ABSTRACT
Malnutrition estimates range between 5 and 69% in acute Coronavirus disease 2019 (COVID-19) patients. With respect to body composition (BC) and muscle function, low values of phase angle (PhA) and handgrip strength (HGS) have been related to poor disease outcomes. Little evidence is available in post-acute patients. We aimed to combine the evaluation of nutritional status, BC, and muscle strength in a real-life cross-sectional cohort of post-acute COVID-19 patients referred to a rehabilitation center after hospital discharge. The study population included 144 patients (M=95;mean age 64.8yrs), of which 37% bedridden (M=60%). Nutritional status was evaluated with the Mini-Nutritional Assessment (MNA) and Controlling Nutritional status (CONUT) scores. Fat-free mass (FFM), skeletal muscle (SM), and raw variables, i.e. PhA, were estimated with bioelectrical impedance analysis. HGS was measured with a digital handle dynamometer for both dominant and non-dominant body sides. Dynapenia was identified according to the 2019 EWGSOP criteria. According to MNA, 18% of patients were malnourished and 62% at risk of malnutrition. As for CONUT, 21% of patients had moderate-severe malnutrition, while 58%light malnutrition. Overall, malnutrition was highly prevalent in older patients with more comorbidities. Marked abnormalities of PhAand HGSwere more frequent in bedridden or malnourished patients, and when FFM or SM were low. Dynapenic patients were 65% males and 47% females. Malnutrition, BC alterations, and low HGS occur in post-acute COVID-19 patients. Future studies will help to tailor screening algorithms for full nutritional status assessment to appropriate care processes and rehabilitation strategies.