Behavioral activation based on the Health Action Process Approach – Efficacy of a theory-based online intervention in depression

Behavioral activation based on the Health Action Process Approach – Efficacy of a theory-based online intervention in depression - InterAKTIV

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00024349

Enrollment

128

Registered

2021-01-29

Start date

2021-02-09

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

F32

Interventions

Group 1: Intervention group: Participants receive access to the web-based intervention, comprising 7 modules (45 minutes each, plus an introductory module), daily motivating SMS, weekly homework assig

Eligibility

Sex/Gender

All

Age

18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Depression diagnosis in clinical interview

Exclusion criteria

Exclusion criteria: current psychotherapy, current change of psychopharmaceuticals, exclusion diagnosis

Design outcomes

Primary

Measure	Time frame
Primary outcome is the change of depression severity, measured by the QIDS (Quick Inventory of Depressive Symptomatology, externally assessed during the telephone interview), between baseline (t1) and post-intervention (t2, eight weeks after randomization). In addition, depression severity will be assessed at follow-up (t3, six months after randomization).	—

Secondary

Measure	Time frame
1. Remission of depression (SCID-1, Structured clinical interview for DSM-V) 2. Depression response (PHQ-9; Patient Health Questionnaire-9) 3. Actitity behavior: Everyday activity (BADS; Behavioral Activation for Depression Scale) 4. Activity behavior: Physical activity (IPAQ-SF; International Physical Activity Questionnaire - Short Form) 5. Motivational and volitional indicators (outcome expectancies, motivational self-efficacy, intention, volitional self-efficacy, action planning, coping planning, action control) 6. Perseverative cognitive processes (RSQ-D; Response Style Questionnaire – German Version) 7. Side effects of the intervention (INEP; Inventar zu Erfassung negativer Effekte von Psychotherapie) All assessments take place at baseline (t1), eight weeks (t2) and six months after randomization (t3). Covid-19-related limitations are recorded at all three time points (self-report). Additionally, sociodemographic information and the initial motivational level will be assessed at baseline (t1; self-report). At t2, received health care services (FIMA) as well as satisfaction with the intervention will be assessed.	—

Measure

Time frame

1. Remission of depression (SCID-1, Structured clinical interview for DSM-V) 2. Depression response (PHQ-9; Patient Health Questionnaire-9) 3. Actitity behavior: Everyday activity (BADS; Behavioral Activation for Depression Scale) 4. Activity behavior: Physical activity (IPAQ-SF; International Physical Activity Questionnaire - Short Form) 5. Motivational and volitional indicators (outcome expectancies, motivational self-efficacy, intention, volitional self-efficacy, action planning, coping planning, action control) 6. Perseverative cognitive processes (RSQ-D; Response Style Questionnaire – German Version) 7. Side effects of the intervention (INEP; Inventar zu Erfassung negativer Effekte von Psychotherapie) All assessments take place at baseline (t1), eight weeks (t2) and six months after randomization (t3). Covid-19-related limitations are recorded at all three time points (self-report). Additionally, sociodemographic information and the initial motivational level will be assessed at baseline (t1; self-report). At t2, received health care services (FIMA) as well as satisfaction with the intervention will be assessed.

—

Countries

Germany

Contacts

Public ContactClaudia Mueller-Weinitschke

Abt. für Rehabilitationspsychologie und Psychotherapie, Institut für Psychologie, Albert-Ludwigs-Universität Freiburg

interaktiv@psychologie.uni-freiburg.de07612039439

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 13, 2026