Clinical Impact and Neuro-functional Substrate of Immersive Virtual Reality Sports Practice on Depression

Depression is a major public health issue due to its frequency (prevalence of 7.5% in adults), its difficulties in therapeutic management (ineffective in 30% of cases and poor compliance) and its societal cost (170 billion euros per year). The most frequent clinical expression is a characterized depressive episode. Physical activity, through better management of emotions and stress, has been proposed as a complementary therapeutic approach in depression. Studies have shown a decrease in depressive symptoms during a sports program of at least 2 weeks in addition to pharmacological treatment. Similarly, mindfulness meditation, because it reduces ruminations, could also improve the therapeutic management of depression. More recently, virtual reality (VR) exposure therapy has also been proposed in the treatment of anxiety and depression, with a benefit of multisensory stimulation induced by a virtual environment in cognitive and sensory-motor rehabilitation and emotion regulation. However, these therapeutic strategies, in addition to pharmacological treatments, have limits. There is thus a real challenge in designing innovative therapeutic programs for the treatment of depression that encourage motivated practice. A sports activity coupled with immersion in VR could combine the benefits of each of these treatments. With the emergence of new immersive technologies, VR allows the recreation of sensory experiences in an environment close to the ecological context. The use of physical activity on an indoor rower or other sensor-equipped device could thus intensify the psychological benefits of exercise and improve compliance. However, there is a lack of clinical evidence to recommend this coupled therapeutic approach in the additional treatment of depression. This approach is part of the embodied virtual medicine road map. Furthermore, a better understanding of the biological, metabolomic, and cerebral mechanisms underlying this approach could improve its effectiveness. I