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Metabolic Effects of Diet-Exercise Interventions in Obesity

8. Juli 2026 aktualisiert von: Elif Subaşı, Firat University

Metabolic Responses of Diet-Exercise Combinations in Women With Obesity: A Comparative Lifestyle Intervention Study With Different Diet Types

This study investigates the effects of different dietary strategies (ketogenic diet, intermittent fasting, and semi-vegetarian diet), alone or in combination with a structured home-based exercise program, on anthropometric, metabolic, and hormonal parameters in women with obesity. A total of 108 participants aged 19-45 years are allocated into nine groups, including control, exercise-only, diet-only, and combined intervention groups. Anthropometric outcomes (body weight, body mass index, and body fat percentage) and biochemical markers (glucose, insulin, adiponectin, IGF-1, irisin, and myostatin) are assessed at baseline and after a 6-week intervention period using bioelectrical impedance analysis and ELISA methods.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Tatsächlich)

108

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene

Akzeptiert gesunde Freiwillige

Ja

Beschreibung

Inclusion Criteria:

  • Medically and physically fit for exercise interventions.
  • No participation in any structured dietary programs within the previous 3 months.
  • Lack of orthopedic limitations that would prevent safe physical activity.

Exclusion Criteria:

  • Pregnancy or lactation.
  • Chronic conditions such as cancer, renal failure, or hepatic failure.
  • Diagnosed psychiatric disorders.
  • History of adverse reactions to venipuncture.
  • Inability or unwillingness to adhere to the assigned dietary and exercise intervention protocols.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Nicht randomisiert
  • Interventionsmodell: Fakultätszuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Kein Eingriff: Control (C)
This group consists of 12 individuals with normal weight who do not receive any dietary or exercise interventions. They maintain their habitual lifestyle, physical activity, and dietary patterns for 6 weeks.
Kein Eingriff: Obese (O)
This group consists of 12 individuals with obesity who do not receive any dietary or exercise interventions. They maintain their regular lifestyle, physical activity, and dietary habits for 6 weeks.
Experimental: Obese with exercise (OE)
This group consists of 12 individuals with obesity who participate in a structured home-based exercise program for 6 weeks, without any dietary modifications.
Verhalten: Home-Based Exercise Program
A 6-week structured home-based exercise program consisting of moderate-intensity activities designed for weight management and metabolic improvement.
Andere Namen:
  • Structured Physical Exercise
Experimental: Obese with exercise plus semi-vegetarian diet (OEVD)
This group consists of 12 individuals with obesity who follow a structured semi-vegetarian dietary protocol combined with a home-based exercise program for 6 weeks.
Verhalten: Home-Based Exercise Program
A 6-week structured home-based exercise program consisting of moderate-intensity activities designed for weight management and metabolic improvement.
Andere Namen:
  • Structured Physical Exercise
Sonstiges: Semi-Vegetarian Diet
A 6-week structured semi-vegetarian dietary protocol primarily based on plant foods with occasional inclusion of meat or fish, designed for caloric control and metabolic tracking.
Andere Namen:
  • Flexitarian Dietary Intervention
Experimental: Obese with semi-vegetarian diet (OVD)
This group consists of 12 individuals with obesity who follow a structured semi-vegetarian dietary protocol for 6 weeks, without participating in any exercise program.
Sonstiges: Semi-Vegetarian Diet
A 6-week structured semi-vegetarian dietary protocol primarily based on plant foods with occasional inclusion of meat or fish, designed for caloric control and metabolic tracking.
Andere Namen:
  • Flexitarian Dietary Intervention
Experimental: Obese with exercise plus intermittent fasting (OEIF)
This group consists of 12 individuals with obesity who follow a structured intermittent fasting protocol combined with a home-based exercise program for 6 weeks.
Verhalten: Home-Based Exercise Program
A 6-week structured home-based exercise program consisting of moderate-intensity activities designed for weight management and metabolic improvement.
Andere Namen:
  • Structured Physical Exercise
Sonstiges: Intermittent Fasting
A 6-week structured intermittent fasting protocol regulating specific eating and fasting windows each day to evaluate its effects on body composition and metabolic markers.
Andere Namen:
  • Time-Restricted Feeding (TRF)
Experimental: Obese with intermittent fasting (OIF)
This group consists of 12 individuals with obesity who follow a structured intermittent fasting protocol for 6 weeks, without participating in any exercise program.
Sonstiges: Intermittent Fasting
A 6-week structured intermittent fasting protocol regulating specific eating and fasting windows each day to evaluate its effects on body composition and metabolic markers.
Andere Namen:
  • Time-Restricted Feeding (TRF)
Experimental: Obese with exercise plus ketogenic diet (OEKD)
This group consists of 12 individuals with obesity who follow a structured ketogenic dietary protocol combined with a home-based exercise program for 6 weeks.
Verhalten: Home-Based Exercise Program
A 6-week structured home-based exercise program consisting of moderate-intensity activities designed for weight management and metabolic improvement.
Andere Namen:
  • Structured Physical Exercise
Sonstiges: Ketogenic Diet
A 6-week structured ketogenic dietary protocol characterized by high-fat, adequate-protein, and very low-carbohydrate intake to induce nutritional ketosis.
Andere Namen:
  • Very Low-Carbonhydrate Ketogenic Diet (VLCKD)
Experimental: Obese with ketogenic diet (OKD)
This group consists of 12 individuals with obesity who follow a structured ketogenic dietary protocol for 6 weeks, without participating in any exercise program.
Sonstiges: Ketogenic Diet
A 6-week structured ketogenic dietary protocol characterized by high-fat, adequate-protein, and very low-carbohydrate intake to induce nutritional ketosis.
Andere Namen:
  • Very Low-Carbonhydrate Ketogenic Diet (VLCKD)

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in Body Weight
Zeitfenster: Baseline and 6 weeks
Body weight will be measured in kilograms (kg) using a calibrated Bioelectrical Impedance Analysis (BIA) device (Omron Karadascan HBF-511, Japan). The outcome will evaluate the effectiveness of the 6-week lifestyle interventions on body mass reduction compared to baseline.
Baseline and 6 weeks

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in Body Mass Index (BMI)
Zeitfenster: Baseline and week 6
Body Mass Index will be calculated using the formula weight in kilograms divided by height in meters squared (kg/m²). Height will be measured using a stadiometer (Holtain Ltd., UK) and weight via a Bioelectrical Impedance Analysis (BIA) device (Omron Karadascan HBF-511, Japan).
Baseline and week 6
Change in Body Fat Percentage
Zeitfenster: Baseline and week 6
Body fat percentage (%) will be measured using a Bioelectrical Impedance Analysis (BIA) device (Omron Karadascan HBF-511, Japan) to evaluate the proportion of fat tissue relative to total body weight.
Baseline and week 6
Change in Skeletal Muscle Percentage
Zeitfenster: Baseline and week 6
Skeletal muscle percentage (%) will be measured using a Bioelectrical Impedance Analysis (BIA) device (Omron Karadascan HBF-511, Japan) to evaluate the proportion of muscle tissue relative to total body weight.
Baseline and week 6
Change in Fasting Blood Glucose
Zeitfenster: Baseline and week 6
Fasting blood glucose levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) method from venous blood samples to evaluate the effects of the interventions on glycemic control.
Baseline and week 6
Change in Fasting Insulin
Zeitfenster: Baseline and week 6
Fasting insulin levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) method from venous blood samples to assess pancreatic beta-cell function and insulin dynamics.
Baseline and week 6
Change in Adiponectin Levels
Zeitfenster: Baseline and week 6
Serum adiponectin levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) from venous blood samples to evaluate changes in adipokine secretion and insulin sensitivity.
Baseline and week 6
Change in Insulin-Like Growth Factor 1 (IGF-1) Levels
Zeitfenster: Baseline and week 6
Serum IGF-1 levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) from venous blood samples to evaluate alterations in growth hormone axis and metabolic adaptation.
Baseline and week 6
Change in Irisin Levels
Zeitfenster: Baseline and week 6
Serum irisin levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) from venous blood samples to track changes in myokine secretion in response to physical activity and dietary interventions.
Baseline and week 6
Change in Myostatin Levels
Zeitfenster: Baseline and week 6
Serum myostatin levels will be analyzed via Enzyme-Linked Immunosorbent Assay (ELISA) from venous blood samples to assess skeletal muscle mass regulation and myokine alterations.
Baseline and week 6

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Firat University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

30. Juli 2023

Primärer Abschluss (Tatsächlich)

15. Dezember 2023

Studienabschluss (Tatsächlich)

12. Januar 2024

Studienanmeldedaten

Zuerst eingereicht

1. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

8. Juli 2026

Zuerst gepostet (Tatsächlich)

10. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

10. Juli 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

8. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • FSU-OBES-DIETEX-2026-01

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

İndividual participant data will not be shared because participant consent for public data sharing was not obtained.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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