Abstract:Objective: Investigate changes in cerebral oxygen metabolism (COM) indicators in moderate-to-severe TBI patients post-interval training of varying intensities and their prognostic correlation. Methods: The clinical data of 150 patients with moderate to severe traumatic brain injury who visited our hospital from January 2022 to January 2024 were collected. The patients were divided into the control group (n=50), the moderate-intensity group (n=50), and the high-intensity group (n=50) according to the random number table method. The cerebral oxygen metabolism indicators of the three groups of patients were analyzed using repeated measures analysis of variance. The generalized estimating equation (GEE) was used to analyze the influence of different factors on the prognosis of patients with moderate to severe traumatic brain injury. Results: (1) After treatment, cerebral oxygen metabolism indicators of all three groups decreased significantly vs. baseline (P < 0.05). Inter-group comparisons showed that at 1 week and 1 month post-treatment, arterial oxygen content (CaO?), jugular venous bulb oxygen content (CjvO?), cerebral oxygen extraction rate (CERO?), and arterio-jugular venous bulb oxygen content difference (Da-jvO?) in the high-intensity group were significantly lower than those in the medium-intensity and control groups (P<0.001), with the medium-intensity group also significantly lower than the control group (P<0.05). (2) At 1 week and 1 month post-treatment, Glasgow Outcome Scale (GOS) and Activities of Daily Living (ADL) scores of all three groups were significantly higher vs. baseline (P<0.05) and increased progressively over time. Inter-group comparisons indicated that GOS and ADL scores in the high-intensity group were significantly higher than those in the medium-intensity and control groups at both time points (P<0.05), with the medium-intensity group also significantly higher than the control group (P<0.05). (3) The intensity of training is a key factor influencing the prognosis of patients, and the protective effect of the high-intensity group is superior to that of the medium-intensity group (P<0.05). Conclusion: High-intensity interval training effectively reduces COM indicators and improves prognosis, with COM closely linked to outcomes.