Association between protein intake and functional capacity in critically ill patients: A retrospective cohort study.

Background: Intensive care unit (ICU) protein benchmarks are based on mortality and morbidity; whether these targets also support functional recovery is unknown. We assessed whether different protein doses influenced patients' functional capacity, measured by the Chelsea Physical Assessment score (CPAx).

Methods: Single-center retrospective cohort study on ICU survivors with length of stay ≥7 days admitted between October 2014 and September 2020.