Due to medical advances and quality of care, mortality in adult intensive care units (ICUs) has decreased significantly in recent years, leading to a significant increase in the number of patients with high rehabilitation needs on discharge from the ICU. A specific management by a multidisciplinary team has been set up since 2017 at the Geneva-ICU for long-stay patients (hospitalised ≥ 7 days). This study aim to assess whether an optimization of the nutritional therapy coupled with an early mobility during and after the ICU stay allows an improvement in the muscle function at hospital discharge compared to patients receiving the standard care.