Comparison of the Acute Effect of different types of motor and mental stimuli and combined under the mental, autonomic and motor function of the patient with Respiratory Disease a randomized clinical trial

INTERVENTION: Control group (20 patients): will receive conventional physiotherapy that will be performed once a day and will consist of passive, active, assisted‐assisted, resisted exercises, bedside sedation, seated sedation, orthostatism and progressive walking according to the institution's protocol. In addition, they will receive routine respiratory physiotherapy, consisting of maneuvers of Secretion Removal Therapy, Pulmonary Expansion Therapy and Respiratory Muscle Training. During your entire stay in the ICU. Intervention Group (20 patients): you will receive in addition to conventional physical therapy and routine respiratory physiotherapy, a daily session with a 30‐minute cycle ergometer in the lower limbs. During your entire stay in the ICU. Early Ambulation Exercise Therapy Other CONDITION: Brain Injuries Brain Injuries; Critical Care; Muscle Weakness; Critical Care Outcomes ; Brain Injuries ; Critical Care Outcomes ; Muscle Weakness Critical Care Outcomes Muscle Weakness PRIMARY OUTCOME: Expected outcome 1: Muscle morphology, assessed through the use of ultrasound by analyzing the thickness, cross‐sectional area, echo intensity, fascicle angle, muscle fascicle length, up to 24 hours after admission, every 5 days and on the day of discharge Expected outcome 2: Muscle strength, assessed using the peak torque evoked by neuromuscular electrostimulation, 24 hours after sedation was off and on the day of discharge from the ICU Expected outcome 3: Mobility, assessed using the ICU mobility scale after sedation is switched off and daily until discharge from the ICU SECONDARY OUTCOME: Expected outcome 1: Functionality, assessed using WHODAS 2.0 two months after discharge from the ICU INCLUSION CRITERIA: diagnosis of acute neurological injury; aged between 18 and 65 years; use of invasive mechanical ventilation (IMV); with more than 24 hours of acute brain event or neurosurgery; admitted to the ICU