Does Estrogen Blunt the Effects of Exercise Training on Glycemic Control
2026年8月25日 更新者:Michaela Devries-Aboud、University of Waterloo
The Impact of 17beta-estradiol Treatment on Insulin Sensitivity, Immune Function, Inflammation and Skeletal Muscle Metabolism Following Exercise Training in Sedentary, Overweight Males
Previous research has found that males and females respond differently to exercise training, particularly with respect to improvements in blood sugar control and immune system health.
This is crucial since insulin resistance, which can lead to type 2 diabetes and other health problems, affects millions of Canadians.
People with insulin resistance often have higher inflammation.
Exercise is known to improve insulin resistance and reduce inflammation, but females seem to benefit less from exercise compared to men.
The investigators believe this difference might be due to estrogen, a hormone that helps regulate blood sugar (in non-exercising conditions) and reduce inflammation.
Females have higher estrogen levels, which might explain their ability to regulate resting blood sugar control and also immune function at rest.
Our research will investigate how estrogen influences the acute and chronic effects of exercise males.
The investigators will study how estrogen influence's the body's response to exercise, particularly in terms of reducing inflammation and improving blood sugar levels as well as immune function.
Overweight and obese males will undergo 2 weeks of high intensity interval training while taking either an estrogen supplement or placebo.
Prior to and following training males will undergo an assessment of maximal fitness (VO2max test) and an oral glucose tolerance test.
Prior to and following the acute exercise test blood samples will be taken to determine the acute effects of exercise on immune cell function and inflammation.
Prior to and during the oral glucose tolerance test participants will have blood samples taken to determine glucose handling and insulin sensitivity.
They will also have a muscle biopsy taken prior to and 1h into the oral glucose tolerance test to determine the effects of estrogen supplementation on insulin signaling, mitochondrial content and function, fat metabolism and fat storage in skeletal muscle.
調査の概要
状態
状態
まだ募集していません
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
介入
入学 (推定)
入学
24
段階
段階
- 適用できない
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究連絡先
研究連絡先
- 名前:Vito Pipitone, PhD Candidate
- 電話番号:519-888-4567
- メール:vito.pipitone@uwaterloo.ca
研究場所
-
-
Ontario
-
Waterloo、Ontario、カナダ、N2L 3G1
- University of Waterloo
-
コンタクト:
- Vito Pipitone, PhD Candidate
- 電話番号:519-888-4567
- メール:vito.pipitone@uwaterloo.ca
-
主任研究者:
- Michaela Devries-Aboud, PhD
-
副調査官:
- Vito Pipitone, PhD Candidate
-
副調査官:
- Emma Dare, PhD
-
副調査官:
- Madeline Noble, MSc
-
副調査官:
- Sean Gartner, MD
-
-
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
はい
説明
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
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:基礎科学
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:トリプル
アーム数
2
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
実験的:Estrogen
1mg/d 17-beta estradiol x 2 day and 2mg/d 17-beta estradiol for 14 days
|
2 weeks of high intensity interval training while either taking estrogen or placebo
|
|
プラセボコンパレーター:Placebo
400mg/d of glucose polymer x 16 days
|
2 weeks of high intensity interval training while either taking estrogen or placebo
|
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Glucose AUC
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
Glucose AUC determined from blood samples taken during a 2h oral glucose tolerance test
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Insulin resistance/sensitivity
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
at rest (HOMA-IR) and during a 2 h oral glucose tolerance test (Matsuda index)
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Markers of insulin signaling
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
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)
|
|
Membrane bound GLUT4
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
GLUT4 content at the membrane in the fasted and insulin stimulated state (determined via immunofluorescence)
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Peripheral blood mononuclear cells
時間枠:Visit 2 (baseline) and Visit 10 (Day 14)
|
determination of immune cell response to acute exercise
|
Visit 2 (baseline) and Visit 10 (Day 14)
|
|
Plasma cytokines from isolated PBMCs
時間枠:Visit 2 (baseline) and Visit 10 (Day 14)
|
pro- and anti-inflammatory cytokine content will be determine using a cytokine array and commercially available kits
|
Visit 2 (baseline) and Visit 10 (Day 14)
|
|
Mitochondrial content
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
determined using electron microscopy
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Mitochondrial respiration
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
skeletal muscle mitochondrial respiration determined using high-resolution respirometry
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
intramyocellular lipid (IMCL) content
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
total and subcellular location-specific content and storage characteristics
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
aerobic fitness (VO2max)
時間枠:Visit 2 (baseline) and Visit 10 (Day 14)
|
VO2max determined during a graded exercise test
|
Visit 2 (baseline) and Visit 10 (Day 14)
|
|
Sex hormone concentrations
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
Serum estradiol measured using commercially available kits
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Serum hormone concentrations
時間枠:Visit 3 (baseline) and Visit 11 (Day 16)
|
Serum progesterone measured using commercially available kits
|
Visit 3 (baseline) and Visit 11 (Day 16)
|
|
Sex hormone concentrations
時間枠:Visit 3 (baseline) and Visit 11 (day 16)
|
Serum testosterone measured using commercially available kits
|
Visit 3 (baseline) and Visit 11 (day 16)
|
|
Serum hormone concentrations
時間枠:Visit 2 (baseline) and visit 10 (day 14)
|
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)
|
|
Serum hormone concentrations
時間枠:Visit 2 (baseline) and visit 10 (Day 14)
|
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.
|
Visit 2 (baseline) and visit 10 (Day 14)
|
|
Neurotransmitter concentration
時間枠:Visit 2 (baseline) and Visit 10 (day 14)
|
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.
|
Visit 2 (baseline) and Visit 10 (day 14)
|
協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
捜査官
捜査官
- 主任研究者:Michaela Devries, PhD、University of Waterloo
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (推定)
研究開始
2026年8月1日
一次修了 (推定)
一次修了
2027年4月1日
研究の完了 (推定)
研究の完了
2027年4月1日
試験登録日
最初に提出
最初に提出
2026年8月14日
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
2026年8月25日
最初の投稿 (実際)
最初の投稿
2026年8月27日
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
2026年8月27日
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
2026年8月25日
最終確認日
最終確認日
2026年8月1日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
その他の研究ID番号
- 46726
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
いいえ
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
いいえ
米国FDA規制機器製品の研究
いいえ
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。