Evaluation of a Lifestyle Intervention After Bariatric Surgery

NCT ID: NCT03214471

Last Updated: 2021-04-27

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

153 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-02-20

Study Completion Date

2020-12-21

Brief Summary

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The aim of this trial is to evaluate the effect of a post-surgery 12-month lifestyle intervention compared to usual care upon post-surgery weight loss and changes that occur in body composition (relative amounts of body fat, muscle and bone), physical fitness and activity levels, diseases linked to obesity (e.g. diabetes, high blood pressure, high cholesterol level, sleep apnoea) and health-related quality of life (HRQoL) over a 12-month period.

Detailed Description

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People with severe obesity who are scheduled to undergo either primary gastric bypass or primary sleeve gastrectomy will be recruited from the Bariatric Clinics at University College London Hospital (UCLH) and the Whittington Hospital and asked to participate in an observational cohort study. Eligible patients will be given a participant information sheet (PIS) for BARI-LIFESTYLE Observational Study and informed consent will be sought. Recruited patient will attend for 4 research visits, timed to coincide with their clinic visits, at approximately 6 weeks before surgery (Visit 1), 3 month post-surgery (Visit 2), 6 months post-surgery (Visit 3) and 12 months post-surgery (Visit 4). Each research visit will include assessment of body weight, body composition (using bioelectrical impedance analysis), physical fitness and activity levels, obesity-associated co-morbidities, HRQoL and usual care laboratory investigations. Dual energy X-ray absorptiometry (DXA) scanning will be undertaken at Visit 1 and Visit 4, which is not a usual assessment for the post-surgery standard care. All of the research assessments will be done as part of this observational cohort study.

Immediately after surgery has been undertaken, BARI-LIFESTYLE Observational Study participants will be randomised to continue to receive usual care, or usual care plus lifestyle intervention (nutritional and behavioural tele-counselling, self-monitoring and a 12-week supervised tailored exercise programme). However, to avoid contamination between the intervention group and the usual care group, only those randomly allocated to the lifestyle intervention group will be informed of this. They will be given a PIS (BARI-LIFESTYLE Intervention Study) and informed consent will be sought. If the participants decline to take part in the lifestyle programme, they will remain in the control group (observational cohort study).

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The trial will be a two-arm, parallel group, single-blinded, single site RCT (embedded within an observational cohort study) conducted in London, United Kingdom (UK). A two-staged randomised consent design will be applied (See 8.2 Randomisation procedures). Recruitment will take place at the Bariatric Centre for Weight Management and Metabolic Surgery, University College London Hospitals (UCLH) and the Bariatric and Obesity Surgery Clinic at the Whittington Hospital. The trial will be carried out by the Centre for Obesity Research, Division of Medicine, University College London (UCL) at UCLH, which will be commenced in August 2017 with the expected total duration of 36 months. The total duration of each participation in the trial is approximately 12-16 months (12 months from the day of surgery). All participants will have to attend 4 research visits; baseline visit (approximately 6 weeks before surgery), then at approximately 3, 6, and 12-month post-surgery.
Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

SINGLE

Outcome Assessors
The investigator who will conduct the follow-up assessments at each visit will be blinded to participants' allocation and will not be involved in delivering any of the intervention. The statistician conducting the data analysis will be blind to group allocation.

Study Groups

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Usual Care

usual care provided by the NHS for patients undergoing bariatric surgery.

Group Type NO_INTERVENTION

No interventions assigned to this group

Intervention

usual care + BARI-LIFESTYLE intervention

Group Type EXPERIMENTAL

Lifestyle intervention

Intervention Type BEHAVIORAL

Nutritional and behavioural tele-counselling , self-monitoring and a 12-week supervised tailored exercise programme. Participants will receive a regular tele-counselling throughout the 12-month. Each session will take approximately 15 minutes, underpinned by behavioural psychological techniques. After their 3-month post-surgery assessment visit, participants in the BARI-LIFESTYLE Intervention Study will be enrolled in a supervised exercise programme at health facility gyms for 12 weeks.

Interventions

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Lifestyle intervention

Nutritional and behavioural tele-counselling , self-monitoring and a 12-week supervised tailored exercise programme. Participants will receive a regular tele-counselling throughout the 12-month. Each session will take approximately 15 minutes, underpinned by behavioural psychological techniques. After their 3-month post-surgery assessment visit, participants in the BARI-LIFESTYLE Intervention Study will be enrolled in a supervised exercise programme at health facility gyms for 12 weeks.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

1. Adult aged between 18 to 65 years old.
2. Planned to undergo either primary gastric bypass surgery or primary sleeve gastrectomy surgery and fulfilling NICE eligibility criteria for bariatric surgery.
3. Medically safe to participate in exercise programme.
4. Able to read and write in English.
5. Willing and able to provide written informed consent.
6. Able to comply with study protocol.
7. Able to attend a supervised tailored exercise session at UCLH weekly for 12 weeks.
8. Willing and able to wear a Fitbit wrist-based activity tracker device and an Actigraph device.

Exclusion Criteria

1. More than 200 kg of body weight (due to limitation of DXA Scanner).
2. Non-ambulatory.
3. Functional limitation.
4. Medical contraindication for exercise.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University College, London

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Rachel L Batterham, PhD FRCP

Role: PRINCIPAL_INVESTIGATOR

UCL

Locations

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University College London Hospitals NHS Foundation Trust

London, , United Kingdom

Site Status

Countries

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United Kingdom

References

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Reference Type DERIVED
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Other Identifiers

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16/0232

Identifier Type: -

Identifier Source: org_study_id

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