The purpose of this study was to investigate the effects of core strengthening training on baseball throwing. A total of 14 subjects were recruited from among middle school baseball players. The main outcome measures were as follows: speed guns were used to measure the velocity of baseballs thrown; scored targets were used to measure throwing accuracy; and 50m measuring tapes were used to measure throwing distances. It was found that core strengthening training improved the velocity of baseballs thrown and throwing accuracy and distance. Thus, core strengthening training is effective for improving the throwing ability of baseball players.

INTRODUCTION
 METHODS
 RESULTS
 DISCUSSION
 CONCLUSIONS
 ACKNOWLEDGEMENT
 REFERENCES

• Han Ki Lee(Department of Physical Therapy, Masan university, Masan, Korea)
• Da Eun Jung(Department of Physical Therapy, Gimhae University, Gimhae, Korea)
• Jun Cheol Lee(Graduate School, Daegu university, Daegu, Korea) correspondence