Maternity Hospital Therezinha de Jesus, Faculty of Medical and Health Sciences\u2013SUPREMA Juiz de Fora Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2015,9,2]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.6166045"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1152\/ajpheart.01283.2008"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2012.01.037"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.85.1.164"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(88)90917-4"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8986.1994.tb02351.x"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10286-003-0095-5"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/clc.4960140811"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1053\/euhj.1999.1875"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1210\/jcem.87.4.8406"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(87)90795-8"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0733-8651(18)30230-3"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijcard.2015.03.383"},{"key":"e_1_2_5_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(97)11144-8"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1113\/eph8802535"},{"key":"e_1_2_5_17_1","first-page":"1","article-title":"Noninvasive methods to study autonomic nervous control of circulation","volume":"588","author":"Lindqvist A.","year":"1990","journal-title":"Supplement]. 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