An app based ecological momentary intervention tool to enhance the treatment of obesity in young adolescents to maintain weight loss and improve wellbeing

Improving weight loss and wellbeing in adolescents with obesity via an Ecological Momentary - and CBT app-based intervention.

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN47384427

Enrollment

Registered

2021-10-14

Start date

2021-10-15

Completion date

Unknown

Last updated

2021-10-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Childhood obesity Nutritional, Metabolic, Endocrine

Interventions

Current interventions as of 14/10/2021: The Think Slim Junior APP consists of two parts: (1) an app-based Ecological Momentary Intervention and (2) an app-based Cognitive Behavioral Th

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adolescents (12-16 years old) with obesity (>140% overweight).

Exclusion criteria

Exclusion criteria: 1. Comorbid medical disorders that cause (a part of) the weight gain (i.e. serious thyroid problems) 2. Youngsters with medical problems where obesity is secondary

Design outcomes

Primary

Measure	Time frame
Current primary outcome measure as of 14/10/2021: BMI (kg/m²) as measured by: 1. Weight, measured at baseline, post (1 month), and follow-up (2 months and 6 months) 2. Height, measured at baseline, 1, 2, and 6 months Previous primary outcome measure: BMI (kg/m²) as measured by: 1. Weight, measured at baseline, post, and follow-up (3 months and 6 months) 2. Height, measured at baseline, post and follow-up (3 months and 6 months)	—

Measure

Time frame

Current primary outcome measure as of 14/10/2021: BMI (kg/m²) as measured by: 1. Weight, measured at baseline, post (1 month), and follow-up (2 months and 6 months) 2. Height, measured at baseline, 1, 2, and 6 months Previous primary outcome measure: BMI (kg/m²) as measured by: 1. Weight, measured at baseline, post, and follow-up (3 months and 6 months) 2. Height, measured at baseline, post and follow-up (3 months and 6 months)

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Secondary

Measure	Time frame
Current secondary outcome measures as of 14/10/2021: Measured at baseline and posttest (1 month) unless noted otherwise: 1. Quality of life (Kidscreen) (10 items) (also measured at 2 and 6 months follow-up) 2. Wellbeing (Child Depression Inventory, CDI) (27 items) (also measured at 2 and 6 months follow-up) 3. Wellbeing: global self-worth (Competentie Belevingsschaal voor Adolescenten; CBSA) (35 items) 4. Perception of health (Just health Perception Questionnaire) (6 items) 5. Eating behavior (Dutch Eating Behavior Questionnaire, adolescent version) (33 items) 6. Eating behavior (Power of Food Scale) (15 items) 7. Eating behavior (Binge eating items of Children-Eating Disorder Examination Questionnaire (3 items) 8. Satisfaction with Think Slim Junior APP & intention to continue using the app (Usability Questionnaire) (17 items) (only measured at posttest) Previous secondary outcome measures: Measured at baseline and posttest (1 month) unless noted otherwise: 1. Quality of life (Kidscreen) (10 items) (also measured at 3 months and 6 months follow-up) 2. Wellbeing (Child Depression Inventory, CDI) (27 items) (also measured at 3 months and 6 months follow-up) 3. Wellbeing: global self-worth (Competentie Belevingsschaal voor Adolescenten; CBSA) (35 items) 4. Perception of health (Just health Perception Questionnaire) (6 items) 5. Eating behavior (Dutch Eating Behavior Questionnaire, adolescent version) (33 items) 6. Eating behavior (Power of Food Scale) (15 items) 7. Eating behavior (Binge eating items of Children-Eating Disorder Examination Questionnaire (3 items) 8. Satisfaction with Think Slim Junior APP & intention to continue using the app (Usability Questionnaire)	—

Measure

Time frame

Current secondary outcome measures as of 14/10/2021: Measured at baseline and posttest (1 month) unless noted otherwise: 1. Quality of life (Kidscreen) (10 items) (also measured at 2 and 6 months follow-up) 2. Wellbeing (Child Depression Inventory, CDI) (27 items) (also measured at 2 and 6 months follow-up) 3. Wellbeing: global self-worth (Competentie Belevingsschaal voor Adolescenten; CBSA) (35 items) 4. Perception of health (Just health Perception Questionnaire) (6 items) 5. Eating behavior (Dutch Eating Behavior Questionnaire, adolescent version) (33 items) 6. Eating behavior (Power of Food Scale) (15 items) 7. Eating behavior (Binge eating items of Children-Eating Disorder Examination Questionnaire (3 items) 8. Satisfaction with Think Slim Junior APP & intention to continue using the app (Usability Questionnaire) (17 items) (only measured at posttest) Previous secondary outcome measures: Measured at baseline and posttest (1 month) unless noted otherwise: 1. Quality of life (Kidscreen) (10 items) (also measured at 3 months and 6 months follow-up) 2. Wellbeing (Child Depression Inventory, CDI) (27 items) (also measured at 3 months and 6 months follow-up) 3. Wellbeing: global self-worth (Competentie Belevingsschaal voor Adolescenten; CBSA) (35 items) 4. Perception of health (Just health Perception Questionnaire) (6 items) 5. Eating behavior (Dutch Eating Behavior Questionnaire, adolescent version) (33 items) 6. Eating behavior (Power of Food Scale) (15 items) 7. Eating behavior (Binge eating items of Children-Eating Disorder Examination Questionnaire (3 items) 8. Satisfaction with Think Slim Junior APP & intention to continue using the app (Usability Questionnaire)

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Countries

Belgium, France

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026