Reflection of therapy progress in virtual reality for individuals affected by obesity: a pilot study

Obesity is a major health challenge, requiring the development of more effective interventions. Setting realistic goals and developing detailed plans that anticipate potential challenges can be helpful strategies for bridging the intention-behavior gap. Immersive technologies, such as virtual reality (VR), are considered to further support closing this gap by reducing the distance to one's future self.

This study investigates a novel VR-supported reflection exercise as an additional treatment module within a conservative obesity treatment regime. It examines its feasibility, acceptance and short- and medium-term effects on participants' therapy motivation, body dissatisfaction, self-esteem, depressive symptoms, and eating behavior. 23 participants (BMI: M = 43.44 kg/m², SD = 4.42) were presented with a real-time animated body avatar that had the average body shape for their individual height, initial weight, and realistic target weight (- 10%), and standard appearance matched in terms of hair and skin color. The avatar could be viewed from first-person and mirror perspectives. The exercise included reflective questions about their experience, well-being, daily life, and eating and movement behavior.

Participation and dropout rates of the VR-supported reflection exercise, user experience ratings, assessments on general discomfort and qualitative feedback demonstrated good feasibility and acceptance of the VR exercise. There were no measurable effects of a single session on clinical outcomes, including motivation to change, eating disorder psychopathology, self-esteem and depressive symptoms.

The VR-based reflection exercise was feasible and well-accepted. The sample was highly burdened with multimorbidity, severe obesity (grade III), and psychological stress. A clinical trial with sufficient dosage would be required to infer about clinical effects.

Level 4.