• The korean journal of orthodontics
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• v.54 no.4
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• pp.247-256
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• 2024

Objective: This retrospective study evaluated the mandibular condyle position before and after bimaxillary orthognathic surgery performed with the mandibular condyle positioned manually in patients with mandibular prognathism using cone-beam computed tomography. Methods: Overall, 88 mandibular condyles from 44 adult patients (20 female and 24 male) diagnosed with mandibular prognathism due to skeletal Class III malocclusion who underwent bilateral sagittal split ramus osteotomy (BSSRO) and Le Fort I performed using the manual condyle positioning method were included. Cone-beam computed tomography images obtained 1-2 weeks before (T0) and approximately 6 months after (T1) surgery were analyzed in three planes using 3D Slicer software. Statistical significance was set at P < 0.05 level. Results: Significant inward rotation of the left mandibular condyle and significant outward rotation of the right mandibular condyle were observed in the axial and coronal planes (P < 0.05). The positions of the right and left condyles in the sagittal plane and the distance between the most medial points of the condyles in the coronal plane did not differ significantly (P > 0.05). Conclusions: While the change in the sagittal plane can be maintained as before surgery with manual positioning during the BSSRO procedure, significant inward and outward rotation was observed in the axial and coronal planes, respectively, even in the absence of concomitant temporomandibular joint disorder before or after the operation. Further long-term studies are needed to correlate these findings with possible clinical consequences.

• Journal of Preventive Medicine and Public Health
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• v.31 no.2 s.61
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• pp.228-239
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• 1998

Visual display terminal(VDT) is popular in majority of office in modern countries. Musculoskeletal pain due to repetitive work with VDT is a serious industrial accident at present. In recent studies, shoulder pain in VDT users is the most common problem in Korea. The purpose of this study was to evaluate and compare the effect of excercises on shoulder dysfunction in VDT-related female office workers. Of the 119 patients with shoulder dysfunction, 32 patients entered into the study. 16 patients(Group I) were not prescribed excercises, other 16 patients (Group II) performed throughout the specific shoulder excercises such as pendular excercises(for-ward, backward and circumduction) and sidelying external rotation excercises with weights. After 3 months of excercises, the two groups were compared in term of the pain rating scale, disability questionnaire score and range of motion score. The results were summarized as follows ; 1. The pain rating scale in Group I before and after 3 months were not differenced significantly(p value=0.784) and in Group II, the scale before and after excercises were differenced significantly(p value=0.0005). 2. The disability questionnaire scores in Group I before and after 3 months were not differenced significantly(p value=0.437) and in Group II, the scores before and after excercises were differenced significantly(p value=0.0002). 3. The ROM scores of the affected shoulder in Group I before and after 3 months were not differenced significantly(p value=0.876) and in Group II, the scores before and after excercises were differenced significantly(p value=0.0017). In conclusion, that the specific shoulder excercises on shoulder dysfunction in VDT-related female office workers are encouraged.

• Journal of Naturopathy
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• v.11 no.2
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• pp.116-122
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• 2022

Background: Studies on the effect of abdominal or thoracic breathing therapy on sleep or blood oxygen concentration are still scarce. Purpose: This study was to examine the effect on blood oxygen saturation and pulse variability, changes in the severity of insomnia, changes in wakefulness before sleep, and dysfunctional beliefs and attitudes toward the Korean version of sleep in women in their 50s after healing with abdominal breathing and thoracic breathing. We investigated the effect. Methods: Subjects were investigated before and after the change of breathing (breathing) therapy for 12 weeks, 3 times a week, and 36 breaths perweek. Results: It wa evaluated respiratory healing as having no significance in the pulse rate change. However, oxygen saturation was significant in the experimental group, increasing to 93.60 SpO₂% before the respiratory rally and 96.5 SpO₂% after respiratory recovery (p < .002). In addition, the insomnia severity scale and dysfunctional beliefs about sleep significantly decreased after respiratory rally than before (p < .000). Conclusions: It evaluated that respiratory therapy for the subjects is beneficial to health as it is effective for insomnia, pulse, and oxygen saturation.

• Korean Journal of Applied Biomechanics
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• v.22 no.3
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• pp.277-284
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• 2012

The purpose of this study was to find out the changes in beginners' batting movements after taking undergraduate baseball lectures, by comparing and analyzing the speed of bat, the angle of body and its segments, the angular velocity and so on. For this purpose, the author picked up five undergraduates who had not taken baseball lectures, and conducted three-dimension computerized tomography twice on them, that is, before and after taking baseball classes, with eight infrared cameras and two force platforms. The conclusions are, first, the time required for swing was shortened after taking the classes. Second, the maximum velocity of the bat-end was increased. Third, at the time of impact, while the rotation angles of the pelvis and the tip of left foot were increased, the left elbow had more flexion after the classes. Fourth, the size of ground reaction force was increased at the point of swing where the ground reaction force of left foot became maximized. As we can infer from these conclusions, beginners' hitting movements before taking baseball classes tended to swing only with the arms, without waist rotation and weight shift of the lower body, but after the classes, their movements were proved to be corrected into the swing using the lower body. For the future studies, the author expects a research in a close to real environment by using pitching machine.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.34 no.1
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• pp.35-47
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• 2024

Objectives: Many cases of lung cancer have been reported by school kitchen workers as occupational cancer. Twenty-eight schools in Gyeongsangnam-do Province were selected to evaluate the effect of improved kitchen ventilation systems. Ventilation characteristics before and after renovation were compared and design techniques were identified. Methods: In the design stage for kitchen ventilation systems, expert intervention was used to improve the designs. Ventilation characteristics and air quality were evaluated before and after the renovations. Hood face velocity and fan flow rate were measured and the smoke visualization technique was used to evaluate the capability of protecting worker's breathing zone. The concentrations of PM_0.3 were measured at points not adjacent to cooking equipment because these concentrations fluctuate greatly. Results: Mean hood face velocity increased from 0.29 m/s before renovation to 0.7m/s after renovation. The concentrations of PM_0.3 showed a roughly 95% reduction. Concentrations of CO showed more than a 75% reduction. Smoke visualization showed greater protection of workers' breathing zone. Conclusions: Advanced design techniques for school kitchen ventilation systems were applied to renovate old kitchen ventilation systems. The performance of the new kitchen ventilation systems was nearly excellent. Further improvement of design techniques is still needed, however.

• Korean Journal of Child Studies
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• v.23 no.2
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• pp.17-30
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• 2002

The subjects of this study on self-awareness were sixty-four 8- to 30-month-old infants. They were tested with the "Behaviors Observed in Mirror Conditions" (Lewis & Brooks-Gunn, 1979; translated by Jong Moo Kim, 1989). Analyses were by descriptive statistics and ANOVA. Most infants responded when they saw their reflection in the mirror, and their self-awareness increased with age. Most infants under 17 months didn't respond before and after rouge was painted on their noses, but by 18- to 23-months, they started to show a response. Most of the infants older than 24 months noticed something unusual and tried to rub the rouge off when they saw their reflection. This study provides evidence that infants begin to show self-awareness after 18 months of age, and this self-awareness is well developed after 24 months of age.

• 대한핵의학회:학술대회논문집
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• 1972.11a
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• pp.64.2-64.2
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• 1972

• Journal of Home Health Care Nursing
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• v.4
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• pp.41-52
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• 1997

The purpose of this study is to identify the domestic research results related to the outcomes of home care services for 1981-1996. 12 studies were analized by the characteristics of the subjects, home care services provided, and outcome variables and tools during the period of Apirl-June, 1997. The results were as follows: the subjects of 8 studies conducted before 1993 were discharged patients comparing to early discharged patients of 2 studies conducted after 1994. The main home care service delivered to the clients and their families were education before 1993. The outcome variables were used the level of sat. isfaction of home care services, quality of care, cost-effectveness, health status, quality of life, and self -care ability. A variable, health status, were mainly measured by the global outcome measures such as quality of life, health hehelief, health perception, activity of daily living, health management pattern but also foused outcome measures that could be specified by the medical diagnoses.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.22 no.1
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• pp.141-147
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• 2009

Objective : We investigated the effects of BOM Gunbisoyeom-tang(Jianbixiaoyan-tang) Gamibang having prescribed clinically to patients with perennial allergic rhinitis. Methods : We prescribed BOM Gunbisoyeom-tang(Jianbixiaoyan-tang) Gamibang for 1 month to 77 patients visiting to KimKiJoon Orentalclinic BOM from January 1 to December 31, 2008 with perennial allergic rhinitis and analysised the questionnaire(symptom severity assessment) before and after treatment. Results : BOM Gunbisoyeom-tang(Jianbixiaoyan-tang) Gamibang improved significantly all nosal symptoms(sneezing, runny nose, congestion, itchy nose and postnasal drip), some non-nasal symptoms(eye and throat symptoms, headache and mental function) except chromic cough and ear symptoms and quality of life. Conclusion : BOM Gunbisoyeom-tang(Jianbixiaoyan-tang) Gamibang cured effectively patients with perennial allergic rhinitis by 1 month treatment but not perfectly. So further studies are needed for treatment duration and changes of pathological index before and after treatment.

• PNF and Movement
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• v.1 no.1
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• pp.11-18
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• 2003

Objectives: Few studies have reported on the flexibility of the hamstrings resulting from variable stretching method, and little studies of length adaptation at 1 day after intervention. Methods: Fifty-four healthy a woman in her twenties with no history of musculoskeletal or neurogenic disorder volunteered for this study. Subjects were randomly assigned to either a contract-relax group or a passive stretching group. Methods: Hamstring flexibility was measured with a sit and reach test(SRT) (RF-D18; SPC) before, immediatly after interventions, and 1 day after interventions. Results: Flexibility scores for participants in each of the groups significantly increased from pre-interventions to immediate and 1 day after interventions. However, the length of 1 day after interventions was shorter than immediate length after interventions. Difference in length between immediate and 1 day after interventions was some shorter in the contract-relax group versus the static group but, not significantly. Conclusions: The results of this study suggest that a contract-relax is an effective length adaptation of hamstring muscles by 1 day after intervention.