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Nocturnal Bruxism and Botulinum Toxin Effect on the Subjects with Masseteric Hypertrophy
손승만,정기정,김미은,김기석,Sohn, Seung-Mahn,Chung, Gi-Chung,Kim, Mee-Eun,Kim, Ki-Suk Korean Academy of Orofacial Pain and Oral Medicine 2007 Journal of Oral Medicine and Pain Vol.32 No.3
This study aimed to evaluate a relation of bruxism with clinical effects of botulinum toxin type A(BTX-A) injection. 5 bruxers and 5 nonbruxers with bilateral masseter hypertrophy were participated in this study. After injecting 25 unit of BTX-A(Allergen Inc, $Botox^{(R)}$) into each masseter muscle, the thickness of masseter(Mm) and anterior temporalis(Ta) muscles was measured by ultrasonography and the maximum bite force was evaluated during a 9-month period. Self-estimation on the recovery of occlusal force during mastication was done as well. Regardless of presence of bruxsim, all subjects showed significantly reduced Ms thickness(p<0.001) and maximum bite force at $1^{st}$ molars(p=0.027) with their peak at 3 months after injection, which then started to return. No significant difference was observed in Ta thickness and the bite force at the central incisors. While self-estimated occlusal force was the least at 2 weeks after injection and then rapidly returned to the baseline level with full recovery at the time of 6 to 9 months after injection, the maximum bite force measured by bite force recorder did not recover the original value, particularly in the nonbruxer group. It is assumed that nocturnal bruxism can influence recovery of atrophic masseter and decreased occlusal force due to BTX-A injection. These findings suggest a need of occlusal appliance to control bruxism or clenching habit for longer clinical effect of BTX-A injection.
손승,이미경,양정옥,서국웅,석혜경 한국자료분석학회 2009 Journal of the Korean Data Analysis Society Vol.11 No.2
The purpose of this study is provide the basic data of good general pattern as a result of analyzing kinematical factors of three throwing motions in five steps phase. This study was conducted six professional bowlers in B city and their pictures taken with six video cameras in 30 f/s and analyzed(Kwon 3D motion analysis). All data were presented with mean and standard deviation and analyzed difference of values by ANCOVA(SPSS VER. 12.0). The results are as follows. For coronal plane, the angle range of pelvis, and trunk of the body respectively with straight, hook, power of throwing motions were show significant differences. For the typical pattern of shoulder, pelvis, and trunk of the body with straight, hook, power of throwing motions, of movement angles of shoulder, pelvis of the body tended to show bigger change than that of trunk of the body. The movement ranges left and right, up and down of the center of gravity with straight, hook, power of throwing motions was show significant differences. But for the typical pattern of movement ranges left and right, up and down of the center of gravity with straight, hook, power of throwing motions, up and down movement of the center of gravity tended to show bigger than left and right movement of the center of gravity. 본 연구의 목적은 볼링투구동작의 일반적 패턴을 파악하여 볼링지도의 기초 자료를 제공하기 위하여 실시되었으며 남자볼링선수 6명 대상으로 6대의 비디오카메라를 이용하여 30f/s로 촬영하였고, Kwon3D motion analysis를 통하여 경사각과 신체중심 이동범위 등 운동학적 요인을 분석하였다. 자료처리는 SPSS ver12.0을 이용하여 모든 결과는 평균과 표준편차로 제시하고 변인의 차이분석은 공변량분석(ANCOVA)을 실시하였다. 연구결과는 다음과 같다. 관상 면에서의 Straight, Hook, Power 시 골반과 몸통의 경사각 범위에서 통계적으로 유의한 차이가 있었고 전형적 패턴은 어깨와 골반이 몸통보다 큰 변화를 나타냈다. 또한 Straight, Hook, Power 시 신체중심의 좌우ㆍ상하 이동범위에서도 통계적으로 유의한 차이를 보였고 전형적 패턴에서는 상하가 좌우의 움직임보다 크게 나타나는 경향을 보였다.
아동성폭력 예방을 위한 행동기술훈련의 효과에 관한 연구
손승아(Seung Ah Son) 한국아동학회 1992 아동학회지 Vol.13 No.2
The purpose of this study was to investigate the effectiveness of teaching personal safety skills for prevention of potential child sexual abuse in Korean society. The subjects of this study were 80 first grade female students, sampled from elementary schools in Seoul. The instruments of this study were the Personal Safety Questionnaire (PSQ) and `What if` Situations Test (WIST) modified by the present researcher. The t-test and Pearson`s correlation coefficient were applied to analyze the data of this study. The results of the analysis were (1) after the Behavioral Skills Training, the children of the training group showed a higher level of knowledge about child sexual abuse than the control group. (2) After the Behavioral Skills Training, the children of the training group showed more adequate self-defensive skills than the control group when they faced situations of possible child sexual abuse. (3) The higher the level of knowledge about child sexual abuse, the more adequate self-defensive skills in situations of child sexual abuse. These results supported the effectiveness of Behavioral Skills Training as preventive education on potential child sexual abuse.
손승아,안경숙,김승경 한국청소년정책연구원 2006 한국청소년연구 Vol.17 No.1
The purpose of this study was to develop the fundamental programs to facilitate adaptation and intervene in maladjustment by examining the psychological factors which have effects on self regulation in adolescence. Data were gathered for the middle school students on third grade that attend the youth panel survey on the second year. Self regulation was significantly affected by the self evaluation, stress, unstability of circumstance, intimate relationship with their parents, their teather, their friends and community people, and sex. Self evaluation was affected positively by self regulation, while stress and unstability of circumstance was affected negatively by self regulation. And male students were high level self regulation. And the self regulation also was high as they are related intimately to their parents, their teacher, their friends and community people. A regression analysis was used to investigate how much micro system factors have effects on self regulation. It shows that ten variables such as self evaluation, stress, unstability of circumstance, relationship to their parents, sex, relationship to their teacher, relationship to community people, and relationship to intimate friends, have effects on self evaluation. 본 연구는 청소년들의 자기조절능력에 영향을 미치는 심리환경적 요인들을 규명함으로써 청소년기 적응을 촉진하고 부적응을 중재하기 위한 기초적인 방안을 모색하기 위해 실시되었다. 연구의 대상은 청소년개발원에서 실시한 청소년 패널연구 2차 년도에 참여한 중학교 3학년생들이었다. 청소년의 자기조절능력은 자기평가가 긍정적일수록, 부모․친구․교사 및 지역사회 주민들과의 관계가 좋을수록, 스트레스가 낮을수록, 현재상황의 불안정성이 낮을수록, 그리고 남학생일수록 자기조절능력은 높게 나타났다. 심리환경적 요인들이 자기조절능력에 미치는 영향력을 알아보기 위한 회귀분석 결과, 자기평가, 스트레스, 현재상황의 불안정성, 부모와의 관계, 성별, 지역사회 주민들과의 관계, 친한 친구, 교사와의 관계 등의 순서로 자기조절능력에 영향력을 미치는 것으로 나타났다.