Assessing the Clinical Efficacy of a Virtual Reality Tool for the Treatment of Obesity: Randomized Controlled Trial.
Virtual reality (VR) interventions, based on cognitive behavioral therapy principles, have been proven effective as complementary tools in managing obesity and have been associated with promoting healthy behaviors and addressing body image concerns. However, they have not fully addressed certain underlying causes of obesity, such as a lack of motivation to change, low self-efficacy, and the impact of weight stigma interiorization, which often impede treatment adherence and long-term lifestyle habit changes. To tackle these concerns, this study introduces the VR self-counseling paradigm, which incorporates embodiment and body-swapping techniques, along with motivational strategies, to help people living with obesity effectively address some of the root causes of their condition.
This study aims to assess the clinical efficacy of ConVRself (Virtual Reality self-talk), a VR platform that allows participants to engage in motivational self-conversations.
A randomized controlled trial was conducted with 68 participants from the bariatric surgery waiting list from the obesity unit of the Vall d'Hebron University Hospital in Barcelona, Spain. Participants were assigned to 1 of 3 groups: a control group (CG), which only received treatment as usual from the obesity unit; experimental group 1 (EG1), which, after intensive motivational interviewing training, engaged in 4 sessions of VR-based self-conversations with ConVRself, and underwent embodiment and body-swapping techniques; and experimental group 2 (EG2), which engaged in 4 VR-based sessions led by a virtual counselor with a prerecorded discourse, and only underwent the embodiment technique. In the case of both EG1 and EG2, the VR interventions were assisted by a clinical researcher. Readiness to change habits, eating habits, and psychological variables, as well as adherence and satisfaction with ConVRself were measured at baseline, after the intervention, 1 week after the intervention, and 4 weeks after the intervention.
Regarding the primary outcomes, EG1 (24/68, 35%) and EG2 (22/68, 32%) showed significant improvements in confidence to lose weight compared to the CG (22/68, 32%) at all assessment points (β=-.16; P=.02). Similarly, EG1 demonstrated a significant increase after the intervention in readiness to exercise more compared to the CG (β=-.17; P=.03). Regarding the secondary outcomes, EG1 participants showed a significant reduction in uncontrolled eating (β=.71; P=.01) and emotional eating (β=.29; P=.03) compared to the CG participants, as well as in their anxiety levels compared to EG2 and CG participants (β=.65; P=.01). In addition, participants from the experimental groups reported high adherence and satisfaction with the VR platform (EG1: mean 59.82, SD 4.00; EG2: mean 58.43, SD 5.22; d=0.30, 95% CI -0.30 to 0.89).
This study revealed that using VR self-conversations, based on motivational interviewing principles, may have benefits in helping people with obesity to enhance their readiness to change habits and self-efficacy, as well as reduce dysfunctional eating behaviors and anxiety.
ClinicalTrials.gov NCT05094557; https://www.clinicaltrials.gov/study/NCT05094557.
Anastasiadou D
，Herrero P
，Garcia-Royo P
，Vázquez-De Sebastián J
，Slater M
，Spanlang B
，Álvarez de la Campa E
，Ciudin A
，Comas M
，Ramos-Quiroga JA
，Lusilla-Palacios P
... -
《JOURNAL OF MEDICAL INTERNET RESEARCH》
Study on the efficiency of virtual reality in the treatment of alcohol use disorder: study protocol for a randomized controlled trial : E-Reva.
According to the World Health Organization, alcohol is a major global public health problem, leading to a significant increase in illness and death. To treat alcohol use disorders, new therapeutic tools are being promoted, among which virtual reality (VR) shows promise. Previous research has demonstrated the efficacy of VR in reducing alcohol cravings in patients, but there is a lack of data on its effectiveness in maintaining abstinence or reducing consumption in recently abstinent individuals. The E-Reva study aims to compare the efficacy of a treatment strategy combining virtual reality cue exposure therapy (VR-CET) and cognitive behavioral therapy (CBT) with conventional CBT in reducing alcohol consumption and craving in patients with alcohol use disorder (AUD). In addition to this primary objective, the study will compare the effects of VR-CET combined with CBT on anxiety, depression, rumination, and feelings of self-efficacy versus conventional CBT.
This prospective randomized controlled trial will be conducted over 8 months in four addiction departments in France. It includes two parallel groups: i) the VR-CET + CBT group, and ii) the CBT-only group, which serves as a control group. Participants will be recruited by the investigating doctor in the addiction centers. The sample will consist of 156 patients diagnosed with AUD and abstinent for at least 15 days. Both treatment groups will participate in four group CBT sessions followed by four individual sessions: i) the VR-CET group will be exposed to virtual environments associated with alcohol-related stimuli, ii) the CBT-only group will receive traditional CBT sessions. After completion of the 8 sessions, patients will be followed up for 6 months. The primary outcome is the cumulative number of standard drinks consumed at 8 months, assessed using the TLFB method.
Despite the promise of VR-CET to reduce the desire to drink, the effect on alcohol consumption remains uncertain in the existing literature. Our protocol aims to address the limitations of previous research by increasing sample size, targeting consumption reduction, and incorporating neutral environments. E-Reva aims to enrich the literature on the use of VR in the treatment of AUD and open new perspectives for future interventions.
ClinicalTrials.gov ID NCT06104176, Registered 2023/11/13 ( https://clinicaltrials.gov/study/NCT06104176?id=NCT06104176&rank=1 ). N° IDRCB: 2022-A02797-36. Protocol version 1.0, 12/05/2023.
Nègre F
，Lemercier-Dugarin M
，Gomet R
，Pelissolo A
，Malbos E
，Romo L
，Zerdazi EH
... -
《Trials》
The effects of virtual reality immersion on the content and structure of the narrative discourse of healthy adults.
Narrative discourse is central to effective participation in conversations. When discourse is assessed in people with communication disability, structured tasks (e.g., picture descriptions) provide experimental control, while unstructured tasks (e.g., personal narratives) represent more natural communication. Immersive virtual reality (VR) technology may provide a solution by creating standardized experiences for narrative retell, therefore balancing ecological validity and experimental control in discourse assessment. Research is needed to understand how VR immersion affects narrative retell, first for adults with no communication disability, before application with adults with aphasia or related communication disability.
To assess (1) the effects of VR immersion on the linguistic content and structure of narrative retells in a healthy adult population; and (2) whether VR immersion can influence the way a narrative is retold so that the speaker conveys their own experience, rather than the experience of the characters they are watching.
In this pilot cohort study, 13 healthy adult participants with no reported communication disability watched an animated short film and a comparable immersive VR short film in a randomized order. Participants were asked to retell the events of the story after each condition in as much detail as possible.
Mean length of utterance (in morphemes) was significantly higher in the video condition compared with the VR condition. Significantly more first-person pronouns were used in the VR condition compared with the video condition. No other measures of linguistic content or structure were significantly different between the VR and video conditions.
Increased morpho-syntactic length and complexity in the video condition may suggest effects of elicitation stimulus on the narrative produced. The larger number of first-person pronouns in the VR condition may reflect that participants experienced a sense of presence in the virtual environment, and therefore were able to retell their communication experience rather than narrating the experiences of characters from an external perspective. Given the increasing need for more functional assessment of discourse in people with communication disability, further research is needed to validate these findings.
What is already known on this subject As an ecologically valid tool, discourse analysis is often used to assess daily communicative exchanges in adults with acquired communication disability. Clinicians and researchers using narrative discourse assessment must balance the experimental control and diagnostic reference sample capabilities of structured tasks with the ecological validity and real-life transferability of unstructured personal narratives. What this study adds to existing knowledge This study explores the use of immersive VR technologies to create standardized, replicable, immersive experiences as a foundation for narrative discourse assessment. It highlights how the 'sense of presence' in a virtual world can prompt healthy adult speakers to retell a narrative of a personal experience that can be replicated for many different participants. The results suggest that immersive VR narrative assessment for adults with communication disability may balance ecological validity with measurement reliability in discourse assessment. What are the potential or actual clinical observations of this work? Immersion in VR resulted in the production of narratives with morpho-syntactic features that aligned with typical narrative generation, rather than retell. Participants used more first-person pronouns, suggesting retelling of personal experience. Though further study is needed, these preliminary findings suggest clinicians can use immersive VR stimuli to generate structured story generations that balance experimental and diagnostic control with ecological validity in narrative discourse assessment for adults with communication disability.
Baker C
，Bryant L
，Power E
《-》
ResearchGate
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钛学术
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