The purpose of this study was to identify the effects of continuous muscle strengthening applied to the antagonist of the sternocleidomatoid, upper trapezius, and pectoralis major, which are the shortened muscles of forward head posture(FHP) subjects, and Evjenth-Hamberg stretching(EHS) applied to the shortened muscles on changes in pressure pain threshold(PPT). Twenty subjects were divided into the continuous antagonist strengthening( CAS) group(n=10) and the EHS group(n=10), and each group performed its respective exercise three times a week for a six week period. The results were as follows: The comparison of changes in PPT within each group before and after the treatment showed a statistically significant difference( p<.05) according to the treatment period and a statistically significant difference according to the treatment period and method(p<.05). While the comparison of the tests of between subjects effects between the groups did not show a statistically significant difference, the CAS group exhibited better effects. The above results suggest that the combined application of CAS and EHS generates better effects on changes in PPT than the single application of EHS. Given that stretching and muscle strengthening exercises even for the short research period of six weeks could change the PPT, continuous exercises and a correct postural habit for a longer period of time are likely to help prevent chronic pain and correct FHP

INTRODUCTION
 METHODS
  Subjects
  Methods
  Evjenth-Hamberg Stretching
  Continuous Antagonist Strengthening Exercise
  Measurement of the pressure pain threshold
  Data Analysis
 RESULTS
  General characteristics of the subjects
  The comparison of changes in PPT after the treatmentaccording to the treatment period
 DISCUSSION
 REFERENCES

• Ja Pung Koo(Pohang College, Pohang)
• Wan Suk Choi(International university)
• Hyun Parkc(Suwon women university,Suwon, Korea) correspondence