Virtual rehabilitation for individuals with Long COVID: a randomized controlled trial.

BackgroundOur primary objective was to investigate whether an 8-week virtual rehabilitation program for individuals with long COVID improves functional mobility compared to usual care. MethodsSubjects were randomly assigned to receive either i) virtual rehabilitation plus usual outpatient care or ii) usual outpatient care. The intervention group underwent an 8-week virtual rehabilitation program which consisted of personalised and symptom-titrated functional aerobic and resistance exercises as well as long COVID educational sessions. The primary outcome was the Activity Measure for Post-Acute Care (AM-PAC) mobility score. Secondary outcomes included the Baseline and Transition Dyspnea Index (BDI/TDI), the Fatigue Visual Analog Scale, 12-item short-form, EuroQol 5 Dimension 5 Level (EQ-5D-5L), DePaul Symptom Questionnaire - PEM, physical function tests, questionnaires on mental health, acceptability and adverse events. Findings132 individuals with long COVID (mean age 48 {+/-} 11.8; 75% female) were enrolled. The adherence rate was 96%; however, 25 participants (39%) in the intervention group were unable to progress their exercises through the FITT (frequency, intensity, time, and type) principle due to symptoms. No between group differences were found for change in AM-PAC mobility (95% CI -0.91 to 2.13). The proportion of participants achieving the minimal detectable change in the AM-PAC mobility at the end of the intervention period was higher in the intervention group (35.8% (SE 6.0%) vs. 17.0% (SE 4.7%)) (95% CI 3.9 to 33.8). Compared with controls, scores on the EQ-5D-5L pain/discomfort (95% CI -0.70 to -0.03), EQ-5D-5L VAS (95% CI 1.05 to 14.43), VAS fatigue (95% CI -1.78 to -0.02), as well as for the TDI functional (95% CI 0.07 to 0.72), effort (95% CI 0.10 to 1.12) and total scores (95% CI 0.10 to 2.37) were greater in the intervention group. There were no between-group differences in other outcomes and no serious adverse events. InterpretationAn 8-week virtual rehabilitation program did not improve self-reported mobility for most patients with long COVID, however we did find improvements in health status and symptom persistence. Progression of exercise training is challenging in this population.