Does Estrogen Blunt the Effects of Exercise Training on Glycemic Control
The Impact of 17beta-estradiol Treatment on Insulin Sensitivity, Immune Function, Inflammation and Skeletal Muscle Metabolism Following Exercise Training in Sedentary, Overweight Males
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Vito Pipitone, PhD Candidate
- Telefonnummer: 519-888-4567
- E-Mail: vito.pipitone@uwaterloo.ca
Studienorte
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Ontario
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Waterloo, Ontario, Kanada, N2L 3G1
- University of Waterloo
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Kontakt:
- Vito Pipitone, PhD Candidate
- Telefonnummer: 519-888-4567
- E-Mail: vito.pipitone@uwaterloo.ca
-
Hauptermittler:
- Michaela Devries-Aboud, PhD
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Unterermittler:
- Vito Pipitone, PhD Candidate
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Unterermittler:
- Emma Dare, PhD
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Unterermittler:
- Madeline Noble, MSc
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Unterermittler:
- Sean Gartner, MD
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
- Biological males (with no previous hormonal supplementation).
- Between the ages of 18-35 years old
- Non-smokers
- Sedentary individuals (i.e., engaging in intentional moderate-to-vigorous physical activity <2x/week)
- Body mass index 27-32 kg/m2
- Body fat % > 22%
Exclusion Criteria:
- Any state that can impact the hormonal milieu (e.g., drug/hormonal supplementation related to health).
- Usage of anti-inflammatory medications, >1 glucose lowering medications, insulin, platelet inhibitors, anti-coagulant medications or simvastatin, beta-blockers, weight loss medications (Orlistat, Saxenda, Contrave, Ozempic) or any medications known to affect protein metabolism (i.e., corticosteroids).
- Presence of cardiovascular, respiratory, metabolic, autoimmune or renal disease.
- Presence of any condition that makes the participant unable to participate in physical activity as determined using the CSEP Get Active Questionnaire.
- Presence of injury that restricts exercise performance.
- VO2max > 50th percentile for age.
- Previous (within the last 2 months) or current use of ergogenic aids (i.e. creatine).
- Previous or current use of weight loss medications, including liraglutide, semaglutide, orlistat, ozempic, etc.
- History and/or diagnosis of blood clots or family history of blood clot disorders.
- History of allergies or sensitivities to local anesthetic
- Ophthalmic vascular disease
- Classical migraines
- History of thromboembolic disease
- Consume 15 or more alcoholic drinks/week or 3 drinks per day
- Bleeding disorders
- Severe peripheral neuropathy
- Muscular dystrophy
- Prior bariatric surgery
- Osteoporosis/osteopenia
- Orthopaedic issues
- Presence of GI disorders (i.e., Colitis, Crohns disease, Celiac disease)
- Presence of liver disease or dysfunction (i.e., diagnosed NAFLD, NASH, cirrhosis, previous liver transplant)
- History of cancer
- Type 1 or 2 diabetes
- Presence of renal disorders (creatinine > 140)
- Uncontrolled hypertension (>140/90 mmHg)
- History of allergies or sensitivities to estradiol or to any ingredient in the formulation or component of the container
- History and/or diagnosis of blood clots or family history of blood clot disorders
- Have an implantable electronic device
- Medical psychiatric history of depression, bipolar, anxiety, suicidal ideation, etc.
- Inherited clotting disorders
- Chest pain or shortness of breath
- Inflammatory disorders (e.g., inflammatory bowel disorder)
- Significant weight loss in the 3-month period prior to the study (10% of total body weight)
- Any kind of major surgery recently
- Bleeding disorders
- Active or history of thromboembolic disease (including confirmed venous thromboembolism)
- Ophthalmic vascular disease
- Classical migraines
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Verdreifachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Experimental: Estrogen
1mg/d 17-beta estradiol x 2 day and 2mg/d 17-beta estradiol for 14 days
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2 weeks of high intensity interval training while either taking estrogen or placebo
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Placebo-Komparator: Placebo
400mg/d of glucose polymer x 16 days
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2 weeks of high intensity interval training while either taking estrogen or placebo
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Glucose AUC
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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Glucose AUC determined from blood samples taken during a 2h oral glucose tolerance test
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Visit 3 (baseline) and Visit 11 (Day 16)
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Insulin resistance/sensitivity
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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at rest (HOMA-IR) and during a 2 h oral glucose tolerance test (Matsuda index)
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Visit 3 (baseline) and Visit 11 (Day 16)
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Markers of insulin signaling
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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Western blot of the following markers: AMPKα Thr172 & total AMPKα; phosphorylated Akt Ser437 & total Akt; phosphorylated TBC1D4 Thr642 & total TBC1D4; phosphorylated TBC1D1 Ser237 & total TBC1D; total GLUT4 in human skeletal muscle in the fasted and insulin stimulated state
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
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Membrane bound GLUT4
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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GLUT4 content at the membrane in the fasted and insulin stimulated state (determined via immunofluorescence)
|
Visit 3 (baseline) and Visit 11 (Day 16)
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Peripheral blood mononuclear cells
Zeitfenster: Visit 2 (baseline) and Visit 10 (Day 14)
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determination of immune cell response to acute exercise
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Visit 2 (baseline) and Visit 10 (Day 14)
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Plasma cytokines from isolated PBMCs
Zeitfenster: Visit 2 (baseline) and Visit 10 (Day 14)
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pro- and anti-inflammatory cytokine content will be determine using a cytokine array and commercially available kits
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Visit 2 (baseline) and Visit 10 (Day 14)
|
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Mitochondrial content
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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determined using electron microscopy
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Visit 3 (baseline) and Visit 11 (Day 16)
|
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Mitochondrial respiration
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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skeletal muscle mitochondrial respiration determined using high-resolution respirometry
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Visit 3 (baseline) and Visit 11 (Day 16)
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intramyocellular lipid (IMCL) content
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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total and subcellular location-specific content and storage characteristics
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Visit 3 (baseline) and Visit 11 (Day 16)
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aerobic fitness (VO2max)
Zeitfenster: Visit 2 (baseline) and Visit 10 (Day 14)
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VO2max determined during a graded exercise test
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Visit 2 (baseline) and Visit 10 (Day 14)
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Sex hormone concentrations
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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Serum estradiol measured using commercially available kits
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Visit 3 (baseline) and Visit 11 (Day 16)
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Serum hormone concentrations
Zeitfenster: Visit 3 (baseline) and Visit 11 (Day 16)
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Serum progesterone measured using commercially available kits
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Visit 3 (baseline) and Visit 11 (Day 16)
|
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Sex hormone concentrations
Zeitfenster: Visit 3 (baseline) and Visit 11 (day 16)
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Serum testosterone measured using commercially available kits
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Visit 3 (baseline) and Visit 11 (day 16)
|
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Serum hormone concentrations
Zeitfenster: Visit 2 (baseline) and visit 10 (day 14)
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Serum growth hormone measured using commercially available kits prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
|
Visit 2 (baseline) and visit 10 (day 14)
|
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Serum hormone concentrations
Zeitfenster: Visit 2 (baseline) and visit 10 (Day 14)
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Serum glucagon measured using commercially available kits prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
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Visit 2 (baseline) and visit 10 (Day 14)
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Neurotransmitter concentration
Zeitfenster: Visit 2 (baseline) and Visit 10 (day 14)
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Serum epinephrine concentration measured using a commercially available kit prior to a maximal graded exercise test and immediately (t=0 min), 30 and 60 min after the graded exercise test.
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Visit 2 (baseline) and Visit 10 (day 14)
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Michaela Devries, PhD, University of Waterloo
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Stoffwechselerkrankungen
- Störungen des Glukosestoffwechsels
- Hyperinsulinismus
- Ernährungs- und Stoffwechselerkrankungen
- Insulinresistenz
- Motorik
- Bewegung
- Phänomen des Bewegungsapparates muskuloskelettal
- Muskuloskelettaler und neuronales physiologisches Phänomen
- Pharmazeutische Präparate
- Untersuchungstechniken
- Technologie, pharmazeutisch
- Übung
- Dosierungsformen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 46726
Plan für individuelle Teilnehmerdaten (IPD)
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Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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