Background: ErigoPro enables acute stroke patients to carry out stable weight-bearing training with gradual verticalization. Study on the effectiveness of robotic assisted treatment equipment for chronic patients is insufficient. Objectives: This study aims to investigate the effect of dynamic vertical posture training using ErigoPro on trunk alignment and balance in chronic stroke patients. Design: Randomized controlled trial. Methods: The subjects of this study were 30 patients were randomly assigned to a study group of 15 patients and a control group of 15 patients. The study intervention was carried out for 50 minutes per day consisting of 30 minutes of general neuro-physiotherapy and 20 minutes of ErogoPro training, 3 times a week for 8 weeks. Results: The study group showed difference in trunk inclination (P<.05), kyphotic angle (P<.05), lateral deviation of the spine (P<.05), thoracic angle (P<.01), timed up and go test (P<.01), Berg balance score (P<.01). There was a significant difference between the groups in the trunk inclination (P<.05), timed up and go test (P<.01), Berg balance score (P<.05). Conclusion: It could be seen that the treatment combined with ErigoPro training for 8 weeks was effective in restoring trunk alignment and improving balance ability in chronic stroke patients.

INTRODUCTION
SUBJECTS AND METHODS
    Subjects
    Outcome Measures
    Interventions
    Experimental Procedures
    Data and Statistical Analysis
RESULTS
    Change in Trunk Alignment
    Changes in Timed Up and Go Test and Berg BalanceScale
DISCUSSION
CONCLUSION

• Yusik Choi(Department of Physical Therapy, Seoul Metropolitan Seonam Hospital, Seoul, Republic of Korea)
• Sooyong Lee(Department of Physical Therapy, Severance Rehabilitation Hospital, Yonsei University, Seoul, Republic of Korea) Corresponding author