Obesity and depression – development, acceptance, effectiveness and cost-effectiveness of a self-help strengthening online coach

Obesity and depression – development, acceptance, effectiveness and cost-effectiveness of a self-help strengthening online coach - @ktivPLUS

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00036178

Enrollment

190

Registered

2025-06-24

Start date

2025-11-22

Completion date

Unknown

Last updated

2026-06-22

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

Conditions

Psychological burden E66

Interventions

Group 1: Intervention group: Access to an unguided online intervention for improving mental health in people with obesity (14 modules, each lasting 20–40 minutes

recommended usage: 1 module per week

flexible use regarding order and timing) Group 2: Active control group: Access to an online bibliotherapy (informational website) on mental health and obesity (flexible use regarding order and timing)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: BMI >= 30, PHQ-8 >= 5, internet access, sufficient German language skills, informed consent

Exclusion criteria

Exclusion criteria: current suicidal tendencies (BDI-II suicide item > 1), no contact person in crisis situations (e.g. GP), current psychotherapy, unstable psychopharmacological medication in the last 6 weeks

Design outcomes

Primary

Measure	Time frame
Depressive symptoms at Follow-Up (FU1 after four months): Beck Depression Inventory (BDI-II)	—

Secondary

Measure	Time frame
At Follow-Up (FU1 after four months): Anxiety: Generalized Anxiety Disorder 2-item (GAD-2), Quality of Life: Quality of life Short Form (SF-12), Activities: Leisure and Sport Activity Questionnaire , Self-efficacy (EPAS), Resilience: Brief Resilience Scale (BRS), Mental Health literacy: Mental Health Literacy Survey-Germany-Questionnaire 24 (MHLS-Q24), Digital health literacy: eHealth Literacy Scale (eHEALS), Stress: Perceived Stress Questionnaire (PSQ-20), Sleep quality: COPD and Asthma Sleep Impact Scale (CASIS), sick leave days, presenteeism, Subjective Prognostic Employment Scale (SPE), Body mass index (BMI), Readiness to achieve weight reduction (Readiness Ruler), Weight management activities, Self-stigma: Weight Self-Stigma Questionnaire (WSSQ), Acceptability of intervention/control condition (SUS), Satisfaction with intervention/control condition, Uptake/adherence of intervention/control condition, Assessment of healthcare utilization and costs + medication (FIMA) (short adapted version)	—

Measure

Time frame

At Follow-Up (FU1 after four months): Anxiety: Generalized Anxiety Disorder 2-item (GAD-2), Quality of Life: Quality of life Short Form (SF-12), Activities: Leisure and Sport Activity Questionnaire , Self-efficacy (EPAS), Resilience: Brief Resilience Scale (BRS), Mental Health literacy: Mental Health Literacy Survey-Germany-Questionnaire 24 (MHLS-Q24), Digital health literacy: eHealth Literacy Scale (eHEALS), Stress: Perceived Stress Questionnaire (PSQ-20), Sleep quality: COPD and Asthma Sleep Impact Scale (CASIS), sick leave days, presenteeism, Subjective Prognostic Employment Scale (SPE), Body mass index (BMI), Readiness to achieve weight reduction (Readiness Ruler), Weight management activities, Self-stigma: Weight Self-Stigma Questionnaire (WSSQ), Acceptability of intervention/control condition (SUS), Satisfaction with intervention/control condition, Uptake/adherence of intervention/control condition, Assessment of healthcare utilization and costs + medication (FIMA) (short adapted version)

—

Countries

Germany

Contacts

Public ContactMargrit Löbner

Institut für Sozialmedizin, Arbeitsmedizin und Public Health (ISAP), Medizinische Fakultät, Universität Leipzig

margrit.loebner@medizin.uni-leipzig.de+49 341 97 24 591

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 29, 2026