This two-group, parallel, individually randomized controlled trial will evaluate a brief, live, online Acceptance and Commitment Therapy (ACT)-based physical literacy program among 60 socioeconomically disadvantaged adult women living with overweight. Participants will be randomized in a 1:1 ratio to either the intervention group or a waitlist control group.
The intervention consists of six weekly approximately 60-minute online group sessions integrating the six ACT processes with adult physical literacy education, guided movement, and graded home-based exercise snacks, followed by an independent-practice week and an approximately 60-minute booster session. Assessments will be conducted at baseline, immediately before the booster following completion of the six core sessions, and at post-booster follow-up. The study will compare changes between the intervention and waitlist control groups over the study period.
Eligibility required: (a) age 18 to 64 years old; (b) residence in Gümüşpala, Avcılar, Istanbul; (c) BMI of 25.0-29.9 kg/m²; (d) annual equivalized net disposable household income below TRY 144,690, the 60%-of-median threshold in the 2025 Turkish Statistical Institute poverty statistics, based on the 2024 income reference period (Turkish Statistical Institute, 2025); (e) no completion of high school (ISCED Levels 0-2; UNESCO Institute for Statistics, 2012); (f) ability to read and understand Turkish; (g) access to a smartphone, WhatsApp, and the internet; (h) willingness to complete all assessments; and (i) written informed consent.
pregnancy or childbirth within the previous six months; a medical or musculoskeletal condition, or professional advice, precluding or substantially restricting physical activity; concurrent participation in another structured weight-management, physical-activity, or psychological intervention; a cognitive or psychiatric condition substantially limiting comprehension or informed consent; or inability to complete study assessments.
Parallel
ACT-Based Physical Literacy Program
BehavioralParticipants receive the live online ACT-based physical literacy program consisting of six weekly approximately 60-minute group sessions, an independent-practice week, and an approximately 60-minute booster session.
Change From Baseline in Physical Literacy Scale for Adults (PLAS) Total Score
Change From Baseline in PERMA-Profiler Overall Well-Being Score
Change From Baseline in Psy-Flex Scale Score
Change From Baseline in Total Physical Activity Measured by the Global Physical Activity Questionnaire (GPAQ)
Change From Baseline in Body Mass Index (BMI)
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Navid Reha
Lead sponsor
Istanbul Aydın University
Sponsor institution
