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RecruitingNCT03593148LIFETIMEUpdated Sep 1, 2021

The Effect of Lifestyle Treatment in Patients With Morbid Obesity

An interventional study of Lifestyle in Physical Capacity, Leg Strength and Eating Behavior, sponsored by Sykehuset i Vestfold HF. Recruiting at 1 site in Norway. Open to participants aged 18 Years to 99 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-09-01.

Sponsored by Sykehuset i Vestfold HF · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as recruiting.
  • Registered 1 year after the study started (first participant enrolled Apr 2017, registered Apr 2018).
  • Started Apr 2017; still recruiting 9 years 7 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
600
Allocation
Not applicable
Ages
18 Years to 99 Years
Sex
All
01

Study summary

The effect of lifestyle treatment on physical capacity, maximal strength, eating behavior and quality of life in patients with morbid obesity (LIFETIME)

Read the detailed description

In this study, the investigators will investigate whether more intensive day-based lifestyle treatment process have a better effect on weight loss and health-related quality of life than a previous treatment. Investigators also want to investigate whether patients with good physical capacity (maximal oxygen uptake) and bone strength (maximum bone strength) before initiating treatment and / or after 3 and 6 months intensive training may have greater weight loss 1 and 2 years after treatment than patients with lower physical capacity and bone strength.

02

Conditions studied

  • Physical Capacity
  • Leg Strength
  • Eating Behavior
  • Life of Quality

Browse trials for

03

In context

Feeding Behavior

985 studies on the registry are indexed under Feeding Behavior; 178 are open to participants now.

This study's planned enrollment of 600 is above the median of 77 across 700 interventional studies indexed under Feeding Behavior.

Browse Feeding Behavior studies →

Lead sponsor

Sykehuset i Vestfold HF is the lead sponsor of 23 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Treatment seeking morbidly obese patients ( ≥ 40 kg/m2 or BMI 35 to 39.9 kg/m2 with ≥ 1 co morbidity) attending the Vestfold Hospital Trust.

Exclusion criteria

Exclusion Criteria:

  • Uncompensated heart failure
  • Recent myocardial infarction or stroke (\<½ years)
  • Severe arrhythmia or heart failure
  • Unstable angina pectoris
  • Renal failure
  • Pregnancy
  • Severe eating disorders
  • Active substance abuse
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
600 participants (estimated)

Study arms

  • Other
    Lifestyle treatment

    Patients will be included in the Lifestyle treatment that is a existing treatment program at Vestfold Hospital Trust.

    Other: Lifestyle

Interventions

  • OtherLifestyle

    Lifestyle treatment

06

What researchers measure

Primary outcomes

  1. Weight change at 2-year follow up

    Effect of intensive treatment on weight loss changes at 2- year follow up. Body weight was measured with patients wearing light clothing and no shoes on Scanvaegt DS-530 (Århus, Denmark) at baseline and at 2-year follow up.

    Time frame: Changes from baseline body weight at 2-year follow up.

Secondary outcomes

  1. Maximal leg strength change at 2-year follow up

    Maximum leg strength will be measure with a bone press device (OPS161 Interchangeable Leg Press) at baseline, after 3-6 month and 1-2 years. The test will be conduct as an individual adapted protocol with gradual loading until voluntary maximum bone strength is achieve.

    Time frame: Changes from baseline maximal leg strenght at 2-year follow up.

  2. Physical capacity change at 2-year follow up

    Physical capacity will be measure as maximum oxygen uptake (VO2max) by indirect calorimetry (Jaeger Oxycone Pro) at baseline, after 3-6 month and 1-2 years. Indirect calorimetry is to be regard as a gold standard for measurement of maximum oxygen uptake.

    Time frame: Changes from baseline physical capacity at 2-year follow up.

  3. Health-related quality of life (HRQoL) - Short Form Health Survey (RAND-36), change at 2-year follow up

    The patient reported outcome measurements (PROMS) comprise three elements; generic and obesity specific health related quality of life (HRQoL) and obesity specific symptoms measured at baseline, 3 months, 6 months, 1 year and 2 years. The RAND-36 is a 36-item measure of generic HRQOL consisting of eight additive subscales (Physical Functioning, Role Physical, Bodily Pain, General Health, Vitality, Social Functioning, Role Emotional, and Mental Health) and two summary scores each based on four subscales (Physical Component Summary and Mental Component Summary). Scores on all subscales range from 0 to 100. Summary-scores will be norm-based, with mean (SD) 50 (10). Higher scores on all scales represent better HRQOL.

    Time frame: Changes from baseline RAND-36 at 2-year follow up.

  4. Health-related quality of life (HRQoL) - Impact on Weight Questionnaire (IWQOL-Lite), change at 2-year follow up

    The patient reported outcome measurements (PROMS) comprise three elements; generic and obesity specific health related quality of life (HRQoL) and obesity specific symptoms measured at baseline, 3 months, 6 months, 1 year and 2 years. 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.

    Time frame: Changes from baseline IWQOL-Lite at 2-year follow up.

  5. Health-related quality of life (HRQoL) - Weight-Related Symptom Measure (WRSM), change at 2-year follow up

    The patient reported outcome measurements (PROMS) comprise three elements; generic and obesity specific health related quality of life (HRQoL) and obesity specific symptoms measured at baseline, 3 months, 6 months, 1 year and 2 years. The WRSM is a 20-item measure for the presence and distress of 20 weight-related symptoms. The distress scores of the symptoms are reported on a six-point likert scale. Two summary scores are calculated; an additive score of presence of symptoms ranging from 1 to 20 and a symptom distress score for all symptoms. Symptom distress scores range from 0 to 100, with higher scores indicating a higher or worse total symptom distress.

    Time frame: Changes from baseline WRSM at 2-year follow up.

  6. Binge Eating Scale (BES), change at 2-year follow up

    The patient reported outcome measurements (PROMS) eating behavior at baseline, 3 months, 6 months, 1 year and 2 years. The Binge Eating Scale comprise 16 items assessing binge eating problems. Additive scores range between 0-46, with higher scores indicating greater problems. Cut-off scores have been established to determine binge severity, with "severe" represented by scores \> 27, "moderate" by scores 18-26, and "mild-none" by scores \< 17.

    Time frame: Changes from baseline BES at 2-year follow up.

  7. The Power of Food scale (PFS) change at 2-year follow up

    The patient reported outcome measurements (PROMS) eating behavior at baseline, 3 months, 6 months, 1 year and 2 years. The Power of Food scale assess both the psychological impact and respondent's responsiveness to a food-abundant environment. This is a 15-item scale whose items pertain to three situations: food being readily available in the environment but not physically present, food is physically present, but not tasted, and food is first tasted but not already consumed. The three subscales is scored 0-100 with higher scores indicating greater eating problems.

    Time frame: Changes from baseline PES at 2-year follow up.

  8. Weight change at 1-year follow up

    Effect of intensive treatment on weight loss changes after 1- year follow up Body weight was measured with patients wearing light clothing and no shoes on Scanvaegt DS-530 (Århus, Denmark) at baseline and at 1-year follow up.

    Time frame: Changes from baseline body weight at 1-year follow up.

  9. Three Factor Eating Questionnaire (TFEQ - R21)

    The patient reported outcome measurements (PROMS) eating behavior at baseline, 3 months, 6 months, 1 year and 2 years. TFEQ-R21 consists of 21 questions that measure cognitive and emotional conditions related to food intake, as well as degree of control over food intake. Each item scores either 0 or 1 point.

    Time frame: Changes from baseline TFEQ-R21 at 2-year follow up.

07

Study locations

1 of 1 sites recruiting
  • Jarle Berge
    Tønsberg, 3103, Norway
    Recruiting
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 1, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03593148
Lead sponsor
Sykehuset i Vestfold HF
Collaborators
University college of south-east Norway
Responsible party
Jarle Berge (Principal investigator, Sykehuset i Vestfold HF) — Principal investigator
First posted
Jul 19, 2018
Start date
Apr 1, 2017
Primary completion
Dec 23, 2025 (estimated)
Completion
Dec 23, 2025 (estimated)
Last update
Sep 1, 2021

Study contacts

Jarle Berge
Contact
jarle.berge@siv.no
+47 33134111
Jens Hertel, PhD
Contact
+4733342000
Jens Hertel, PhD
principal investigator · The Hospital of Vestfold

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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