The purpose of this study was to investigate the short-term effects of lumbar rotational mobilization under the single-leg standing (SLS) position. Fifteen healthy individuals were recruited, and randomized to agroup of trunk rotational exercise (TRE) and lumbar rotational mobilization (LRM). Trunk twist rotational exercise was performed to the TRE group, and mobilization was applied to the LRM group on the lumbar spine. Velocity of the center of pressure (VCOP) and center of pressure (COP) for each participant were measured through SLS. COPs were not significantly increased or decreased after treatment in both groups. VCOPs also did not change considerably except on the right side when the eye was closed. There was no significant difference between COPs and VCOPs in two groups. This study suggests that trunk rotation exercise and lumbar rotation mobilization would have similar effects on balance ability.

INTRODUCTION
 SUBJECTS AND METHODS
  Subjects
  Study Design and Sequences
  Study interventions
  Study interventions
 RESULTS
  Within-group differences
  Between-group differences
 DISCUSSION
 CONCLUSION
 REFERENCES

• Bo Kyung Kim(International University of Korea)
• Wan Suk Choi(International University of Korea)
• Seo Yoon Heo(Kyungbok University) Correspondence