Journal of Korean Physical Therapy Science (대한물리치료과학회지)
- Volume 18 Issue 4
- /
- Pages.65-72
- /
- 2011
- /
- 2733-6441(pISSN)
- /
- 2733-645X(eISSN)
Comparison of Rectus Abdominalis and Erector Spine Muscle Activities during Expected and Unexpected Sudden Loadings in Young Healthy Adults
예상 부하와 갑작스런 부하에 따른 정상 성인의 복직근과 요부 척추기립근의 근활성도 차이
- Kuk, Jung-Seok (Yeungnam University Medical Center) ;
-
Kim, Jae-Hun
(Dept. of Physical Therapy Sunlin University)
;
- Lee, Jun-Hyeong (Dept. of Physical Therapy Sunlin University) ;
- Park, Boo-Ae (Dept. of Physical Therapy Sunlin University) ;
- Park, Da-Soom (Dept. of Physical Therapy Sunlin University) ;
- Yu, Hye-In (Dept. of Physical Therapy Sunlin University)
- 국중석 (영남대학교의료원 재활의학과 물리치료실) ;
-
김재헌
(선린대학교 물리치료과)
;
- 이준형 (선린대학교 물리치료과) ;
- 박부애 (선린대학교 물리치료과) ;
- 박다솜 (선린대학교 물리치료과) ;
- 유혜인 (선린대학교 물리치료과)
- Received : 2011.12.07
- Accepted : 2011.12.28
- Published : 2011.12.31
Abstract
The purpose of this study was to investigate the responses of the trunk muscle during expected and unexpected sudden loadings of the hands on the sagittal plane. Twenty, young healthy adults(male 10, female 10) were participated to two different loading conditions : expected and unexpected sudden loadings. Different weights were dropped in hand : 5lb, 6lb, 7lb for male, and 3lb, 4lb, 5lb for female. EMG activity of rectus abdominalis and erector spine muscle were collected. Rectus abdominalis and lumbar erector spine muscle activity significantly increased in unexpected sudden loadings than expected sudden loadings(p<.05). This results indicate that co-contraction of abdominal and back muscle contribute for dynamic spinal stability during expected or unexpected activities of daily living. Preparatory adjustments can be made which reduce the postural perturbation to sudden load and prevent low back injuries.