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Skip search results from other journals and go to results- 5 Journal of Medical Internet Research
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Oura Ring as a Tool for Ovulation Detection: Validation Analysis
With advances in wearable technology, an increasing number of women are leveraging continuous, automated sensor data to track ovulation [1]. Ovulation tracking serves multiple purposes; notably, it can be used to delineate the end of the fertile window to optimize the timing of intercourse for conception or contraception. Studies have shown that ovulation tracking can increase the likelihood of conception by approximately 40% for those trying to conceive [2-5].
J Med Internet Res 2025;27:e60667
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The fertile period starts 5 days before the day of ovulation, with a higher probability of conception on the day before ovulation [1-4]. Although several biomarkers have been used to predict the day of ovulation, measuring basal body temperature (BBT) immediately after waking is a simple and noninvasive method [5]. Indeed, a cohort study reported that 21% of women use BBT to track their fertility [6], so it is very important to improve the accuracy of BBT in predicting the presence or absence of ovulation.
JMIR Form Res 2024;8:e55834
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Several studies have noted that skin temperature was higher during the luteal phase than during menstruation and ovulation [7,8]. For example, 1 study found that female individuals’ skin temperature is 0.33 °C higher during the luteal phase than during ovulation (fertile phase) (P
Additionally, studies have noted that temperature declined during the fertile phase, defined as 5 days leading up to and inclusive of ovulation, when compared with temperature during menstruation [8,13].
J Med Internet Res 2024;26:e45139
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Digital Global Recruitment for Women’s Health Research: Cross-sectional Study
However, studies assessing the utility of these sources for recruitment to epidemiological research on ovulation and menstruation (OM) are lacking.
The ovulation and menstruation study (OM Global Health Study) recruited individuals from the mobile menstrual tracking app Clue and a boosted Facebook post by Diva Cup (Diva International Inc.). Clue is a menstrual tracking app that was founded in 2013 by the Berlin-based company Bio Wink Gmb H.
JMIR Form Res 2022;6(9):e39046
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Monitoring BBT is one of the simplest and least invasive methods for determining the occurrence of ovulation and estimating its timing during the menstrual cycle [1]. In most women, BBT reaches its lowest point in each cycle just before ovulation and increases in the luteal phase because of the thermogenic properties of progesterone [2]. This physiological change is known as a temperature shift that presents as a biphasic pattern on the BBT curve [3].
J Med Internet Res 2021;23(6):e20710
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Multimodal Recruitment to Study Ovulation and Menstruation Health: Internet-Based Survey Pilot Study
The Ovulation and Menstruation Health Pilot Study was conducted to (1) determine the feasibility of enrolling participants from diverse backgrounds using varied recruitment modalities, and (2) understand how survey completion status differed by participant characteristics.
The Ovulation and Menstruation Health study website consists of a short animated educational recruitment video, a web-based consent form, screening questions, and a survey instrument.
J Med Internet Res 2021;23(4):e24716
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However, this assumes that ovulation occurs exactly 14 days before the onset of the next menstrual period and that the fertile window extends before and after ovulation [1]. Data on aggregated cycles show mean cycle lengths of 28 to 29 days [2,3] and 29 to 30 days [4-7].
J Med Internet Res 2020;22(6):e17109
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