Background: COVID-19 left consequences in different organs from months to years requiring different types of rehabilitation. In fact, a severe loss in the lung function, and in the respiratory and peripheral muscle strength is commonly observed in post-COVID-19 patients. Objectives: Thus, the present study investigated whether 30 days of supplementation with a nutritional blend (ImmuneRecov®; composition: whey protein concentrate, astaxanthin, creatine, selenium, vitamin C, glutamic acid, tryptophan, magnesium) would help to minimize the respiratory (lung function) and muscular (respiratory and peripheral muscles) sequelae in post-COVID-19 patients.

Background: COVID-19 left consequences in different organs from months to years requiring different types of rehabilitation. In fact, a severe loss in the lung function, and in the respiratory and peripheral muscle strength is commonly observed in post-COVID-19 patients. Objectives: Thus, the present study investigated whether 30 days of supplementation with a nutritional blend (ImmuneRecov®; composition: whey protein concentrate, astaxanthin, creatine, selenium, vitamin C, glutamic acid, tryptophan, magnesium) would help to minimize the respiratory (lung function) and muscular (respiratory and peripheral muscles) sequelae in post-COVID-19 patients. Design: This is a non-controlled open label prospective clinical study. Methods: Fifty-eight post-COVID-19 patients were recruited and twenty-four accepted to take the nutritional blend, while twenty-four did not accept but required to participate in the evaluations and 10 refused to participate. So, the patients were evaluated before the 14th day after hospital discharge and after 30 days of use of the nutritional blend or control (no supplementation).

Inclusion Criteria: The inclusion criteria encompassed post-COVID-19 patients with a confirmed COVID-19 diagnosis through a positive RT-PCR test, who also required hospitalization, meeting the criteria for moderate severity classification as defined by the World Health Organization (WHO). In summary, according to the WHO, moderate illness is characterized by individuals who exhibit signs of lower respiratory disease during clinical assessment or imaging and maintain an oxygen saturation level (SpO2) of ≥94% while breathing room air at sea level.

Exclusion Criteria: Exclusion criteria included individuals discharged from the hospital for more than 14 days and those who initiated physical activity or began taking any dietary supplements or vitamins.

All data collected and all measurements done will be shared and properly explained to all participants in a private and previously scheduled meeting

Beginning: 11 December 2023. End: 31 January 2024.

The principal investigator will have access to IPS and all data through data bank used in the Laboratory of Pulmonary and Exercise Immunology.