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Intragastric Balloon and Time-Restricted Eating for Weight Loss in Adults With Overweight or Obesity

2026年11月7日 更新者:Seher Şen、Mudanya University

Effects of Intragastric Balloon and Time-Restricted Intermittent Fasting Diet on Weight Loss and Metabolic Parameters in Adults With Overweight and Obesity

The goal of this non-randomized clinical study is to learn whether an intragastric balloon (IGB) and time-restricted eating (TRE; 16-hour daily fast with an 8-hour eating window), used alone or together, improve weight loss, body composition, and metabolic parameters in adults aged 18 to 65 years with overweight or obesity (body mass index 27.0 to 39.9 kg/m²). Participants are followed in four groups according to whether they have an IGB (placed as part of routine clinical care, not assigned by the study) and whether they choose to follow TRE: (1) standard nutrition therapy, (2) IGB plus standard nutrition therapy, (3) TRE plus standard nutrition therapy, and (4) IGB plus TRE plus standard nutrition therapy. All participants receive the same individualized energy-restricted diet, dietitian follow-up, behavioral education, and physical activity advice. Body weight and body composition are measured at baseline, 3 months, and 6 months; routine laboratory results are recorded at baseline and 6 months.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

This is a prospective, single-center, non-randomized, exploratory (pilot) study with a 2×2 factorial structure. The two factors are intragastric balloon (IGB; present/absent) and time-restricted eating (TRE; yes/no). IGB placement is not a study procedure: it is performed as routine clinical care according to the physician's indication and the patient's preference, and the investigators have no role in that decision. TRE is offered in the dietetics outpatient clinic; participants who wish to follow it are allocated to the TRE groups, and those who do not are followed with standard nutrition therapy alone.

All groups receive the same frequency of dietitian visits, the same behavioral education, comparable energy targets, and the same physical activity advice (7,500 to 10,000 steps per day), so that groups differ only in IGB status and TRE. Body composition is measured by multi-frequency bioelectrical impedance analysis. Laboratory values are taken from routine clinical test results; no additional blood samples are drawn. Dietary intake is assessed with 3-day food records and physical activity with participants' smartphone step counters.

At least 15 participants per group (60 in total) are planned. Main and interaction effects of IGB and TRE will be analyzed with two-way analysis of variance or general linear models, and changes over time with repeated-measures analysis of variance or linear mixed models, adjusting for age, sex, baseline body mass index, comorbidities, physical activity, and energy intake.

研究の種類

介入

入学 (推定)

60

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

  • 名前:Seher Şen, Assistant Professor
  • 電話番号:05393919700
  • メール:seherdalli@gmail.com

研究場所

    • Yıldırım
      • Bursa、Yıldırım、トルコ(Türkiye)
        • 募集
        • Yıldırım Doruk Hastanesi
        • コンタクト:
          • Yıldırım Doruk Hastanesi Seher ŞEN, Assistant Professor
          • 電話番号:05393919700
          • メール:seher.sen@mudanya.edu.tr

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

就学可能な年齢

18年~65年 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

  • Age 18 to 65 years
  • Body mass index (BMI) 27.0 to 39.9 kg/m²; for BMI 27.0 to 29.9 kg/m², at least one obesity-related comorbidity (e.g., insulin resistance, type 2 diabetes mellitus, hypertension, dyslipidemia)
  • BMI of 27 kg/m² or higher for at least 2 years
  • History of unsuccessful non-surgical weight-loss attempts
  • Willingness to participate and written informed consent

Exclusion Criteria:

  • Inflammatory bowel disease or other inflammatory conditions of the gastrointestinal tract (including esophagitis and hiatal hernia of 2 cm or larger)
  • Previous gastrointestinal surgery
  • History of upper gastrointestinal bleeding
  • Gastroparesis
  • Severe psychiatric illness
  • Active malignancy
  • Pregnancy or breastfeeding
  • Alcohol or substance dependence
  • Physical limitation preventing exercise
  • Contraindication to intragastric balloon placement

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:処理
  • 割り当て:非ランダム化
  • 介入モデル:階乗代入
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ:Standard Nutrition Therapy

Participants without an intragastric balloon who receive standard energy-restricted nutrition therapy only.

Individualized balanced diet with approximately 25% energy restriction from the estimated daily energy requirement (typically 1000 to 1400 kcal/day; protein 1.0 to 1.5 g/kg/day, carbohydrate 35 to 50% and fat 25 to 35% of energy), with regular dietitian follow-up, behavioral education, and advice to walk 7,500 to 10,000 steps per day.

アクティブコンパレータ:IGB + Standard Nutrition Therapy

Participants with an intragastric balloon (IGB) placed as part of routine clinical care who receive standard energy-restricted nutrition therapy.

Individualized balanced diet with approximately 25% energy restriction from the estimated daily energy requirement (typically 1000 to 1400 kcal/day; protein 1.0 to 1.5 g/kg/day, carbohydrate 35 to 50% and fat 25 to 35% of energy), with regular dietitian follow-up, behavioral education, and advice to walk 7,500 to 10,000 steps per day.

Endoscopically placed intragastric balloon, performed as part of routine clinical care based on physician indication and patient preference; placement is not assigned by the study. Diet after placement progresses through clear liquid, full liquid, pureed, and solid stages according to routine clinical practice.

実験的:TRE + Standard Nutrition Therapy

Participants without an intragastric balloon who follow time-restricted eating (TRE; 16-hour daily fast, 8-hour eating window) in addition to standard energy-restricted nutrition therapy.

Individualized balanced diet with approximately 25% energy restriction from the estimated daily energy requirement (typically 1000 to 1400 kcal/day; protein 1.0 to 1.5 g/kg/day, carbohydrate 35 to 50% and fat 25 to 35% of energy), with regular dietitian follow-up, behavioral education, and advice to walk 7,500 to 10,000 steps per day.

Daily food intake limited to an 8-hour eating window with a 16-hour fast. The recommended fasting period is 18:00 to 10:00; alternative 16-hour periods (such as 19:00 to 11:00 or 20:00 to 12:00) are allowed. Water and non-caloric beverages are permitted during the fasting period. Energy and macronutrient targets are identical to standard nutrition therapy. Duration: 6 weeks.

実験的:IGB + TRE + Standard Nutrition Therapy

Participants with an intragastric balloon (IGB) placed as part of routine clinical care who follow time-restricted eating (TRE; 16-hour daily fast, 8-hour eating window) in addition to standard energy-restricted nutrition therapy.

Individualized balanced diet with approximately 25% energy restriction from the estimated daily energy requirement (typically 1000 to 1400 kcal/day; protein 1.0 to 1.5 g/kg/day, carbohydrate 35 to 50% and fat 25 to 35% of energy), with regular dietitian follow-up, behavioral education, and advice to walk 7,500 to 10,000 steps per day.

Endoscopically placed intragastric balloon, performed as part of routine clinical care based on physician indication and patient preference; placement is not assigned by the study. Diet after placement progresses through clear liquid, full liquid, pureed, and solid stages according to routine clinical practice.

Daily food intake limited to an 8-hour eating window with a 16-hour fast. The recommended fasting period is 18:00 to 10:00; alternative 16-hour periods (such as 19:00 to 11:00 or 20:00 to 12:00) are allowed. Water and non-caloric beverages are permitted during the fasting period. Energy and macronutrient targets are identical to standard nutrition therapy. Duration: 6 weeks.

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Body weight
時間枠:Baseline, Month 3, Month 6

Kilograms, measured in light clothing without shoes (Tanita MC-780 MA)

Baseline, Month 3, Month 6
Body mass index
時間枠:Baseline, Month 3, Month 6

Weight and height combined to report BMI in kg/m²

Baseline, Month 3, Month 6
Percent total weight loss
時間枠:Month 3, Month 6

(Baseline weight - follow-up weight) / baseline weight × 100.

Month 3, Month 6
Percent excess weight loss
時間枠:Month 3, Month 6

(Baseline weight - follow-up weight) / (baseline weight - ideal weight) × 100; ideal weight at BMI 25 kg/m².

Month 3, Month 6
Fat mass
時間枠:Baseline, Month 3, Month 6

Kilograms, by multi-frequency bioelectrical impedance analysis

Baseline, Month 3, Month 6
Body fat percentage
時間枠:Baseline, Month 3, Month 6

Percent of body weight, by bioelectrical impedance analysis

Baseline, Month 3, Month 6
Muscle mass percentage
時間枠:Baseline, Month 3, Month 6

Percent of body weight, by bioelectrical impedance analysis

Baseline, Month 3, Month 6
Muscle mass
時間枠:Baseline, Month 3, Month 6

Kilograms, by bioelectrical impedance analysis

Baseline, Month 3, Month 6

二次結果の測定

結果測定
メジャーの説明
時間枠
Fasting plasma glucose
時間枠:Baseline, Month 6

Concentration in mg/dL from routine clinical laboratory results

Baseline, Month 6
fasting insulin (µIU/mL)
時間枠:Baseline, Month 6

Fasting serum insulin concentration in µIU/mL, obtained from routine clinical laboratory results.

Baseline, Month 6
Glycated Hemoglobin (HbA1c)
時間枠:Baseline, Month 6

Glycated hemoglobin (HbA1c) as a percentage of total hemoglobin, obtained from routine clinical laboratory results.

Baseline, Month 6
Total Cholesterol
時間枠:Baseline and Month 6

Serum total cholesterol concentration in mg/dL, obtained from routine clinical laboratory results.

Baseline and Month 6
High-Density Lipoprotein (HDL) Cholesterol
時間枠:Baseline and Month 6

Serum HDL cholesterol concentration in mg/dL, obtained from routine clinical laboratory results.

Baseline and Month 6
Triglycerides
時間枠:Baseline and Month 6

Serum triglyceride concentration in mg/dL, obtained from routine clinical laboratory results.

Baseline and Month 6
Alanine Aminotransferase (ALT)
時間枠:Baseline and Month 6

Serum ALT activity in U/L, obtained from routine clinical laboratory results

Baseline and Month 6
Aspartate Aminotransferase (AST)
時間枠:Baseline and Month 6

Serum AST activity in U/L, obtained from routine clinical laboratory results.

Baseline and Month 6
Serum Iron
時間枠:Baseline and Month 6

Serum iron concentration in µg/dL, obtained from routine clinical laboratory results.

Baseline and Month 6
Ferritin
時間枠:Baseline and Month 6

Serum ferritin concentration in ng/mL, obtained from routine clinical laboratory results.

Baseline and Month 6
Vitamin B12
時間枠:Baseline and Month 6

Serum vitamin B12 concentration in pg/mL, obtained from routine clinical laboratory results.

Baseline and Month 6
Folate
時間枠:Baseline and Month 6

Serum folate concentration in ng/mL, obtained from routine clinical laboratory results.

Baseline and Month 6
Sodium
時間枠:Baseline and Month 6

Serum sodium concentration in mmol/L, obtained from routine clinical laboratory results.

Baseline and Month 6
Potassium
時間枠:Baseline and Month 6

Serum potassium concentration in mmol/L, obtained from routine clinical laboratory results.

Baseline and Month 6
Daily energy intake
時間枠:Baseline and Month 6

Mean daily energy intake in kcal/day, calculated from a 3-day food record.

Baseline and Month 6
Daily Protein Intake
時間枠:Baseline and Month 6

Mean daily protein intake in g/day, calculated from a 3-day food record.

Baseline and Month 6
Daily Carbohydrate Intake
時間枠:Baseline and Month 6

Mean daily carbohydrate intake in g/day, calculated from a 3-day food record.

Baseline and Month 6
Daily Fat Intake
時間枠:Baseline and Month 6

Mean daily fat intake in g/day, calculated from a 3-day food record.

Baseline and Month 6
Daily Step Count
時間枠:Baseline and Month 6

Mean number of steps per day, reported by participants from their smartphone step counter.

Baseline and Month 6

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。

スポンサー

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 (実際)

2026年5月12日

一次修了 (推定)

2026年11月15日

研究の完了 (推定)

2026年12月1日

試験登録日

最初に提出

2026年11月7日

QC基準を満たした最初の提出物

2026年11月7日

最初の投稿 (実際)

2026年11月13日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月13日

QC基準を満たした最後の更新が送信されました

2026年11月7日

最終確認日

2026年11月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • MUDU-SBE-SS-06

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

IPD プランの説明

In accordance with the study protocol approved by the ethics committee and national data protection legislation (Law No. 6698 on the Protection of Personal Data), individual participant data will be accessible only to the research team and will not be shared with third parties. Aggregate results will be published in peer-reviewed journals.

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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

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