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Am J Sports Med
January 2025
Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Background: Sex differences exist in injury rates, and one contributing factor may be sex hormone effects on the musculoskeletal system.
Purpose/hypothesis: The goal of this systematic review and meta-analysis was to understand the effects of sex hormones on ligaments in females as determined by preclinical and clinical studies. The hypothesis was that sex hormones would affect ligament mechanical properties, histological features, cellular function, and clinically measurable outcomes.
Acta Obstet Gynecol Scand
January 2025
College of Sports Training, Wuhan Sports University, Wuhan, China.
Introduction: Aerobic exercise has been confirmed to alleviate primary dysmenorrhea (PD) in adolescents and young women. However, the effect of the aerobic exercise type and dosage on PD alleviation was unclear. This research aims to assess the effect of aerobic exercise on PD and investigate the dose-response relationships.
View Article and Find Full Text PDFAm J Physiol Regul Integr Comp Physiol
January 2025
Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada.
This study examined how successive sets of high-intensity leg press (LP) resistance exercise impact the cerebral pressure-flow relationship in untrained males and eumenorrheic females not taking oral contraceptives, and assessed how menstrual cycle (MC) phase influences the cerebral pressure-flow relationship and cerebral hemodynamics (middle cerebral artery blood velocity; MCAv; via transcranial Doppler ultrasound) during and after LP exercise in females. Young adults (11M;11F) performed three sets of leg-press exercises at 90% of their 1-repetition maximum. Data from males and females in early follicular phase were pooled together.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
January 2025
Reproduction Center, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Objective: We investigated whether the addition of a luteal phase support drug benefits pregnancy and perinatal outcomes in modified natural-cycle frozen-thawed embryo transfer (mNC-FET) for women up to the age of 35 years.
Methods: We analyzed the clinical data of 3658 mNC-FET cycles of women up to the age of 35 years from the Reproductive Center of the Third Affiliated Hospital of Zhengzhou University from January 2018 to December 2020 in a retrospective cohort study. The cycles were divided into three groups based on the luteal phase support protocol used.
Hum Reprod
January 2025
Apple Inc. Health, Cupertino, CA, USA.
Study Question: Can algorithms using wrist temperature, available on compatible models of iPhone and Apple Watch, retrospectively estimate the day of ovulation and predict the next menses start day?
Summary Answer: Algorithms using wrist temperature can provide retrospective ovulation estimates and next menses start day predictions for individuals with typical or atypical cycle lengths.
What Is Known Already: Wrist skin temperature is affected by hormonal changes associated with the menstrual cycle and can be used to estimate the timing of cycle events.
Study Design, Size, Duration: We conducted a prospective cohort study of 262 menstruating females (899 menstrual cycles) aged 14 and older who logged their menses, performed urine LH testing to define day of ovulation, recorded daily basal body temperature (BBT), and collected overnight wrist temperature.
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