Higher number of steps is related to lower endogenous progesterone but not 
estradiol levels in women

Słojewska, Kinga; Galbarczyk, Andrzej; Klimek, Magdalena; Tubek-Krokosz, Anna; Krzych-Miłkowska, Karolina; Szklarczyk, Joanna; Mijas, Magdalena; Ścibor, Monika; Jasienska, Grazyna; Tin Tin, Sandar

doi:10.1371/journal.pone.0299580

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学術論文

Higher number of steps is related to lower endogenous progesterone but not estradiol levels in women

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Galbarczyk, Andrzej
Department of Human Behavior Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

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Słojewska_Higher_PLoSOne_2024.pdf
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引用

Słojewska, K., Galbarczyk, A., Klimek, M., Tubek-Krokosz, A., Krzych-Miłkowska, K., Szklarczyk, J., Mijas, M., Ścibor, M., & Jasienska, G. (2024). Higher number of steps is related to lower endogenous progesterone but not estradiol levels in women. PLOS ONE, 19(4):. doi:10.1371/journal.pone.0299580.

引用: https://hdl.handle.net/21.11116/0000-000F-2958-1

要旨

Objectives
Sex steroid hormones are important not only for reproduction but also for many aspects of women’s health, including the risk of breast cancer. Physical activity has been shown to influence sex hormone levels in women. This study aimed to investigate a relationship between the average daily number of steps and the sex hormone (estradiol and progesterone) levels in premenopausal women.

Materials and methods
Data were collected from 85 healthy, urban women of reproductive age who performed at least 180 minutes/week of moderate physical activity for two complete menstrual cycles. Physical activity was measured using wrist bands. Estradiol and progesterone concentrations were measured in daily-collected saliva samples in the second menstrual cycle.

Results
There was a significant negative association between the average number of steps taken daily and salivary progesterone levels after adjusting for potential confounding factors (age, BMI). Women who took more than 10,000 steps a day had significantly lower progesterone levels compared to women who took less than 10,000 steps. The association between physical activity and estradiol levels was statistically insignificant.

Discussion
Our results indicate that taking at least 10,000 steps a day reduces progesterone levels, but this intensity of physical activity may not be high enough to affect estradiol levels. Daily step tracking is a valuable element of health promotion, but currently recommended levels of physical activity may not be high enough for healthy premenopausal women to significantly reduce both sex hormone levels and thus their risk of postmenopausal breast cancer.