Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Stress and Menstrual Health

4. juni 2026 opdateret af: Duke University

The Influence of Non-energetic Stressors on Human Menstrual Function

The goal of this experimental study is to determine how stressors that do not directly impact energy state or energy demands (hereafter called "non-energetic stressors") affect reproductive health in pre-menopausal women. It aims to do this by answering the following main questions: Do non-energetic stressors create a stress response? How does the stress response impact sex hormone concentration and thus menstrual dysfunction? If stress caused by non-energetic stressors does impact sex hormone concentration, does it do so primarily at the level of the brain or the level of the ovary? Participants will be enrolled in this study for 6 months. For two of these months, they will undergo a short stress intervention and provide samples to measure hormone concentration and total energy expenditure.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The Reproductive Suppression Model posits that due to the high cost and failure rate of human reproduction, the female body maximizes lifetime reproductive fitness by suppressing reproduction during poor conditions (where likelihood of offspring survival is low) until conditions are more favorable. The hormonal mechanism for this suppression when calories are scarce and the female body is in low energy availability (LEA) has been studied. However, the mechanism for this suppression in the presence of stressors unrelated to low energy availability, but which could still negatively impact offspring survival, is much less clear. The investigators define such stressors, which do not impact energy state or energetic demands, as "non-energetic stressors." Thus, the aim of this study is to determine if non-energetic stressors drive reproductive suppression in humans. The investigators will assess this by testing the impact of a stress intervention on the stress hormones cortisol and norepinephrine, and in turn if the levels of these stress hormones predict the levels of sex hormones associated with the menstrual cycle. Finally, the investigators will assess if changes in stress hormones change total and basal energy expenditure.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

600

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • North Carolina
      • Durham, North Carolina, Forenede Stater, 27708
        • Rekruttering
        • Duke University
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Adult pre-menopausal females, 18-45 years old
  • Habitually sedentary (less than 60 minutes MVPA/week) for Exercise cohort

Exclusion Criteria:

  • Individuals on hormonal birth control (oral contraception, injection, implant, or intrauterine device)
  • Individuals with incidence in the last 6 months of childbirth, lactation, pregnancy, or functional hypothalamic amenorrhea (FHA)
  • Individuals with reproductive disorders (e.g. endometriosis, polycystic ovarian syndrome (PCOS))
  • Individuals taking thyroid medications
  • Individuals who have undergone or are undergoing menopause
  • MVPA >60 min/week (for Exercise cohort)

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Heat Stress
Heat stress via 70-80°C sauna exposure for 45-min sessions on 5 consecutive days (days 4-8 or 5-9 of follicular phase).
Andet: Heat stress
Stress-Heat participants will undergo supervised 40-min sessions in a 70-80˚C sauna
Eksperimentel: Sleep Stress
Sleep restriction to 4-6 hours/night for 5 consecutive nights (on days 3-8 or 4-9 of follicular phase).
Andet: Sleep stress
Stress-Sleep participants will be asked to sleep for between 4 and 6 hours per night, with compliance monitored via their activity monitors and self-reported sleep diaries. Participants will be requested to maintain normal wake cycles without midday sleep.
Eksperimentel: Exercise Stress
One-hour cycling at 60-75% predicted max HR for 5 consecutive days (days 4-8 or 5-9 of follicular phase).
Andet: Exercise stress
Stress-Exercise participants will come to the Pontzer Lab to complete a one-hour cycling workout on a Lode Corival CPET ergometer/exercise bike at 60-75% predicted maximum heart rate.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Total daily energy expenditure (TDEE)
Tidsramme: Baseline (Month 2), Intervention (Month 4)
TDEE (kcal) will be measured over a 7-day period during the Baseline and first Intervention month using the doubly-labeled water (DLW) method. DLW is a safe and reliable method for capturing free-living TDEE and has been validated for human studies. The DLW method adds a known amount of stable isotopes, oxygen-18 (18O) and deuterium (2H), to a participant's total body water (TBW) via ingestion and then measures the depletion rate of these isotopes as they are removed from the body via urine and exhalation.
Baseline (Month 2), Intervention (Month 4)
Basal metabolic rate (BMR)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
BMR (kcal/d) will be estimated via indirect calorimetry. Participants will be asked to come in for a lab visit on a day of their choice within 2-7 days post-ovulation prior to consuming breakfast or any non-water beverage and after having refrained from exercise for 24 hours pre-measurement. Participants will lie on an exam bed in the Pontzer Lab and have a clear plastic hood connected to a COSMED Quark RMR machine placed over their head for approximately 25-30 minutes. This hood will collect exhaled air, which will be measured for CO2 production to estimate BMR.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Sex hormone concentration (estradiol)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Sex hormone concentration (progesterone)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Stress hormone concentration (norepinephrine)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Stress hormone concentration (cortisol)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Stress hormone concentration (salivary alpha-amylase)
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Sex hormone concentration (luteinizing hormone (LH))
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Sex hormone concentration (follicle-stimulating hormone (FSH))
Tidsramme: Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)
Samples will be assayed via enzyme-linked immunosorbent assay (ELISA) in the Pontzer Lab.
Baseline (Month 2), Control (Month 3), Intervention (Months 4-5), and Follow-up (Month 6)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Duke University

Efterforskere

  • Ledende efterforsker: Herman Pontzer, PhD, Duke University Evolutionary Anthropology Department

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

28. maj 2026

Primær færdiggørelse (Anslået)

1. august 2028

Studieafslutning (Anslået)

1. august 2029

Datoer for studieregistrering

Først indsendt

29. april 2026

Først indsendt, der opfyldte QC-kriterier

29. april 2026

Først opslået (Faktiske)

5. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. juni 2026

Sidst verificeret

1. april 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • Pro00119656

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Menstrual Dysfunction

Kliniske forsøg med Heat stress

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Greece

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner