ABSTRACT
Purpose@#The purpose of this study was to investigate the effect of a kettlebell complex program according to the support surface on the lower extremity muscle activity and balance of baseball players. @*Methods@#The participants were divided into two groups; unstable support surface group 1 (11 people) performed the kettlebell complex program on an unstable support surface, and stable support surface group 2 (10 people) performed the kettlebell complex program on a stable support surface. Muscle activity was measured by surface electromyography. Dynamic balance was measured with a balancemeasuring equipment. A paired t-test was used to compare groups before and after the experiment. An independent t-test was performed to determine the difference in the degree of change between the two groups before and after the experiment. @*Results@#The intragroup comparison between stable support surface group 1 and 2 showed significant differences in muscle activity and sense of balance. In the comparison between the groups, the difference in muscle activity in unstable support surface group1 was significant in the biceps femoris and rectus femoris muscles, and significant differences were also found in the sense of balance. @*Conclusion@#These results suggest that a kettlebell exercise on an unstable support surface is more effective in improving muscle activity and sense of balance than a kettlebell exercise on a stable support surface.
ABSTRACT
Selective cannulation into the intrahepatic duct during ERCP can occasionally be difficult and time-consuming depending on the GI tract anatomy and the presence of biliary tree anomalies or pathology. A variety of techniques or devices have been used to enhance the success rate of selective cannulation in these situations. The balloon occluded method for selective cannulation of the LHD (left hepatic duct) with using an inflated balloon catheter to occlude the RHD (right hepatic duct) has also been reported. We report here a case of successful selective cannulation of the RHD with using an inflated balloon catheter to occlude the LHD in a patient who had a GB cancer with liver metastasis. After this maneuver, a guidewire is advanced; it deflects off the inflated balloon and then proceeds to the RHD.