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Effects of Estrogen on Muscle Gain During 12-weeks of Exercise in Post-menopausal Women (HER-MUSCLE)

23. mai 2026 oppdatert av: Mette Hansen

As females age and transition through menopause, the decline in oestrogen level profoundly affects skeletal muscle mass and function. HER-MUSCLE aims to unravel the mechanisms by which oestrogen enhances muscle growth, providing insights for targeted therapies to improve the health and physical function of postmenopausal females.

Focusing on postmenopausal females, an increasingly at-risk demographic, HER-MUSCLE addresses a critical gap in understanding how oestrogen influences muscle mass and function during anabolic (exercise) conditions.

The project involves:

  1. Clinical Trial: Postmenopausal females will receive either oestrogen or placebo, twelve weeks of exercise training to detect oestrogen regulatory role on muscle mass and function.
  2. Molecular Analysis: Advanced techniques will study the muscle microenvironment, focusing on muscle stem cells (MuSCs), fibro-adipogenic progenitors (FAPs), and other cells critical for muscle regeneration and maintenance.
  3. Mitochondrial Function assessed in vivo via magnetic resonance spectroscopy: The impact of oestrogen on mitochondrial health will be examined, exploring how it preserves mitochondrial function and ability to recovery and resist fatigue in response to muscle contractions.

Our preliminary data indicate that oestrogen can promote muscle protein synthesis. HER-MUSCLE aims to pave the way for novel therapeutic strategies to manage sarcopenia in postmenopausal women, ultimately leading to better health outcomes and enhanced well-being for this growing population segment.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

As females age and transition through menopause, the decline in oestrogen level profoundly affects skeletal muscle mass and function. HER-MUSCLE aims to unravel the mechanisms by which oestrogen enhances muscle growth, providing insights for targeted therapies to improve the health and physical function of postmenopausal females.

Focusing on postmenopausal females, an increasingly at-risk demographic, HER-MUSCLE addresses a critical gap in understanding how oestrogen influences muscle mass and function during anabolic (exercise) conditions.

The project involves:

  1. Clinical Trial: Postmenopausal females will receive either oestrogen or placebo, twelve weeks of exercise training to detect oestrogen regulatory role on muscle mass and function.
  2. Molecular Analysis: Advanced techniques will study the muscle microenvironment, focusing on muscle stem cells (MuSCs), fibro-adipogenic progenitors (FAPs), and other cells critical for muscle regeneration and maintenance.
  3. Mitochondrial Function assessed in vivo via magnetic resonance spectroscopy: The impact of oestrogen on mitochondrial health will be examined, exploring how it preserves mitochondrial function and ability to recovery and resist fatigue in response to muscle contractions.

Our preliminary data indicate that oestrogen can promote muscle protein synthesis. HER-MUSCLE aims to pave the way for novel therapeutic strategies to manage sarcopenia in postmenopausal women, ultimately leading to better health outcomes and enhanced well-being for this growing population segment.

Studietype

Intervensjonell

Registrering (Antatt)

30

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

  • Navn: Mette Hansen, PhD
  • Telefonnummer: +4551666551
  • E-post: mhan@ph.au.dk

Studiesteder

  • Danmark
    • Jutland
      • Aarhus, Jutland, Danmark, 8000
        • Rekruttering
        • Aarhus University
        • Ta kontakt med:
          • Mette Hansen, PhD
          • Telefonnummer: +4551666551
          • E-post: mhan@ph.au.dk

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • 1-10 years since last menstrual bleeding
  • Age > 40 years old
  • BMI 20-30

Exclusion Criteria:

  • Follicular stimulating hormone < 30 mmol/L
  • Systematic strength training during the last year (> 1 strength training session per week)
  • Injuries to the legs which may prevent participation in the physical training program
  • Magnetizable metals or electrical devices implanted in the body, such as a pacemaker
  • Use of medication that can influence the effect of immobilization and/or training
  • Muscular or joint disorders which may affect the results
  • Metabolic diseases (such as diabetes and cardiovascular diseases)
  • Previous or present liver or cancer disease
  • Current or previous thrombosis
  • Porphyria
  • Epilepsia
  • Systemic autoimmune disease
  • Edema
  • Smoking or use of other nicotine containing products
  • Claustrophobia
  • Addictive behavior, defined as abuse of cannabis, opioids, or other intoxicating substances.
  • Lack of ability to cooperate
  • Blood parameters out of normal range at the health check
  • Blood pressure above 140/90 mmHg

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Grunnvitenskap
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Trippel

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Estrogen
Transdermal Estrogen Administration
Legemiddel: Estrogel
The other group receive placebo treatment
Atferdsmessig: Physical exercise
Both groups will go through 12 weeks of supervised physical exercise, consisting of both strength training and cardiovascular training
Placebo komparator: Placebo
Transdermal placebo administration
Atferdsmessig: Physical exercise
Both groups will go through 12 weeks of supervised physical exercise, consisting of both strength training and cardiovascular training

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Muscle mass
Tidsramme: 12 weeks
Magnetic resonance imaging of one leg before and after intervention
12 weeks

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Blodtrykk
Tidsramme: 12 uker
12 uker
Mitochondria Function in vivo measured as phosphocreatine recovery rate
Tidsramme: 12 weeks
The dominant foot will be attached to a pedal mounted on the patient bed and a dedicated 31P surface coil will be secured over the tibialis anterior muscle. The pedal is designed to allow dynamic contractions of the tibialis anterior muscle while changes in metabolites from the tibialis anterior muscle are acquired non-invasively with the 31P coil. Two protocols will be performed: Firstly, 10 repeated contractions (one per 3 sec with a load representing 30% of maximal force) will result in a depletion (30-40%) of phosphocreatine (PCr). The rate constant for PCr recovery over 10 min will be used as an index of in vivo mitochondrial function. Secondly, a total of 80 repeated contractions (one per 3 sec with a load representing 30% of maximal force) will be used to quantify muscle fatigue and concurrent changes in muscle metabolites and intracellular pH (based on the chemical shift between inorganic phosphate and PCr).
12 weeks
Mitochondria Function in vitro measured as maximal oxygen consumption
Tidsramme: 12 weeks

All measurements were performed in duplicate using an Oxygraph-2k (Oroboros, Austria), in hyperoxygenated chambers (250-450 nmol O₂/mL).

Respiratory Control Ratio was used to evaluate mitochondrial efficiency. It was calculated as the ratio of maximal ADP-supported respiration (with complex I + II substrates) to leak respiration. Leak respiration reflects oxygen consumption in the absence of ATP synthesis, when only substrates are present and no ADP is added.
12 weeks
Body composition
Tidsramme: 12 weeks
DXA
12 weeks
Satelitte cells
Tidsramme: 12 weeks
Histochemical Analysis of Muscle tisse
12 weeks
Muscle fiber cross-sectional Area
Tidsramme: 12 weeks
Histochemical Analysis of Muscle Tissue
12 weeks
Expression of Muscle proteins
Tidsramme: 12 weeks
Western blotting analysis
12 weeks
FACS Analysis
Tidsramme: 12 weeks
FACS analysis to quantify and isolate Muscle satelitte celss, fibro-adipogenic progenitors and macrofages
12 weeks
Muscle Strength
Tidsramme: 12 weeks
Includes measure of leg strength during isometric and dynamic maximal voluntary contractions in a dynamometer (Humac Norm, CSMi, Massachusetts, United States) with a hip angle of 90°. In addition, finger strength, hand grip strength
12 weeks
Functional test
Tidsramme: 12 weeks
Includes counter-movement jump on a speed force-platform (Swift performance, Australia). To measure dexterity, the nine-hole peg test will be applied.
12 weeks
Cardiovascular fitness
Tidsramme: 12 weeks
Vo2max test on a bike and estimated via Ventriject
12 weeks
Maximal fat oxidation rate
Tidsramme: 12 weeks
Bike test with increasing intensity steps
12 weeks
Resisting metabolic rate
Tidsramme: 12 weeks
12 weeks
Questionaires
Tidsramme: 12 weeks
The participant will be asked to fill out recognized questionnaires about menopause (Menopause Rating Scale), sleep, diet and training readiness (modified version of "The wellbeing review"
12 weeks
Physical Activity Level
Tidsramme: 12 weeks
Accelerometers
12 weeks
Flexibility
Tidsramme: 12 weeks
sit-and-reach test
12 weeks
Knee laxity
Tidsramme: 12 weeks
Lachmeter test
12 weeks
Protein expression in adipose tissue
Tidsramme: 12 weeks
Two adipose tissue biopsies will be obtained from each participant by a trained physician before and after 12 weeks from subcutaneous abdominal and gluteal regions. Western blotting analysis of expression of proteins related to lipolysis and lipogenesis
12 weeks
Blood volume
Tidsramme: 12 weeks
Determination of blood volume and haemoglobin mass by the carbon-monoxide rebreathing method
12 weeks

Andre resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Høyde
Tidsramme: 12 uker
12 uker
Blood analysis
Tidsramme: 12 weeks
estradiol testosteron SHBG progesteron FSH LH Insulin IGF-1 + IGF-1 Bp3 - metabolit LDL - lipid HDL - lipid Triglycerid - lipid Total cholesterol Kortisol P1NP CTX1 - knogle HbA1c PTH CRP p-kreatinase p-kreatinin+eGFR p-calcium p-alanintransaminase p-albumin Alkalisk fosfatase (ALP) 6-keto-PGF1a Endothelin-1 s-VCAM-1 s-ICAM-1 Glucose Hæmoglobin Hæmatokrit
12 weeks
Dairy record registration
Tidsramme: 12 weeks
Before the intervention and during during rehabilization
12 weeks
Body mass
Tidsramme: 12 weeks
12 weeks

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Mette Hansen

Samarbeidspartnere

Aarhus University Hospital
University of Copenhagen
Aalborg University

Etterforskere

  • Hovedetterforsker: Mette Hansen, PhD, Aarhus University, Department of Public Health

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Hjelpsomme linker

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. februar 2026

Primær fullføring (Antatt)

1. august 2027

Studiet fullført (Antatt)

1. august 2027

Datoer for studieregistrering

Først innsendt

27. februar 2026

Først innsendt som oppfylte QC-kriteriene

23. mai 2026

Først lagt ut (Faktiske)

1. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

23. mai 2026

Sist bekreftet

1. mai 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • E30 HER-MUSCLE Intervention

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

Do to GDPR rules, we do not plan to share

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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