BEYOND Weight Loss Maintenance Study

NCT ID: NCT02683798

Last Updated: 2021-04-28

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

63 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-04-12

Study Completion Date

2019-11-22

Brief Summary

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A study to determine the effectiveness of two weight loss maintenance interventions in Counterweight Plus, a structured weight management programme.

Detailed Description

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Introduction: Long-term maintenance of non-surgical weight loss remains the most significant problem in obesity treatment. This study will compare the effectiveness of two different weight loss maintenance strategies used as part of the Counterweight Plus weight management programme. This study will also evaluate the behavioural impact of the Counterweight Plus interventions and include process evaluations and cost analysis.

Methods: 80 patients and 10 practitioners will be recruited into the study. Main inclusion criteria for patients are:

Completed Counterweight Plus, which includes 12-20 weeks total diet replacement (TDR), 8 weeks food reintroduction (FR) and achieved \>10kg weight loss. All participants will be followed up for 18 months in total.

Results: The primary outcome of this study is the difference in weight change between the two groups at 6 months. Frequency of use of behavioural strategy will be quantified for both practitioners and patients during voice recorded consultations. The relationship between weight change and the use of behavioural strategy will be assessed.

Hypothesis: This study will establish if the novel intermittent use of formula diet strategy is more effective at preventing weight regain in comparison to usual care. It will also provide evidence of the frequency of use of behavioural strategies within routine Counterweight Plus delivery, as well as establishing the cost of the intervention.

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Continuous energy restriction

1 x formula food (202-209kcal) meal replacement per day

Group Type ACTIVE_COMPARATOR

Continuous energy restriction

Intervention Type DIETARY_SUPPLEMENT

1 x formula food (202-209kcal) meal replacement per day

Intermittent energy restriction

4 x formula food (202-209kcal) total diet replacement per day, on 2 days per week

Group Type EXPERIMENTAL

Intermittent energy restriction

Intervention Type DIETARY_SUPPLEMENT

4 x formula food (202-209kcal) total diet replacement per day, on 2 days per week

Interventions

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Continuous energy restriction

1 x formula food (202-209kcal) meal replacement per day

Intervention Type DIETARY_SUPPLEMENT

Intermittent energy restriction

4 x formula food (202-209kcal) total diet replacement per day, on 2 days per week

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Completed Counterweight Plus Total Diet Replacement and Food Reintroduction stages and achieved \>10kg weight loss

Exclusion Criteria

* People currently participating in another clinical research trial (not including BEYOND Weight Loss study)
Minimum Eligible Age

20 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Glasgow

OTHER

Sponsor Role collaborator

NHS Greater Glasgow and Clyde

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Michael Lean, FRCPS

Role: PRINCIPAL_INVESTIGATOR

University of Glasgow

Locations

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NHS Lothian

Edinburgh, , United Kingdom

Site Status

NHS Greater Glasgow and Clyde

Glasgow, , United Kingdom

Site Status

NHS Highland

Inverness, , United Kingdom

Site Status

Countries

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United Kingdom

References

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Brosnahan N, Hankey C, Leeds A, Leslie W, Thom G, Hutchison L, Govan L, Ross H, Lean MEJ. Diet strategies for maintaining substantial therapeutic weight loss: 78-week mixed methods randomised trial. Clin Nutr. 2025 Oct;53:188-198. doi: 10.1016/j.clnu.2025.08.009. Epub 2025 Aug 12.

Reference Type DERIVED
PMID: 40934815 (View on PubMed)

Other Identifiers

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GN15HN592

Identifier Type: -

Identifier Source: org_study_id

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