Overweight, Obesity, Sedentary Lifestlye
Conditions
Brief summary
The aim of the current study is to demonstrate that a commercial weight management diet (i.e. low energy density) influences satiation, hunger and satiety and leads to lower energy intake during ad-libitum meals and over a full day. We further seek to demonstrate the sustainability of this effect following 12- week weight loss on the weight management program. * We hypothesise that formulated (low energy) meals will lead to decreased hunger, greater fullness and reduced desire to eat compared to standard meals. * We hypothesise that the commercial weight management program will lead to greater weight loss compared to control program. * We hypothesise that formulated meals (high consumer acceptance) will improve hedonic control over eating (lower wanting for high fat food) * We hypothesise that the commercial weight management program will improve hedonic control over eating (reduced experience food cravings)
Interventions
BEHAVIORALWeight management program
Sponsors
University of Leeds
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* BMI of 28 - 45 kg/m2 * Reporting an interest in weight loss, not actively participating in a commercial weight loss program, * Not increased physical activity levels in the past 2-4 weeks * Able to eat most everyday foods and fruits and vegetables * Written informed consent to be given
Exclusion criteria
* Significant health problems that could cause confounding effects between intervention and control. * Taking any medication or supplements known to affect appetite or weight within the past month and/or during the study * Pregnant, planning to become pregnant or breastfeeding * History of anaphylaxis to food * Known food allergies or food intolerance * Smokers and those who have recently ceased smoking * Participants receiving systemic or local treatment likely to interfere with evaluation of the study parameters * Those who have previously taken part in a commercial weight loss program in the last 6 months? . * Participants who work in appetite or feeding related areas * Participants unable to consume foods used in the study * Participants who have had bariatric surgery * Participants with a history of eating disorder * Presence of untreated hypothyroidism * Inability to fully comply with intervention or study procedures * Insufficient English language skills to complete study questionnaires
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Food preference | Week 0 and week 14 | Measured changes in food preference and liking and wanting profiles for food (HF\<LF) following consumption of formulated test meal in comparison to equi-energetic control |
| Test Meal Energy Intake | Week 0 and week 12 | Measured reductions in ad-libitum energy intake following consumption of formulated test meal in comparison to control. |
| 24h Energy Intake | Week 0 and week 12 | Measured reduction in total within-day energy intake following consumption of formulated meals in comparison to control |
| Appetite sensations | Week 0 and week 14 | Measured reduction in hunger and increase in satiety quotient following consumption of formulated test meal in comparison to equi-energetic control |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Body Weight | Weekly from week 0 to week 12 | Measured change in weight and energy balance parameters over a 12 week period following participation in commercial weight management program compared to control group. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Food diary | Week 0 and week 12 | Intervention adherence and compensation through 1) food diary analysis. |
| Accelerometer | Week 0 and week 12 | Intervention adherence and compensation through accelerometer analysis. |
| Interview | Week 12 | Detailed feedback on participant experience of commercial weight management program through qualitative interview and marketing survey. |
Countries
United Kingdom
Outcome results
None listed