The purpose of this study was to examine the immediate effect of neck stabilization exercise and Swiss ball exercise on the recovery from the fatigue of neck muscles induced. The turtleneck posture was set artificially by using Smartphone with healthy adults. Repetitively measured ANOVA was executed to examine the changes in the muscle fatigue of sternocleidomastoid, upper trapezius, and splenius capitis among three-time intervals (at the time of general resting, work and after intervention) in the three intervention groups (neck stabilization exercise group, Swiss ball exercise group, and ordinary rest group). There were no significant differences in the changes of fatigue of sternocleidomastoid muscle among all three intervention groups at the time of general resting, work and after intervention (p>.05). Although there was no significant difference in the changes in the fatigue of upper trapezius and splenius capitis muscles between the intervention groups at the time of general resting and work (p>.05), there was the significant difference between the three intervention groups at the time of work and after intervention (p>.05). This study suggest that Swiss ball exercise is more effective in reducing the muscular fatigue of the neck and shoulder at a turtleneck posture than neck stabilization exercise.

INTRODUCTION
SUBJECTS AND METHODS
 Subjects
 Study design
 Intervention tools and Methods
 Measurement tools and Methods
 Data analysis
RESULTS
 Changes in the fatigue of sternocleidomastoid muscle
 Changes in the fatigue of upper trapezius muscle
 Changes in fatigue of splenius capitis muscle
DISCUSSION
CONCLUSION
REFERENCES

• Byeong Jo Kim(Dong-Eui University) correspondence