Addressing persistent symptoms in post-COVID condition: Through a multimodal intervention delivered in two technology-based formats, 2026, Ariza+

[SNT Gatchaman]

Addressing persistent symptoms in post-COVID condition: Through a multimodal intervention delivered in two technology-based formats

Spoiler: Authors

Mar Ariza; Neus Cano; Anna Carnes-Vendrell; Olga Gelonch; Yemila Plana; Bruno Porras-Garcia; Elisabeth López-Soley; Silvia Moron; Gerard Piñol-Ripoll; Maite Garolera; Rehab Project Collaborative Group

BACKGROUND
Persistent symptoms after acute COVID-19, formally recognized as post-COVID-19 condition (PCC), are prevalent and disabling. The World Health Organization has emphasized early, multidisciplinary rehabilitation using accessible and hybrid care models. However, no standard protocol currently exists, and few studies have evaluated digital formats in this context.

OBJECTIVE
To examine the effects of two digital rehabilitation formats—immersive virtual reality (IVR) and a self-guided online program—on cognitive and functional outcomes in individuals with PCC.

METHODS
The study used a nonrandomized, quasiexperimental pre–post design. We enrolled 172 adults with PCC into a 12-week multimodal program combining cognitive training, physical activity, and mindfulness; participants chose IVR or an online self-guided program, and usual-care controls were recruited at a separate site. Outcomes were assessed before and after across cognitive, psychological, lifestyle, functional, and quality-of-life domains.

RESULTS
Significant group-by-time interactions were observed across multiple domains. IVR was associated with improvements in global cognition, immediate recall, recognition memory, and response inhibition. The online intervention showed improvements in verbal recognition, mindfulness, and perceived health-related quality of life. Additional outcomes showed significant group-by-time interactions without postintervention differences, indicating differential trajectories over time rather than discrete between-group effects.

CONCLUSIONS
Both IVR and online multimodal interventions were associated with domain-specific cognitive and functional benefits in individuals with PCC. These findings support the potential value of multicomponent rehabilitation approaches, while highlighting that some effects reflect differential trajectories rather than definitive postintervention group differences.

STUDY REGISTRATION
NCT05846126 (date of registration 04 May 2023).

Web | DOI | PDF | DIGITAL HEALTH | Open Access

 

[SNT Gatchaman]

Subjective outcomes, unblinded nonsense. Incredibly this is even worse than the usual.

A total of 172 participants with PCC participated in one of three study arms: an online intervention, an IVR intervention, or a passive control group. Interventions lasted 12 weeks, with pre- and postintervention assessments. Participants were recruited via clinician referral and self-referral using convenience sampling; no systematic sampling plan was implemented.

The study was designed as a pragmatic effectiveness trial aimed at evaluating the real-world applicability and feasibility of two technology-delivered multimodal rehabilitation programs for individuals with PCC.

Random allocation to study arms was planned in the original protocol but was never implemented. During recruitment, eligible participants were identified and consented, but they were not immediately assigned to any study arm. Instead, allocation was postponed while feasibility constraints related to intervention delivery were addressed. Before any participant was assigned to a group, a non-randomized allocation procedure was defined. Participants eligible for an intervention were allowed to self-select into one of the two intervention formats —immersive virtual reality (IVR) or online— based on their availability for in-person sessions, access to the required technology, and scheduling constraints. Participants in the control group did not choose their allocation and were directly invited to participate as controls, without access to any intervention format.

Given the nature of the interventions (IVR, self-guided online, and control), participants and intervention staff were not blinded. Outcome assessors were not blinded to group assignment. For data analysis, group labels were numerically coded with the intent to mask allocation; however, participant identifiers encoded the treatment format, so masking of analysts was incomplete. No formal assessment of blinding was performed.

 

[SNT Gatchaman]

a significant difference was observed in group allocation, with a higher proportion of dropouts belonging to the online group compared to the IVR and control groups. The most marked difference between completers and dropouts was observed in labor status. All participants who dropped out reported no change in their employment situation, whereas most completers in the intervention groups had experienced a change, such as medical leave or reduced working hours.

This is not further discussed.

The online group, which started from a lower baseline, was the only one to show improvement in cognitive flexibility, as both the IVR and control groups obtained lower scores at postintervention compared to baseline.

The IVR group reported showed more favorable trajectories and higher postintervention levels of moderate physical activity as measured by the IPAQ. This finding is consistent with previous evidence indicating that VR-based interventions may be associated with modest increases in physical activity–related outcomes across different populations. However, given the self-reported nature of the IPAQ and the absence of objective activity monitoring, these results should be interpreted cautiously.

Despite the increase in mindfulness, emotional symptom scales did not show significant changes in the online group. This finding is somewhat unexpected given the well-documented link between MBIs and reductions in depression and anxiety.