Background: Flexible flatfoot impairs gait and posture by weakening arch support, potentially leading to musculoskeletal dysfunction. Strengthening exercises, such as the short foot exercise (SFE), have shown promise in correcting this condition. Objectives: This study aimed to investigate the effects of SFE with visual feedback on medial arch height and foot function in adults with flexible flatfoot. Design: Experimental research. Methods: Adults diagnosed with flexible flatfoot were randomly assigned to either an experimental or control group. The experimental group performed SFE with visual feedback, whereas the control group performed the same exercises without feedback. Both groups trained three times per week for five weeks. Outcome measures included the Navicular Drop Test (NDT), YBalance Test (YBT), and Tetrax postural analysis. Results: In the NDT, both groups showed significant improvements (P<.05), while in the YBT, only the experimental group showed a significant improvement (P<.05). In contrast, there were no significant changes in the Weight Distribution Index (WDI) and Stability Test (ST) areas of the Tetrax system in either group (P>.05). Conclusion: SFE effectively improved arch height regardless of visual feedback, though only the visual feedback group showed significant improvements in dynamic balance. However, between-group differences were not statistically significant, suggesting that visual feedback provides subtle rather than substantial additional benefits. Further research with larger samples is needed to establish the clinical value of adding visual feedback to SFE protocols.

INTRODUCTION
SUBJECTS AND METHODS
    Subjects
    Experimental Procedures
    Outcome Measures
    Navicular Drop Test
    Y-Balance Test
    Balance Capability Exercise Treatment System
    Interventions
    Data and Statistical Analysis
RESULTS
    Navicular Drop Test
    Y-Balance Test
    Balance Capability Exercise Treatment System - WDI
    Balance Capability Exercise Treatment System - ST
DISCUSSION
CONCLUSION
REFERENCES

• Yusung Jang(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea) Corresponding author
• Wondeok Lee(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Jihye Kim(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Jeongsun Kim(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Junhyeok Go(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Jaehoon Choi(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Jihoo Park(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Hyeonyoung Choi(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Hanbin Choi(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)
• Yunmi Kim(Department of Physical Therapy, Gangdong University, Eumseong, Republic of Korea)