• PNF and Movement
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• 제18권1호
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• pp.127-132
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• 2020

Purpose: This study aimed to investigate the impact of resistance on the muscle activities of the long and short heads of the biceps brachii, according to the elbow angle in supination, and the difference in muscle activity between the long and the short heads. Methods: This study was conducted with 22 men in their 20s who voluntarily agreed to participate. With the glenohumeral joint neutral in a position of supination, the elbow angle was randomly moved to 0°, 30°, 60°, and 90°. Using an 8-channel surface EMG while the participants held a 2-kg. dumbbell, the muscle activities of the long and the short heads of the biceps brachii were measured. The measured data were statistically processed using SPSS for Windows 12.0. For the activities of the short and the long heads according to the angle, a one-way ANOVA was conducted, and subsequently, to check the results of an analysis of the difference between groups, an LSD post-hoc test was conducted. An independent t-test was used to compare the activities of the long head and the short head according to the angles. Results: The analysis of the impact of the load of the dumbbell at each elbow angle on the muscle activities of the long and short heads of the biceps brachii revealed significant differences in both heads (p < 0.05). The result of the post-hoc analysis showed significant differences in both heads at angles between 0° and 30°, between 0° and 60°, and between 0° and 90°. Analysis of the impact of the load of the dumbbell in supination on the muscle activities of the long and short heads showed a significant difference at the angle between 0° and 30° (p < 0.05). Conclusion: The long head of the biceps brachii mainly acts in supination; however, in supination at elbow-bending angles of 60° and 90°, there was no difference in muscle activity between the short head and the long head.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제47권6호
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• pp.438-444
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• 2021

Objectives: Loss of the interdental papilla is multi-factorial and creates a multitude of problems. Autogenous connective tissue/biomaterial-based regeneration has been attempted for decades to reconstitute the black space created due to the loss of papilla. The aim of this present study was to regenerate papillary recession defects using an amnion-chorion membrane (ACM) allograft and to evaluate the clinical outcome up to six months postoperatively. Materials and Methods: Twenty patients with 25 Nordland and Tarnow's Class I/II interdental papillary recession defects were treated with ACM and coronal advancement of the gingivo-papillary unit via a semilunar incision on the labial aspect followed by a sulcular incision in the area of interest. A photographic image analysis was carried out using the GNU Image Manipulation software program from the baseline to three and six months postoperatively. The black triangle height (BTH) and the black triangle width (BTW) were calculated using the pixel size and were then converted into millimeters. The mean and standard deviation values were determined at baseline and then again at three and six months postoperatively. The probability values (P<0.05 and P≤0.01) were considered statistically significant and highly significant, respectively. An analysis of variance and post hoc Bonferroni test were carried out to compare the mean values. Results: Our evaluation of the BTH and BTW showed a statistically and highly significant difference from the baseline until both three and six months postoperatively (P=0.01). A post hoc Bonferroni test disclosed a statistically significant variance from the baseline until three and six months postoperatively (P<0.05) and a non-significant difference from three to six months after the procedure (P≥0.05). Conclusion: An ACM allograft in conjunction with a coronally advanced flap could be a suitable minimally invasive alternative for papillary regeneration.

• 한국운동역학회지
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• 제33권2호
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• pp.45-51
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• 2023

Objective: The aim of this study was to examine the effect of strength training targeting medial quadriceps/hamstrings and non-targeting strength training on dynamic balance. Method: A total of 51 healthy subjects were randomly assigned to control, targeting strength training, or non-targeting training groups. To measure the dynamic balance, the star excursion balance test (SEBT) was performed before and after training. The SEBT parameters were compared using repeated measures ANOVA, and post-hoc paired t test at a significance level of 0.05. Results: Greater anterior (p= .011), anteromedial (p= .001), medial (p< .001), lateral (p< .001), and anterolateral (p= .001) reach distances were found between pre- and post-training in the strength training targeting medial thigh muscles group. Only greater lateral reach distance was found after non-targeting strength training (p= .029). In addition, no differences were found for any SEBT scores in the control group. Conclusion: Strength training targeting medial quadriceps and hamstrings can improve the dynamic balance, thereby it positively affected in lower extremity injury risk, whereas non-targeting strength training rarely changes the dynamic balance.

• 아동학회지
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• 제13권2호
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• pp.251-272
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• 1992

The purpose of this study is to investigate the relationships among the beliefs of parents and children, children's cognitive and emotional behavior based on cognitive and interreactionary approach models. The Subjects were 138 children (68 eight-year-olds and 70 eleven-year-olds) and their parents. Instruments used in this study were the modified Family Belief Interview Schedule(Alessandri & Wozniak, 1987), the Standard Achievement Test, and Harter's Perceived Competence Scale. Data analysis was by Pearson's r product moment correlation, two-way ANOVA, Fisher-Z test and Student-Newman-Keuls post-hoc test. The major findings are as follows: (1) The beliefs of parents and children has a significant influence children's perception of competence. (2) The congruence of parents' and children's beliefs was hightest in "assumed similarity". (3) Mother's positive view of their children and congruence of mother's and father's beliefs were correlated with children's academic achievement. Parents' positive beliefs and congruence of beliefs were also correlated with children's self-perception of competence.

• 가정과삶의질연구
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• 제20권4호
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• pp.103-111
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• 2002

This study is to examine the relationship of HOME and personality with Preschool children's school readiness. The subjects were 138 children(4 to 6 year-old) and their mothers in Seoul, Gyunggi-do, and Chungnam. The instruments for this study were Cooperative Preschool Inventory(CPI), The Home Observation for Measurement of the Environment(HOME), and Children's Personality Test. The data were analyfed by Pearson's r, stepwise regression, ANOVA, Scheffe test for the post hoc test, and Cronbach a for the reliability in SPSS PC program. The major findings with the preschool children's school readiness were as follows. 1) That was significant correlations with HOME(language environment and encouragement of independence) and personality(sociability and familiarity). 2) That was explained significantly by sociability, encouragement of independence, language environment, and stimuli for development. 3) That was no sex-difference and was an increase by age. 4) There were significant differences in preschool children's school readiness, HOME, and personality by familial demographic variables.

• 한국컴퓨터정보학회논문지
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• 제24권5호
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• pp.131-137
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• 2019

This study was aimed to identify a study on risk perception and safety knowledge and awareness of scuba diver. In order to achieve this purpose, a total of 310 customers over the age of 20 were selected as study participants form diving pools and dive resort in Seoul, Gyeonggi, Gangwon, Gyeongsang area using the convenience sampling method. However, only data from 295 customers were used after screening the data for reliability. The instrument for data collection was a questionnaire, and descriptive statistics, inter-item consistency reliability, t-test, ANOVA, post hoc test, correlation analysis, pearson chi-square test were conducted on the data using the SPSS 21.0 version statistical package program. The followings are the results: First, risk perception differs significantly according to age, education level, occupation and participation period. Second, participation period and safety knowledge have positive correlation.

• Restorative Dentistry and Endodontics
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• 제42권2호
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• pp.125-133
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• 2017

Objectives: This study compared the effect of hexamethyldisiloxane (HMDSO) and ammonia ($NH_3$) plasmas on the bond strength of resin cement to fiber posts with conventional treatments. Materials and Methods: Sixty-five fiber posts were divided into 5 groups: Control (no surface treatment); $H_2O_2$ (24% hydrogen peroxide for 1 min); Blasting (blasting with aluminum oxide for 30 sec); $NH_3$ ($NH_3$ plasma treatment for 3 min); HMDSO (HMDSO plasma treatment for 15 min). After the treatments, the Ambar adhesive (FGM Dental Products) was applied to the post surface (n = 10). The fiber post was inserted into a silicon matrix that was filled with the conventional resin cement Allcem Core (FGM). Afterwards, the post/cement specimens were cut into discs and subjected to a push-out bond strength (POBS) test. Additionally, 3 posts in each group were evaluated using scanning electron microscopy. The POBS data were analyzed by one-way analysis of variance and the Tukey's honest significant difference post hoc test (${\alpha}=0.05$). Results: The Blasting and $NH_3$ groups showed the highest POBS values. The HMDSO group showed intermediate POBS values, whereas the Control and $H_2O_2$ groups showed the lowest POBS values. Conclusion: Blasting and $NH_3$ plasma treatments were associated with stronger bonding of the conventional resin cement Allcem to fiber posts, in a procedure in which the Ambar adhesive was used.

• Restorative Dentistry and Endodontics
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• 제39권4호
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• pp.303-309
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• 2014

Objectives: Hydrogen peroxide ($H_2O_2$) surface treatment of fiber posts has been reported to increase bond strength of fiber posts to resin cements. However, residual oxygen radicals might jeopardize the bonding procedure. This study examined the effect of three antioxidant agents on the bond strength of fiber posts to conventional and self-adhesive resin cements. Materials and Methods: Post spaces were prepared in forty human maxillary second premolars. Posts were divided into five groups of 8 each: G1 (control), no pre-treatment; G2, 10% $H_2O_2$ pre-treatment; G3, G4 and G5. After $H_2O_2$ application, Hesperidin (HES), Sodium Ascorbate (SA) or Rosmarinic acid (RA) was applied on each group respectively. In each group four posts were cemented with Duo-Link conventional resin cement and the others with self-adhesive BisCem cement. Push-out test was performed and data were analyzed using 2-way ANOVA and tukey's post-hoc test (${\alpha}=0.05$). Results: There was a statistically significant interaction between the cement type and post surface treatment on push-out bond strength of fiber posts (p < 0.001, F = 16). Also it was shown that different posts' surface treatments significantly affect the push-out bond strength of fiber posts (p = 0.001). $H_2O_2$ treated posts (G2) and control posts (G1) cemented with Duo-link showed the highest ($15.96{\pm}5.07MPa$) and lowest bond strengths ($6.79{\pm}3.94$) respectively. Conclusions: It was concluded that $H_2O_2$ surface treatment might enhance the bond strength of fiber posts cemented with conventional resin cements. The effect of antioxidants as post's surface treatment agents depends on the characteristics of resin cements used for bonding procedure.

• 구강회복응용과학지
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• 제32권1호
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• pp.24-31
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• 2016

목적: 미세입자 분사마모 표면처리가 Fiber-Reinforced Composite (FRC) 포스트의 굴곡강도에 미치는 영향을 평가하는 것이다. 연구 재료 및 방법: 두 종류의 FRC 포스트 (DT Light Post, Size 2, Bisco Inc. / RelyX Fiber Post, Size 3, 3M ESPE)를 사용하여 표면처리에 따라 6개의 그룹으로 무작위 분류하였다. 표면처리를 위해 $30{\mu}m$ Rocatec Soft와 $50{\mu}m$ aluminum oxide를 사용하였다. 표면처리 후 편평한 5 mm 부분을 만능시험기로 3점 굽힘시험을 시행하여 FRC 포스트의 굴곡강도와 굴곡계수를 측정하고 통계분석하였다. 결과: FRC포스트의 미세입자 분사마모 표면처리가 FRC포스트의 굴곡강도와 굴곡계수에는 영향을 미치지 않음을 알 수 있었다. 결론: 임상가들이 FRC포스트에 대하여 미세입자 분사마모 표면처리를 하여도 포스트의 굴곡강도와 굴곡계수에는 영향을 미치지 않으면서 접착강도를 높일 수 있을 근거 중의 하나가 될 수 있을 것이다.

• Journal of Hospice and Palliative Care
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• 제8권1호
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• pp.1-7
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• 2005

목적: 본 연구는 입원한 폐암환자의 수면의 질을 파악하기 위한 것으로 그 구체적인 목적은 대상자의 제(인구사회학적, 질병관련) 특성을 파악하고, 수면의 질과 제 특성에 따른 수면의 질을 파악하는 것이다. 방법: 연구대상은 B시에 소재한 K대학 부속병원에서 임의표집 한 입원 폐암환자 50명을 대상으로 하였다. 자료수집기간은 2001년 1월 21일부터 4월8일까지였다. 자료수집방법은 환자에게 설문지를 배부하여 대상자가 직접 기입하도록 하여 회수하였다. 측정도구는 수면의 질을 측정하기 위해 오진주 등(1999)이 개발한 15문항으로 구성된 '수면측정도구 A'를 사용하였다. 자료분석은 SPSS 10.0 프로그램을 이용하여 통계처리 하였으며, 실수와 백분율, 평균, 평균평점과 표준편차, t-test, ANOVA, Post-hoc test(Scheffe's test)로 분석하였다. 결과: 본 연구의 결과는 다음과 같았다. 1. 대상자의 수면의 질은 평균 $35.64{\pm}7.59$로 나타났다. 2. 대상자의 제 특성과 관련된 수면의 질은 현재 통증(t=-1.943, P=.046), 주간호제공자(F=2.863, P=.047), 체중의 변화(F=5.906, P=.019)에 따라 유의한 차이가 나타났다. 사후검정(Scheffe's test)결과 체중 증가군($43.50{\pm}4.03$)이 체중변화가 없는 군($29.44{\pm}6.00$)보다 유의하게 수면의 질이 높은 것으로 나타났다. 결론: 폐암환자의 수면의 질과 관련된 변수로 나타난 현재 통증, 주간호제공자, 체중변화의 요인들을 간호제공 시 고려함으로 폐암환자의 수면의 질을 향상시키고, 건강을 증진시킬 수 있으리라 생각된다. 폐암환자의 수면의 질 향상을 위해 수면에 영향을 주는 다른 변인에 관한 연구가 필요하고, 수면을 개선시킬 수 있는 간호 중재방안의 개발이 요구된다.