Virtual Reality Cognitive Training Among Individuals With Alcohol Use Disorder Undergoing Residential Treatment: Pilot Randomized Controlled Trial

Pedro Gamito, Jorge Oliveira, Marcelo Matias, Elsa Cunha, Rodrigo Brito, Paulo Ferreira Lopes, Alberto Deus, Pedro Gamito, Jorge Oliveira, Marcelo Matias, Elsa Cunha, Rodrigo Brito, Paulo Ferreira Lopes, Alberto Deus

Abstract

Background: Alcohol use disorder (AUD) has been associated with diverse physical and mental morbidities. Among the main consequences of chronic and excessive alcohol use are cognitive and executive deficits. Some of these deficits may be reversed in specific cognitive and executive domains with behavioral approaches consisting of cognitive training. The advent of computer-based interventions may leverage these improvements, but randomized controlled trials (RCTs) of digital interactive-based interventions are still scarce.

Objective: The aim of this study is to explore whether a cognitive training approach using VR exercises based on activities of daily living is feasible for improving the cognitive function of patients with AUD undergoing residential treatment, as well as to estimate the effect size for this intervention to power future definitive RCTs.

Methods: This study consisted of a two-arm pilot RCT with a sample of 36 individuals recovering from AUD in a therapeutic community; experimental group participants received a therapist-guided, VR-based cognitive training intervention combined with treatment as usual, and control group participants received treatment as usual without cognitive training. A comprehensive neuropsychological battery of tests was used both at pre- and postassessments, including measurement of global cognition, executive functions, attention, visual memory, and cognitive flexibility.

Results: In order to control for potential effects of global cognition and executive functions at baseline, these domains were controlled for in the statistical analysis for each individual outcome. Results indicate intervention effects on attention in two out of five outcomes and on cognitive flexibility in two out of six outcomes, with effect sizes in significant comparisons being larger for attention than for cognitive flexibility. Patient retention in cognitive training was high, in line with previous studies.

Conclusions: Overall, the data suggest that VR-based cognitive training results in specific contributions to improving attention ability and cognitive flexibility of patients recovering from AUD.

Trial registration: ClinicalTrials.gov NCT04505345; https://ichgcp.net/clinical-trials-registry/NCT04505345.

Keywords: alcohol use disorder; cognitive training; virtual reality.

Conflict of interest statement

Conflicts of Interest: None declared.

©Pedro Gamito, Jorge Oliveira, Marcelo Matias, Elsa Cunha, Rodrigo Brito, Paulo Ferreira Lopes, Alberto Deus. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.01.2021.

Figures

Figure 1
Figure 1
Examples of the virtual reality tasks used for cognitive training.
Figure 2
Figure 2
CONSORT (Consolidated Standards of Reporting Trials) 2010 flow diagram. VR: virtual reality.

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