Overweight and obesity Nutritional, Metabolic, Endocrine Obesity
Conditions
Interventions
Participants were randomized into one of four conditions via a computer generated randomization sequence. All participants were set a weight loss goal to lose 4.56% of their baseline weight to lose ov
Sponsors
University of Leeds
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Identify themselves as motivated to lose weight 2. Have a BMI above 25 3. Age 18-65 years
Exclusion criteria
Exclusion criteria: 1. Have lost weight at an unsafe rate during the last year 2. Had experienced unexplained weight loss during the last year 3. Were taking (had taken during the last month) any medication that could influence the accumulation of expenditure of energy 4. Have any cardiac problems 5. Have uncontrolled hypertension 6. Have a genetic syndrome associated with obesity 7. Have untreated hyperthyroidism 8. Are on a specific food diet (e.g., Atkins diet) 9. Have a significant health problem (e.g., diabetes) 10. Have a history of anaphylaxis to food 11. Have undergone bariatric surgery 12. Have any planned future surgery of any kind 13. Have an eating disorder 14. Are pregnant or breastfeeding
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Weight (kg) 2. Fat mass (kg) Both measured using Bio-Impedance Analysis (Tanita model BC-420MA) at baseline (0 weeks), 4 weeks post baseline and at the end of the intervention (8 weeks) | — |
Secondary
| Measure | Time frame |
|---|---|
| All secondary outcome measures (except intervention acceptability measures) were taken at baseline (0 weeks), 4 weeks post baseline and at the end of the intervention (8 weeks): 1. Percentage body fat, measured using Bio-Impedance Analysis (Tanita model BC-420MA) 2. Visceral fat rating, measured using Bio-Impedance Analysis (Tanita model BC-420MA) 3. Muscle mass (kg), measured using Bio-Impedance Analysis (Tanita model BC-420MA) 4. Degree of obesity, measured using Bio-Impedance Analysis (Tanita model BC-420MA) 5. Body Mass Index, measured using Bio-Impedance Analysis (Tanita model BC-420MA) and a stadiometer (Seca Model 213) 6. Weight loss intention, assessed by a measure adapted from Schifter and Ajzen (1985) which averaged responses to four items on 7-point scales 7. Autonomous and controlled motivation, measured using the Treatment Self-Regulation Questionnaire (TSRQ) 8. Weight-loss self-efficacy, measured using the Weight Self Efficacy Lifestyle Questionnaire (WEL) 9. Intervention acceptability measures, assessed using a series of feedback questions distributed approximately 3 weeks after the final participant had their final measures taken. The time interval between baseline and the intervention acceptability measure therefore varied between participants, according to the time that the participant was recruited into the study. This time interval varied ranged from 11 weeks and 12 months. | — |
Countries
United Kingdom
Outcome results
None listed