Wirksamkeit von allmählichem versus schnellem Gewichtsverlust (GoLow)
Vergleichende Wirksamkeit eines Programms zur schrittweisen Gewichtsabnahme und eines Programms zur schnellen Gewichtsabnahme (einschließlich einer energiearmen Diät) bei Gewichtsabnahme nach 1 Jahr bei Probanden mit Adipositas – eine randomisierte Parallelgruppen-Überlegenheitsstudie. (Die GoLow-Studie).
This randomized controlled trial aims to compare the 1-year effectiveness of an initial rapid weight loss (RWL) program and a gradual weight loss (GWL) program.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
A total of at least 286 participants will be randomized to either a 16-week rapid weight loss (RWL) program; [an 8-week low-energy-diet (<1000 kcal/day) - followed by an 8-week gradual increase in energy intake (4 weeks <1300 kcal/day and 4 weeks <1500 kcal/day)], or a 16-week gradual weight loss (GWL) program (controls); [estimated total energy expenditure minus 800-1000 kcal/day]. Thereafter, all participants (both groups) will undergo a 36-week comprehensive weight maintenance program.
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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-
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Tønsberg, Norwegen
- Vestfold Hospital Trust
-
-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
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• Willing and able to give informed consent for participation in the study
- Living in the eastern part of Norway, mainly Oslo, Buskerud, Vestfold and Akershus
- Understanding Norwegian language written and spoken easily
- BMI ≥30.0 kg/m2
- Stable body weight (<5 kg self-reported weight change) during the last 3 months before inclusion
Exclusion Criteria:
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• Pregnancy and breast-feeding mothers
- Suspected non-compliance with regards to visits and/or diet
- Severe chronic disease (endocrine disease, heart disease, neurological disease, lung disease, disease in the gastrointestinal tract, kidney disease, rheumatism or cancer).
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Single
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
|
Aktiver Komparator: Rapid weight loss (RWL) program
16-week rapid weight loss (RWL) program [8-week LED (<1000 kcal/day) - followed by an 8-week gradual increase in energy intake (4 weeks <1300 kcal/day and 4 weeks <1500 kcal/day)] followed by a 36-weight loss maintenance program. |
16-week rapid weight loss (RWL) program (8-week low energy diet (LED) followed by 8-week gradual increased energy intake) and a subsequent 36-week weight-maintenance follow-up |
|
Aktiver Komparator: Gradual weight loss (GWL) program
16-week GWL-program (estimated total energy expenditure minus 800-1000 kcal/day) followed by a 36-weight loss maintenance program. |
16-week gradual weight loss (GWL) program (moderate calorie restriction) and a subsequent 36-week weight-maintenance follow-up |
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Change in body weight from baseline to 12 months
Zeitfenster: Baseline to 1-year
|
Percent total body weight loss (%TBWL) at 12 months follow-up |
Baseline to 1-year
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Changes in anthropometric measures
Zeitfenster: 4-month and 1-year
|
Waist and hip circumference (cm) |
4-month and 1-year
|
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Changes in body composition 1
Zeitfenster: 4-month and 1-year
|
Bioelectrical Impedance Analysis (BIA) |
4-month and 1-year
|
|
Changes in body composition 2
Zeitfenster: 4-month and 1-year
|
Dual-energy X-ray Absorptiometry (DXA) in selected participants |
4-month and 1-year
|
|
Changes in lipids
Zeitfenster: 4-month and 1-year
|
Total-cholesterol, HDL-cholesterol, LDL-cholesterol and triglycerides (mmol/l) |
4-month and 1-year
|
|
Changes in blood pressure
Zeitfenster: 4-month and 1-year
|
Systolic and diastolic blood pressure (mm/Hg) |
4-month and 1-year
|
|
Changes in glucose parameters
Zeitfenster: 4-month and 1-year
|
HbA1c (mmol/mol) |
4-month and 1-year
|
|
Changes in CRP
Zeitfenster: 4-month and 1-year
|
CRP (mg/L) |
4-month and 1-year
|
|
Changes in Health Related Quality of Life 1
Zeitfenster: 4-month and 1-year
|
Generic questionnaire: Short Form-36 Health Survey, SF36. Each item is scored on a 0 to 100 range so that the lowest and highest possible scores are 0 and 100, respectively. Scores for each of the 8 domains and summary scores for physical and mental health will be calculated |
4-month and 1-year
|
|
Changes in Health Related Quality of Life 2
Zeitfenster: 4-month and 1-year
|
Obesity specific questionnaire: IWQOL-lite. The IWQOL-Lite is a 31-item measure of weight-related quality of life. There are five domain scores (Physical Function, Self-Esteem, Sexual Life, Public Distress and Work) and a total score. Scores for all domains and total score range from 0-100, with lower scores indicating greater impairment. |
4-month and 1-year
|
|
Changes in Health Related Quality of Life 3
Zeitfenster: 4-month and 1-year
|
Weight-related Symptom Measure (WRSM). The validated obesity specific WRSM measures 20 symptoms commonly related to being overweight or obese, including foot problems, joint pain, sensitivity to cold, shortness of breath, etc. using two different sets of items. The first set assesses whether or not a patient is experiencing specific symptoms, and the second set rates the level of the distress of the symptoms with values from zero ("not at all") to six ("bothers a very great deal"). The first set creates an additive scale summing symptoms from 0-20, while the second forms a symptom distress scale ranging from 0-120. |
4-month and 1-year
|
|
Changes in symptoms of depression and anxiety
Zeitfenster: 4-month and 1-year
|
Hospital Anxiety and Depression Scale (HADS). The validated generic HADS measures symptoms of anxiety and depression using 14 items scored from 0-3 It is decomposed into two domains measuring depression (HADS-D) and anxiety (HADS-A), both consisting of seven items yielding a score from 0-21. |
4-month and 1-year
|
|
Changes in eating behavior
Zeitfenster: 4-month and 1-year
|
The Three Factor Eating Questionnaire -R 21 (TFEQ-R21) measures eating behaviour and has been validated for use in individuals with obesity and will be used in the study. It consists of 21 items comprising three domain scores; (1) uncontrolled eating; assessing the tendency to lose control over eating when feeling hungry or when exposed to external stimuli, (2) cognitive restraint; assessing the conscious restriction of food intake to control body weight or body shape, and (3) emotional eating; assessing overeating related to negative mood states. The domain scores were transformed to 0-100 scales to facilitate comparison; a higher score indicates more uncontrolled, restraint, or emotional eating. |
4-month and 1-year
|
|
Change in weight from baseline to 4 months
Zeitfenster: 4-month
|
Percent total body weight loss (%TBWL) at 4 months follow-up |
4-month
|
|
Proportions of participants with a TBWL of ≥ 5%, ≥10% and ≥15% at 52-week
Zeitfenster: 1-year
|
TBWL of ≥ 5%, ≥10% and ≥15% at 52-week follow-up |
1-year
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Ermittler
Ermittler
- Hauptermittler: Jøran Hjelmesæth, Professor, The Hospital of Vestfold
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
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
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- GoLow
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