Determination of Biphasic Menstrual Cycle Based on the Fluctuation of Abdominal Skin Temperature during Sleep

In this study, we focused on the fluctuation of the abdominal skin temperature (AST) during sleep as a second marker for determining the biphasic menstrual cycle, alongside the basal body temperature. The nocturnal AST was measured every 10 min using a wearable device mounted on the abdominal wall....

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Bibliographic Details
Published in:Advanced Biomedical Engineering 2023, Vol.12, pp.28-36
Main Authors: Murayama, Yoshinobu, Uemura, Aiko, Kitazawa, Masumi, Toyotani, Jun, Taniuchi, Asako, Togawa, Tatsuo
Format: Article
Language:English
Subjects:
Abdomen
abdominal skin temperature
Abdominal wall
Attenuation coefficients
Body temperature
Confidence intervals
Deep learning
fluctuation
Long short-term memory
Menstrual cycle
Menstruation
ovulation
Phases
Skin temperature
Sleep
Statistical analysis
Wearable technology
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Summary:In this study, we focused on the fluctuation of the abdominal skin temperature (AST) during sleep as a second marker for determining the biphasic menstrual cycle, alongside the basal body temperature. The nocturnal AST was measured every 10 min using a wearable device mounted on the abdominal wall. With this system, the AST time-series data were recorded for a total of 1667, 1035, and 1690 days from seven participants for the menstrual/follicular, ovulatory, and luteal phases, respectively. First, the AST fluctuation was evaluated by plotting the cumulative probability distribution (CPD) of changes in AST every 10 min from 0 to 0.7℃. The results showed that the CPD fitted well with an exponential attenuation curve. Second, the mean attenuation coefficients obtained by exponential regression from the CPD data were compared among the three phases. For regular menstrual cycles, the attenuation coefficient was the highest in the menstrual/follicular phase (8.57; 95% confidence interval 8.44–8.70; R2 = 0.983; P 
ISSN:2187-5219
2187-5219
DOI:10.14326/abe.12.28