- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07649356
Significance of Estrogen Status for Muscle Function, Physical Fitness, and Physiological Health Parameters - a Comparison of Age-matched Groups of Women Before and After Menopause. (HER-MUSCLEX)
Effects of Estrogen on Muscle Gain During 12-weeks of Exercise in Post-menopausal Women
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 differences in pre and post menopausal women, in regards to muscle size, strength and function.
Focusing on postmenopausal females, an increasingly at-risk demographic, HER-MUSCLE addresses a critical gap in understanding how oestrogen influences muscle mass and function.
The project involves:
- 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.
- 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.
Tutkimuksen yleiskatsaus
Tila
Yksityiskohtainen kuvaus
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 differences in pre and post menopausal women, in regards to muscle size, strength and function.
Focusing on postmenopausal females, an increasingly at-risk demographic, HER-MUSCLE addresses a critical gap in understanding how oestrogen influences muscle mass and function.
The project involves:
- 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.
- 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.
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Mette Hansen, PhD
- Puhelinnumero: +4551666551
- Sähköposti: mhan@ph.au.dk
Opiskelupaikat
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Aarhus, Tanska, 8000
- Rekrytointi
- Aarhus University
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Ottaa yhteyttä:
- Mette Hansen, PhD
- Puhelinnumero: +4551666551
- Sähköposti: mhan@ph.au.dk
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Päätutkija:
- Mette Hansen, PhD
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Näytteenottomenetelmä
Tutkimusväestö
Participants will primarily be recruited from a radius of 50km from Aarhus.
Participants recruited will be age matched to participants in the main trial.
Kuvaus
Inclusion Criteria:
- Regular menstrual bleeding (21-35 days cycle).
- At least 9 menstrual cycles the last year
- Age >47 years old
- BMI 20-30
Exclusion Criteria:
- Only premenopausal women: Follicular stimulating hormone > 30 mmol/L
- Systematic strength training during the last year (> 1 strength training session per week)
- Systematic high intensity cardiovascular training during the last year (<2 times 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
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
Kohortit ja interventiot
Ryhmä/Kohortti |
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Post menopausal women
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Pre menopausal women
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Muscle mass
Aikaikkuna: 1 week
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Magnetic resonance imaging
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1 week
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Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Mitochondria Function in vivo measured as phosphocreatine recovery rate
Aikaikkuna: 1 weeks
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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).
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1 weeks
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Mitochondria Function in vitro measured as maximal oxygen consumption
Aikaikkuna: 1 weeks
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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.
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1 weeks
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Body composition
Aikaikkuna: 1 weeks
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DXA
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1 weeks
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Satelitte cells
Aikaikkuna: 1 weeks
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Histochemical Analysis of Muscle tisse
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1 weeks
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Muscle fiber cross-sectional Area
Aikaikkuna: 1 weeks
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Histochemical Analysis of Muscle Tissue
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1 weeks
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Expression of Muscle proteins
Aikaikkuna: 1 weeks
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Western blotting analysis
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1 weeks
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FACS Analysis
Aikaikkuna: 1 weeks
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FACS analysis to quantify and isolate Muscle satelitte celss, fibro-adipogenic progenitors and macrofages
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1 weeks
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Muscle Strength
Aikaikkuna: 1 weeks
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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
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1 weeks
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Functional tests
Aikaikkuna: 1 weeks
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Includes counter-movement jump on a speed force-platform (Swift performance, Australia).
To measure dexterity, the nine-hole peg test will be applied.
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1 weeks
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Cardiovascular fitness
Aikaikkuna: 1 week
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Vo2max test on a bike and estimated via Ventriject
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1 week
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Maximal fat oxidation rate
Aikaikkuna: 1 week
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Bike test with increasing intensity steps
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1 week
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Resisting metabolic rate
Aikaikkuna: 1 week
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1 week
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Questionaires
Aikaikkuna: 1 week
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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"
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1 week
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Physical Activity Level
Aikaikkuna: 1 week
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Accelerometers
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1 week
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Flexibility
Aikaikkuna: 1 week
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sit-and-reach test
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1 week
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Knee laxity
Aikaikkuna: 1 week
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Lachmeter test
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1 week
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Protein expression in adipose tissue
Aikaikkuna: 1 week
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Two adipose tissue biopsies will be obtained from each participant by a trained physician.
Western blotting analysis of expression of proteins related to lipolysis and lipogenesis
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1 week
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Blood pressure
Aikaikkuna: 1 week
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1 week
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Blood volume
Aikaikkuna: 1 week
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Determination of blood volume and haemoglobin mass by the carbon-monoxide rebreathing method
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1 week
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Muut tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Blood analysis
Aikaikkuna: 1 week
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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-alb
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1 week
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Dairy record registration
Aikaikkuna: 1 week
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A total of five days prior to the test
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1 week
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Height
Aikaikkuna: 1 week
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1 week
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Body mass
Aikaikkuna: 1 week
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1 week
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Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Mette Hansen, PhD, Aarhus University, Department of Public Health
Julkaisuja ja hyödyllisiä linkkejä
Hyödyllisiä linkkejä
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Todellinen)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Muut tutkimustunnusnumerot
- E30 HER-MUSCLE cross sectional
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
Lääke- ja laitetiedot, tutkimusasiakirjat
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