Background: In previous studies, changes in postural alignment were found when the slope was changed during walking. Downhill walking straightens the trunk by shifting the line of gravity backward.
Objects: This study investigated the effect of the downhill treadmill walking exercise (DTWE) on thoracic angle and thoracic erector spinae (TES) activation in subjects with thoracic kyphosis.
Methods: A total of 20 subjects with thoracic kyphosis were recruited for this study. All the subjects performed the DTWE for 30 minutes. A surface EMG and 3D motion capture system were used to measure TES activation and thoracic angle before and after the DTWE. Paired t-tests were used to confirm the effect of the DTWE (p<.05).
Results: Both the thoracic angle and TES activation had significantly increased after the DTWE compared to the baseline (p<.05). An increase in the thoracic angle indicates a decrease in kyphosis.
Conclusion: The DTWE is effective for thoracic kyphosis patients as it decreases their kyphotic posture and increases the TES activation. Future longitudinal studies are required to investigate the long-term effects of the DTWE.

Abstract
 Ⅰ. 서론
 Ⅱ. 연구방법
  1. 연구대상자
  2. 연구 절차
  3. 측정도구 및 방법
  4. 분석방법
 Ⅲ. 결과
  1. 내리막 경사로 트레드밀 걷기 중재 적용 전,후에 따른 흉추 각도 비교
  2. 내리막 경사로 트레드밀 걷기 중재 적용 전,후에 따른 흉추세움근의 활성도 비교
 Ⅳ. 고찰
 Ⅴ. 결론
 References

• 이준혁(연세대학교 일반대학원 물리치료학과) | Jun-hyeok Lee (Dept. of Physical Therapy, The Graduate School, Yonsei University)
• 전혜선(연세대학교 보건과학대학 물리치료학과, 연세대학교 보건환경대학원) | Hye-seon Jeon (Dept. of Physical Therapy, College of Health Science, Yonsei University/Dept. of Ergonomic Therapy, The Graduate School of Health and Environment, Yonsei University) Corresponding author
• 김지현(연세대학교 일반대학원 물리치료학과) | Ji-hyun Kim (Dept. of Physical Therapy, The Graduate School, Yonsei University)
• 박주희(연세대학교 일반대학원 물리치료학과) | Joo-hee Park (Dept. of Physical Therapy, The Graduate School, Yonsei University)
• 윤혜빈(연세대학교 일반대학원 물리치료학과) | Hyeo-bin Yoon (Dept. of Physical Therapy, The Graduate School, Yonsei University)