## 5 Conclusions  
We investigated the hypothesis that engagement in RAGT with voluntary muscle contractions, via robotic assistance reduction, would concentrate muscle activity patterns and improve gait quality. As a result of 10 weeks of RAGT, improvements were observed in 10 MWT, 6 MWT, GMFM, and the strength of knee flexion and extension, reflecting enhanced gait quality in children with cerebral palsy. As robotic rehabilitation continued and robotic assistance decreased, the principal muscle activity patterns were observed by applying a clustering algorithm and comparing the size of the EMG that had changed; however, the effects of RAGT were not retained during the post-assessment and follow-up assessment.  
This study highlights the potential of gradually reducing robotic assistance as a key element in optimizing rehabilitation outcomes. Unlike conventional RAGT protocols, which often employ fixed levels of assistance, the proposed protocol leverages assistive force reduction to maintain high intensity, leading to greater neuromuscular engagement and motor learning of children with cerebral palsy. Despite the limitations of this pilot single-participant study, these findings provide a strong foundation for further exploration of this novel approach. We plan a multi-center randomized controlled trial with a larger sample size to validate these preliminary results and determine the generalizability of this protocol. This next step will help establish whether gradual robotic assistance reduction can serve as a standardized approach to enhancing motor recovery and gait quality in children with cerebral palsy. By addressing the limitations of current RAGT methodologies, this study can contribute to the advance of individualized and intensity-driven robotic rehabilitation strategies.  
Conceptualization, S.K. and H.K.K.; methodology, S.K., S.P. and J.H.J.; software, S.K.; validation, S.K., S.P. and J.H.J.; formal analysis, S.K.; investigation, S.K., S.P. and J.H.J.; resources, H.K.K.; data curation, S.K. and S.P.; writing--original draft preparation, S.K.; writing--review and editing, S.K., S.P., J.H.J. and H.K.K.; visualization, S.K.; supervision, H.K.K.; project administration, H.K.K.; funding acquisition, S.K. and H.K.K. All authors have read and agreed to the published version of the manuscript.  
This research was funded by the Translational Research Program for Rehabilitation Robots of the National Rehabilitation Center, Ministry of Health and Welfare, Republic of Korea, grant numbers NRCTR-IN22005 and NRCTR-IN23005. This research was also supported by the Nano & Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, grant number RS-2023-00282305.  
**Institutional Review Board Statement:** The study was conducted in accordance with the Declaration of Helsinki, and approved by the Institutional Review Board of the National Rehabilitation Center (IRB no. NRC-2022-02-117, 29 March 2022).  
**Informed Consent Statement:** Informed consent was obtained from the participant involved in the study and her legal guardian.  
**Data Availability Statement:** The datasets used and analyzed during this study are available from the corresponding author upon reasonable request.  
**Acknowledgments:** We thank the participant and her mother for their time and effort during this study.  
**Conflicts of Interest:** The authors declare no conflicts of interest. The funders also had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.