Katz-Leurer , M, Rotem , H, Keren , O & Meyer, S (2010). Brain Injury, Vol. 24(2), pp 110-114.
This study looked at the efficiency of the heart at rest and during exercise in a group of boys with severe TBI as compared to typically developing boys. The group of boys with severe TBI had a higher average heart rate at rest and during exercise suggesting less efficiency and adaptability in the cardiac system.