The Role of the Six-Minute Walk Test in the Functional Evaluation of the Efficacy of Rehabilitation Programs After COVID-19

Patients with COVID-19 suffering in the acute phase from both the sequelae of the disease and prolonged immobilization require a rehabilitation phase for functional recovery and a comprehensive functional evaluation. This study proposes using the 6-Minute Walk Test (6MWT) as a global functional assessment tool to quantify rehabilitation outcomes in post-COVID patients. Additionally, investigating the effect of High-Intensity Laser Therapy (HILT) on patients with musculoskeletal comorbidities was another key research question. Two post-COVID rehabilitation programs were retrospectively analyzed as follows: one consisting of kinesiotherapy combined with High-Intensity Laser Therapy for patients with musculoskeletal comorbidities and the other consisting of kinesiotherapy alone. Functional evaluation using 6MWT was conducted before and after 10 daily therapeutic sessions with 33 ambulatory patients divided into 2 groups (18 patients treated with HILT and kinesiotherapy vs. 15 patients treated with kinesiotherapy only). The 6MWT was successfully completed by 32 out of 33 patients (96.96%), with performance improvements ranging from 3% to 60% among patients. Statistical differences were also observed between the groups, suggesting that the 6MWT is a sensitive, objective, and valuable tool for functional assessment of post-COVID rehabilitation, supporting the potential benefits of HILT in enhancing functional recovery.