## 5 Conclusions  
To our knowledge, there are no studies examining the gait cycle, kinematics, and kinetics of gait in elderly people with a decline in cognitive function. In this study, we classified elderly people with low cognitive function through the application of the K-MoCA and then analyzed their gait using a three-dimensional motion analysis technique. As a result, it was confirmed that there was a difference between the two groups regarding the subdivisions of the gait cycle and joint mechanics. The results are as follows:  
* Older adults with reduced cognitive function have slower walking speeds, longer DLS cycles, and shorter SLS cycles than those with normal cognitive function.
* During LR to MSt, the function of the femoral muscles was lower in the LC group, which was compensated by the hip extensors, and the plantar flexor's function is low during push-off.
* In conclusion, elderly people with cognitive function decline adopt a gait strategy to secure gait stability.  
These results provide clinical evidence of the effectiveness of assistance/rehabilitation in gait training for the prevention of dementia progression and safe daily walking in elderly people with cognitive decline.  
Conceptualization, K.K. and D.K.; data curation, K.K.; formal analysis, K.K. and E.K.; funding acquisition, K.K. and D.K.; investigation, K.K. and E.K.; methodology, K.K. and E.K.; project administration, K.K. and D.K.; resources, K.K.; supervision D.K.; visualization, K.K.; writing--original draft, K.K. All authors have read and agreed to the published version of the manuscript.  
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2019R1A2C2088033), and by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2019R1A6A3A01092848). And this research was supported by \"Research Base Construction Fund Support Program\" funded by Jeonbuk National University in 2021. The APC was funded by the National Research Foundation of Korea (NRF) grant, funded by the Korea government (MSIT). The funding bodies had no role in the design or conclusions of this study.  
The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Institutional Review Board of Jeonbuk National University (IRB File No. JBNU 2019-09-015-001), and this present study was registered in Clinical Research Information Service (CRIS) (Trial registration number, KCT0006202).  
Informed Consent Statement: Informed consent was obtained from all subjects involved in the study, and written informed consent has been obtained from the participants to publish this paper.  
The data presented in this study are available on request from the corresponding author. The data are not publicly available due to their also forming part of an ongoing study.  
The authors would like to thank all the participants for their cooperation.  
The authors declare no conflict of interest. The funders 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.