Study Design
post-brain
The study protocol was approved by the Ethics Committees of the Alliant International University (IRB number: 1908147259), the National Taiwan University Hospital (IRB number: 201204004RIC), and the Fu Jen Catholic University Hospital (IRB number: FJUH109016). A randomized controlled trial design was adopted so that participants were randomly assigned to either the psychoeducation group or the HRV-BF intervention group before the intervention. Randomization was performed by assigning random numbers from random number tables to the psychoeducation and HRV-BF interventions. The psychoeducation group received standard medical care and one 60-min session of post-brain injury psychoeducation and post-test measurement. The HRV-BF group received standard medical care and a weekly 60-min session of HRV-BF intervention for ten weeks and then participated in a post-test measurement (Fig. Flow chart of participants through the study