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Effektiviteten af ​​gradvist versus hurtigt vægttab (GoLow)

17. september 2026 opdateret af: Jøran Hjelmesæth, The Hospital of Vestfold

Sammenlignende effektivitet af et program for gradvist vægttab og et program for hurtigt vægttab (inklusive en lavenergidiæt) på 1-årigt vægttab hos forsøgspersoner med fedme - et randomiseret, parallel-gruppe, overlegenhedsforsøg. (GoLow-undersøgelsen).

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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

293

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

      • Tønsberg, Norge
        • Vestfold Hospital Trust

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • • 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:

  • • 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).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv 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

Aktiv 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

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in body weight from baseline to 12 months
Tidsramme: Baseline to 1-year

Percent total body weight loss (%TBWL) at 12 months follow-up

Baseline to 1-year

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Changes in anthropometric measures
Tidsramme: 4-month and 1-year

Waist and hip circumference (cm)

4-month and 1-year
Changes in body composition 1
Tidsramme: 4-month and 1-year

Bioelectrical Impedance Analysis (BIA)

4-month and 1-year
Changes in body composition 2
Tidsramme: 4-month and 1-year

Dual-energy X-ray Absorptiometry (DXA) in selected participants

4-month and 1-year
Changes in lipids
Tidsramme: 4-month and 1-year

Total-cholesterol, HDL-cholesterol, LDL-cholesterol and triglycerides (mmol/l)

4-month and 1-year
Changes in blood pressure
Tidsramme: 4-month and 1-year

Systolic and diastolic blood pressure (mm/Hg)

4-month and 1-year
Changes in glucose parameters
Tidsramme: 4-month and 1-year

HbA1c (mmol/mol)

4-month and 1-year
Changes in CRP
Tidsramme: 4-month and 1-year

CRP (mg/L)

4-month and 1-year
Changes in Health Related Quality of Life 1
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 1-year

TBWL of ≥ 5%, ≥10% and ≥15% at 52-week follow-up

1-year

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Jøran Hjelmesæth, Professor, The Hospital of Vestfold

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

11. april 2019

Primær færdiggørelse (Faktiske)

16. september 2021

Studieafslutning (Faktiske)

16. september 2021

Datoer for studieregistrering

Først indsendt

12. december 2018

Først indsendt, der opfyldte QC-kriterier

13. december 2018

Først opslået (Faktiske)

14. december 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • GoLow

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

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