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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT04953299
Other study ID # FITRCT
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date October 2021
Est. completion date October 2022

Study information

Verified date September 2021
Source University of Plymouth
Contact Sarah Greene, Bsc, Ma
Phone 07496923808
Email sarah.greene@plymouth.ac.uk
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The rise in obesity over the last two decades has led to an increased need to support individuals to lose weight but also reduce costs for healthcare settings. A review of group interventions for those with severe obesity concluded that group interventions are not only cost effective but also have good outcomes in terms of weight loss. A systematic review of individual and group based interventions for treating obesity found that group interventions were more effective but that the domain needed to be further explored. Functional Imagery Training is a theoretically informed intervention that utilises client's intrinsic motivation to elicit effective behaviour change. It has drawn upon aspects of motivational interviewing and the use of imagery to develop an intervention that has been effective in many aspects including maintained weight loss when used on a 1:1 basis. The investigators will conduct a Randomised Control Trial to test group-based delivery of FIT using the virtual platform Zoom versus the NHS 12 week online program as the current standard of what individuals seeking to lose weight can access independently.


Description:

In England two thirds of the population are overweight, as defined by a body mass index (BMI) of 25 kg/m2 or more and nearly half of these have obesity as defined by a BMI of 30 kg/m-2 or more. Subsequently healthcare costs increase alongside the increasing prevalence of obesity and overweight with approximately 1.8% of the National Health Services (NHS) government budget and around 7.1% of all deaths being attributed to elevated BMI in 2014. Alongside the increased health risk associated with obesity, perceived quality of life declines also with increasing BMI. Tackling the obesity epidemic could therefore lead to better physical and mental health amongst a high proportion of the population. The rise in obesity over the last two decades has led to an increased need to support individuals to lose weight but also reduce intervention costs. A review of group interventions for tier 3 services (severe obesity/ those with co-morbidities) found that group interventions are a cost effective method of treatment which demonstrate good results in terms of weight loss. Including the role of behaviour change in weight management is vital in ensuring the adoption and maintenance of new, long term skills which will help support maintaining weight loss. Functional Imagery Training (FIT) is a theoretically informed intervention that utilises clients' intrinsic motivation and mental imagery to elicit effective behaviour change. It uses the well- established, person-centred approach of motivational interviewing. The mental imagery exercises are designed to strengthen motivation, consolidate plans for change, and build the person's confidence that they can succeed. Research demonstrates the emotive power of mental imagery and the shift from short-term rewards to longer term goals. Delivered face to face, one-to-one, FIT has been shown to elicit behaviour changes to support weight loss over a sustained period of 12 months. The investigators conducted a randomised controlled trial of one-to-one FIT compared to motivational interviewing which demonstrated those in the FIT group experienced greater weight loss at 6 months post-allocation compared to the motivational interview group and continued weight loss for the FIT group only at 12m, 6 months after intervention ended. There is a need to establish if FIT remains efficacious and cost-effective when delivered to groups. The investigators will conduct a randomised control trial to test group-based delivery of FIT using the virtual platform Zoom. The current climate surrounding the increased need for remote-accessed services has allowed the investigators to explore the potential use of FIT online. There are many benefits to remote access interventions including reduced costs and travel time for the patients, more convenience and flexibility for patients and the reduced amount of clinic time for practitioners and patients.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 150
Est. completion date October 2022
Est. primary completion date October 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Aged over 18 years - BMI over 30 kg/m2 - Access to an internet accessible device with camera and microphone facilities such as a smartphone, laptop, tablet or PC - Access to weighing scales and a tape measure to self-report weight and waist measurements. Exclusion Criteria: - Current pregnancy - Not fluent in English at a level that would allow them to participate in a group - Not willing to be randomised - Not willing to be part of a group - Not able to complete baseline data - Unable to give informed consent

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Functional Imagery training
Behavioural intervention focused upon motivation and reaching achievable goals.
NHS 12 week weight loss programme
The plan is designed to help individuals lose weight at a safe rate of 0.5kg to 1kg (1lb to 2lb) each week by sticking to a daily calorie allowance and introducing exercise.

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
University of Plymouth National Institute for Health Research, United Kingdom

References & Publications (1)

Solbrig L, Whalley B, Kavanagh DJ, May J, Parkin T, Jones R, Andrade J. Functional imagery training versus motivational interviewing for weight loss: a randomised controlled trial of brief individual interventions for overweight and obesity. Int J Obes (Lond). 2019 Apr;43(4):883-894. doi: 10.1038/s41366-018-0122-1. Epub 2018 Sep 5. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Body mass index (BMI) change kg/m2 where kg is a person's weight in kilograms and m2 is their height in metres squared Change in BMI from baseline to 12 months
Primary waist circumference change Measured in centimetres Change in waist circumference from baseline to 12 months
Secondary EQ-5D-5L change (EuroQol-5D-5L) Questionnaire score maximum 25, minimum 5, lower scores refer to better outcomes. Change in EQ-5D-5L score from baseline to 12 months
Secondary ICECAP-A change (ICEpop CAPability measure for Adults) Questionnaire score, maximum 20 minimum 5, higher scores refer to better outcomes. Change in ICECAP-A score from baseline to 12 months
Secondary Health economics change Descriptive score derived from a survey of service use Change in service use from baseline to 12 months
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