Traumatic Brain Injury (TBI) brings out the major cause of accidental disability. Aerobic exercise can increase the influx of blood circulation improving cognitive performance, such as walking and cycling. Yet the effective exercise prescription improves cerebral blood flow (CBF) on promoting psysical-psycho-social health such as cognitive status, 6 minutes walk test, depression relief, motivation, symptom, resilience and quality of life. PI conducted a retrospective study in TBI patients and results indicated that 93% of patients discharged among 5000 TBI patients in the past decade. However, about 70% TBI outpatients have squeals left by TBI, which not only affect physical activity, cognition, but also cause mental health problems such as depression and also family care burden and huge medical burdens. The preliminary data showed the significant effects of promoting cerebral blood flow (CBF) through aerobic exercise. This study intends to explore the effectiveness of aerobic exercise prescription among patients with TBI on their physical and mental health based on PI's experiences of walking exercise intervention research and their publications.

The aim of this study is to develop exercise prescription of TBI patients and then to evaluate the effectiveness of programmed aerobic exercise to improve psysical-psycho-social health such as cognitive status, 6 minutes walk test, depression relief, motivation, symptom, resilience and quality of life with improvement of CBF. This will be a comprehensive randomized controlled clinical trial using a mixed method to explore the feasibility of such a safety exercise prescription. Then, a randomized clinical control trial will be applied in TBI patients to evaluate the effectiveness of programmed aerobic exercise to promote psysical-psycho-social health such as cognitive status, 6 minutes walk test, depression relief, motivation, symptom, resilience and quality of life.

First, a concurrent parallel design combining qualitative and quantitative mixed methods approach will be conducted to explore the accuracy and appropriateness of the prescription and predictability of the mental health and user's experiences. We plan to recruit 30 TBI patients who will be intervened with moderate to high intensity aerobic exercise. We will collect informations regarding CBF and cardiac force index (CFI) during the progress of aerobic exercise. Moreover, we will evaluate the psysical-psycho-social health such as cognitive status, 6 minutes walk test, depression relief, motivation, symptom, resilience and quality of life. We will examine the sensitivity, specificity and accuracy of the CFI and CBF monitor system, and to explore the experience of adopting aerobic exercise prescription among TBI patients. Depending on the results of the first two years, the safety aerobic exercise prescription with CFI and CBF monitor system will be modified and piloted in the next stage. We plan to recruit at least 120 patients and randomized them into an intervention group (N=60) that received the aerobic exercise prescription and a control group (N=60) that received usual care. Outcome variables will be followed at the pretest, the first, second, third and sixth month after the exercise prescription has been implemented. Intention-to-treat and multiple linear models will be used to analyze the results. We hope to develop the safety aerobic exercise prescription with empirical evidence of promoting mental health for patients with TBI.