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예상 부하와 갑작스런 부하에 따른 정상 성인의 복직근과 요부 척추기립근의 근활성도 차이
국중석,김재헌,이준형,박부애,박다솜,유혜인,Kuk, Jung-Seok,Kim, Jae-Hun,Lee, Jun-Hyeong,Park, Boo-Ae,Park, Da-Soom,Yu, Hye-In 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.4
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.
15분간의 지속적인 스트레칭이 족저압과 족저면적 변화에 미치는 영향
국중석,Kuk, Jung-Seok 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.4
Purpose : The purpose of this study was to evaluate the effects of the stretching of the calf muscles on foot pressure and contact area in young adult. Participants stood on a wedge board that was sloped between 15~25 degree for 15min. After stretching participants stood quietly on force plate, result was recorded. Participants stood on a force plate for 1 min in eye closed condition, and them the foot pressure and area was recorded. The following variables were calculated off-line: anterior and posterior foot pressure and contact area, medial and lateral foot pressure and contact area. Results showed that anterior pressure change due to stretch, but mediolateral was not significant. This result suggested that stretching of the calf muscle has the effect of increasing anterior pressure by flexibility change on calf muscle, so this effects might be effective intervention for reduce of serious problem to neurologic patients in therapy session.
아기띠와 슬링 착용이 체간과 하지의 근활성 및 족저압에 미치는 영향
육군창 ( Goon Chang Yuk ),박래준 ( Rae Joon Park ),이현영 ( Hyun Young Lee ),이명희 ( Myoung Hee Lee ),이전형 ( Jeon Hyeong Lee ),국중석 ( Jung Seok Kuk ),장종성 ( Jong Sung Jang ) 대한물리의학회 2010 대한물리의학회지 Vol.5 No.2
Purpose:The Purpose of this study was to compare muscle activation and foot pressure on baby carrier and sling for baby care. Methods:Thirty one women subjects (mean age 23.2 years) participated in four static conditions: unloaded quite standing, carrying an anterior baby carrier, carrying a posterior baby carrier, and sling. The baby carrier and sling were loaded with baby model that filled 7.6kg loads. Surface electromyography was used to measure activity in the internal oblique, T4, L3, L5 paraspinal muscle, vastus medialis, biceps femoris, tibialis anterior, and gastrocnemius for four conditions. And foot pressure was measured by using MatScan system(Tekscan, USA). Results:The activation of Biceps femoris, T4, L3, and L5 paraspinal muscle were significant differences(p<.05), but other muscles were no significant differences in four conditions(p>.05). Right foot contact area and peak pressure of right mid foot area were significant differences in four conditions(p<.05). Conclusion:The results of this study indicate that the use of baby carrier of sling for baby care were influenced postural responses of young women. Further work is recommended to find out the influences of various assistive devices for baby care.