Abstract
요약
1. Introduction
2. Subjects and Method
2.1 Subjects
2.2 Methods
2.3 Exercise program
2.4 Data analysis
3. Results
3.1 The general characteristics of the study subjects
3.2 Change of back muscle strength
3.3 Change of flexibility
3.4 Change of balance ability
3.5 Change of pain
4. Discussion and Conclusion
REFERENCES