Table 1.

Search strategy used in PubMed®.

#1	(“Intensive care” OR “Critical care” OR “Intensive care unit” OR “Critical illness” OR “Care, Critical” OR “Care, Intensive” OR “Surgical Intensive Care” OR “Care, Surgical Intensive” OR “Intensive Care, Surgical”)
#2	(“Early Ambulation” OR “Accelerated Ambulation” OR “Ambulation, Accelerated” OR “Ambulation, Early” OR “Early Mobilization” OR “Mobilization, Early” OR “Exercise” OR “Physical Activity” OR “Activities, Physical” OR “Activity, Physical” OR “Physical Activities” OR “Exercise, Physical” OR “Exercises, Physical” OR “Physical Exercise” OR “Physical Exercises” OR “Acute Exercise” OR “Acute Exercises” OR “Exercise, Acute” OR “Exercises, Acute” OR “Exercise, Isometric” OR “Exercises, Isometric” OR “Isometric Exercises” OR “Isometric Exercise” OR “Exercise, Aerobic” OR “Aerobic Exercise” OR “Aerobic Exercises” OR “Exercises, Aerobic” OR “Exercise Training” OR “Exercise Trainings” OR “Training, Exercise” OR “Trainings, Exercise” OR “Motion Therapy, Continuous Passive” OR “Movement Therapy, Continuous Passive” OR “Passive Movement Therapy, Continuous” OR “Continuous Passive Motion Therapy” OR “Passive Motion Therapy, Continuous” OR “Continuous Passive Movement Therapy” OR “CPM Therapy” OR “CPM Therapies” OR “Therapies, CPM” OR “Therapy, CPM” OR “Resistance Training”)
#3	(“Procedure, Cardiac Surgical” OR “Procedures, Cardiac Surgical” OR “Surgical Procedure, Cardiac” OR “Surgical Procedures, Cardiac” OR “Surgical Procedures, Heart” OR “Cardiac Surgical Procedure” OR “Heart Surgical Procedures” OR “Procedure, Heart Surgical” OR “Procedures, Heart Surgical” OR “Surgical Procedure, Heart” OR “Heart Surgical Procedure” OR “Cardiac Surgery”)
#4	#1 AND #2 AND #3 AND