Introduction: Stabilizing the core is a dynamic process of maintaining balance. The Transverse abdominis (TrA) muscle is the first muscle activated during lower extremity movements indicating that it is primary muscle linked to core stability during lower limb movements. The literature in recent years has consistently linked the changes of the activity onset of the TrA as a marker of motor control dysfunction that directly reflects an impairment resulting in less than optimal mechanical stability of the lumbar spine This study evaluated the correlation between core stability and dynamic balance based on three objectives namely the myoelectrical activity of transverse abdominis and direction specific muscles of stance extremity (Vastus medialis ,Vastus lateralis and Biceps femoris) , the latency period of transverse abdominis and direction - pecific muscles of stance extremity in respective directions of modified star excursion balance test and the Star Excursion Balance test (SEBT) score. The Research design is Experimental. 30 Healthy collegiate male from university were included in study based on inclusion criteria. The EMG electrodes were placed on Transverse abdominis, Vastus medialis obliques , Vastus lateralis , Biceps femoris muscles . The Ground electrode was placed on iliac crest . The Measurement was done through modified star excursion balance test score. The SEBT testing was done in anterior, posteromedial, posterolateral directions . the SPSS 19.0 was used for statistical analysis. The level of significance p<0.05 was taken for all tests . the results showed Statistically significant, strong negative correlation between measure of core stability (latency period) and components of modified SEBT was found (p<0.001). Conclusion: The study found that latencies between transverse abdominis and direction specific muscle of SEBT to be highly correlated with each other, So it can be used as an objective assessment tool of core stability along with the modified SEBT score analysis. 

Key words: SEBT; EMG; Transversus abdominis.