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        • KCI등재

          연성 의치상 이장재의 염색 저항성에 관한 연구

          김광준,조혜원,진태호,Kim, Kwang-Jun,Cho, Hye-Won,Jin, Tai-Ho 대한치과보철학회 2000 대한치과보철학회지 Vol.38 No.4

          This study was investigated to compare the staining resistance of soft denture liners. Specimens were made of Coe-soft, Coe-comfort, Soft-liner, Visco-gel, and were stored in 1% methyleneblue solution for 24 hours. The amounts of color change before and after treatment with mono-poly and thermocycling were measured by colorimeter(TC-6FX, Tokyo Denshoku Co. Ltd, Japan) for evaluation of staining resistance. The following conclusions were drawn from this study. 1. The staining resistance of Visco-gel was increased, but there was no changes of staining resistance in Coe-soft, Coe-comfort, and Soft-liner after treatment with monopoly. 2. The staining resistance of the Coe-comfort was the least in all soft denture liners. 3. The staining resistance of Visco-gel and Soft-liner were decreased after thermocycling.

        • KCI등재후보

          전부도재관용 레진시멘트의 생체적합성에 관한 연구

          김광준,김성훈,진태호,Kim Kwang-Jun,Kim Sung-Hoon,Jin Tai-Ho 대한치과보철학회 2003 대한치과보철학회지 Vol.41 No.2

          Statement of problem : Resin cements were used widely on all ceramic crowns, but the influence of resin cements on biocells was not understood clearly. Purpose : This study was investigated to evaluate the biocompatibility of resin cements for all-ceramic crowns. Material and Method : The resin cements used in this study were Panavia F (Kuraray Co., Ltd. Japan), Variolink II (Vivadent Ets., Schann / Liechtenstein), and Bistite II (Bistite dual cure resin cement-clear Tokuyama Soda Co. Japan). The viability of normal human oral keratocytes, gingival fibroblast, and gingival fibroblast immortalized by Human Papilloma virus 16 was measured in vitro for evaluation of cytotoxicity on resin cements, and the response of pulp tissue was analyzed and evaluated with light microscope after application of cements at cutting edge of incisors. Results : The normal human oral keratocytes was the most sensitive to toxicity of resin cement, and toxicity of cements was higher in Bistite II than in Variolink II. The cell viability of immortalized gingival fibroblast did not affected by type of cement and cultivation period, but there was a tendency that cytotoxicity in Bistite II was higher than in Variolink II. The cell viability of gingival fibroblast was similar to that of immortalized gingival fibroblast regardless of cement type, but Bistite II showed more toxic than others after 5 days cultivation. The responses of pulp tissue according to cement type were similar after 2 days cultivation, but revealed high toxicity in Bistite II after 10 days cultivation. Conclusion : Variolink II was more biocompatible than any other resin cements used in this study.

        • KCI등재
        • KCI등재
        • KCI등재

          복싱 경기방식에 따른 스파링 시의 심박수 및 젖산 농도 비교 연구

          김광준 ( Kwang Jun Kim ),윤성원 ( Sung Won Youn ),송홍선 ( Hong Sun Song ),박세정 ( Sae Jong Park ),박동호 ( Dong Ho Park ) 한국스포츠정책과학원(구 한국스포츠개발원) 2010 체육과학연구 Vol.21 No.4

          이 연구의 목적은 국가대표 복싱 선수들을 대상으로 기존 방식(2분 4회전)과 새롭게 개정된 방식(3분 3회전)에 따른 스파링 시 선수들의 심박수와 혈중 젖산농도의 변화를 비교 분석함으로써 개정된 경기방식에서 요구되는 생리적 또는 체력적 요인을 알아보는 것이며, 연구대상자들은 국가대표 복싱 선수 10명을 선정하여 실험을 실시하였다. 경기방식(3분 3회전 vs 2분 4회전)에 따른 스파링 상황에서 선수들의 생리적인 변화에 대한 강도 설정 및 비교를 위해 1차적으로 최대점증부하 운동검사를 실시하였다. 이후 3분 3회전 경기와 2분 4회전 경기에서의 생리적인 변화를 알아보았으며, 스파링 시 측정 변인으로는 심박수와 젖산으로 정하여 안정 시, 각 회전 후, 경기 직후(3회전 직후, 4회전 직후), 회복기(3, 5, 15분)에 각각 측정하여 다음과 같은 결과를 얻었다. 복싱 국가대표 선수들은 3분 3회전과 2분 4회전 모두 경기직후인 3회전과 4회전 후에 가장 높은 심박수와 젖산수준을 보였으며, 이는 최대점증부하 운동검사를 통해 나타난 최대심박수와 최대 젖산수치를 넘어서는 수준이었다. 2분 4회전 경기보다 3분 3회전 경기방식에서 경기 중과 회복기 모든 측정시점에서 심박수와 젖산이 높은 경향을 보였으며, 젖산 회복율도 3분 3회전 경기에서 선수들이 회복이 느리게 이루어지는 것으로 나타났다. 결론적으로 2분 4회전 경기보다 3분 3회전 경기방식이 운동 강도가 전반적으로 높게 평가되고 선수들의 겪는 생리적인 반응에 있어서도 2분 4회전 경기보다 변화의 폭이 크게 나타났다. 즉, 2분 4회전 경기보다 3분 3회전 경기방식이 경기 중 심박수뿐만 아니라 젖산수준이 더욱 높은 최대치 또는 초과하는 수준이었음을 확인할 수 있었다. 그러므로 3분 3회전 경기방식의 변화에 맞춰 훈련프로그램도 전반적으로 개선되어야 할 것으로 보인다. This study was conducted to compare the physiological demand of the new boxing sparring to one of the previous sparring, ie. three 3-minute rounds vs. four 2-minute rounds, in Korean National Boxing Team. Ten boxers in Korean national team participated in the study. They performed maximal exercise testing and two different sparring (three 3-minute rounds vs. four 2-minute roudns). Heart rate and blood lactate concentration were measured in rest, after each round, and recovery (immediately after, post 3 minutes, post 5 minutes, and post 15 minutes) during two different sparring. The results were as follows; In both of sparring (three 3-minute rounds vs. four 2-minute rounds), heart rate and blood lactate were highest in right after the last round of sparring. Furthermore, these values were higher than the ones from the maximal exercise stress testing. Heart rate and Blood lactate at three 3-minute rounds tended to be high in all during of sparring and recovery phase although it was not significant. And recovery rate of lactate showed more slowly in three 3-minute rounds sparring. Based on these results, exercise intensity of three 3-minute rounds boxing game is higher than four 2-minute rounds game. This suggests that specific training strategies for the new boxing game three 3-minute rounds needs to be developed to enhance performance.

        • KCI등재

          골프 특이적 준비운동이 고등학교 골프선수들의 유연성 및 경기력에 미치는 영향

          김광준 ( Kwang Jun Kim ) 한국운동생리학회(구 한국운동과학회) 2014 운동과학 Vol.23 No.2

          본 연구는 엘리트 고등학교 골프선수를 대상으로 다양한 골프 특이적인 준비운동을 실시한 후 선수들의 유연성과 드라이버 경기력에 미치는 영향을 알아보는 것이다. 본 연구의 대상자는 고등학교 남자 엘리트 골프선수 13명으로 선정하였으며, 5가지 준비운동 방법(정적 스트레칭, 클럽 동적 스트레칭, 밴드 동적 스트레칭, 정적+클럽 동적 스트레칭, 정적+밴드 동적 스트레칭)에 반복적으로 참여한 후 유연성과 드라이버 경기력을 측정하여 비교 분석하였으며, 다음과 같은 결과를 얻었다. 유연성 변인은 모두 5가지 준비운동 방법에 따라 유의한 차이를 나타내지 않았지만, 체전굴과 어깨회전도는 정적+클럽 동적스트레칭(SCS)을 실시한 후 가장 높은 수준을 나타냈다. 드라이버 경기력 변인에서는 클럽스피드와 스매쉬팩터 요인에서 준비운동 방법 간 유의한 차이(p<.05)가 있는 것으로 나타났고, 볼 스피드에서는 준비운동 방법 간 유의한 차이의 경향(p<.072)을 보였으며, 정적+클럽 동적 스트레칭을 실시한 후 가장 좋은 수준을 보였다. 결론적으로 정적 및 클럽 동적 스트레칭이 혼합적으로 구성된 스트레칭을 실시한 이후 골프 선수들의 유연성과 경기력에 긍정적인 효과를 가져왔다. 따라서 정적 및 클럽을 이용한 동적 스트레칭으로 구성된 준비운동은 고등학교 엘리트 골프선수들의 경기력 향상을 위한 이상적인 대안이 될 것으로 보인다. The purpose of this study was to investigate the effects of various golf specific warm-up on flexibility and driver performance in junior golf players. As the subjects of the study, thirteen elite golf players in high school were selected. Golf players took part in the 5 methods of golf specific warm-up (static stretching, club dynamic stretching, band dynamic stretching, static+club dynamic stretching, and static+band dynamic stretching) repeatedly. After performed each warm-up, flexibility and driver shot performance evaluated. Results of this study were as belows: First, although no significant differences were found between warm-up methods for all flexibility variables, trunk flexion and shoulder rotation showed the highest level after performing SCS (static+club dynamic stretching). With regard to changes of driver shot, significant differences (p<.05) were found between warm-up methods in club speed and smash factor. A significant tendency (p<.072) was shown between warm-up methods in ball speed. All variables of driver shot performances showed the highest level after performing SCS (static+club dynamic stretching). In conclusion, combined static and club dynamic stretching program generated positive improvement in flexibility and driver shot performance. Therefore, the warm-up with static and club dynamic stretching will be the ideal alternative for performance enhancement in high school elite golf players.

        • KCI등재
        • KCI등재

          원저 : 여자 일반, 국가대표, 프로 골프선수의 체력비교 및 드라이버거리와 평균스코어와의 관련성

          김광준 ( Kwang Jun Kim ),박동호 ( Dong Ho Park ) 한국운동생리학회(구 한국운동과학회) 2015 운동과학 Vol.24 No.3

          PURPOSE: The purpose of this study was to analyze the differences of physical fitness and examine the relationship with driver distance and average score in elite female golf players METHODS: 100 female golf players were classified into general golf player (GGP, n=30), national golf player (NGP, n=30) and pro golf player (PGP, n=40). Subjects performed the physical fitness trial: lung function (FEV1, FVC), flexibility (shoulder rotation, trunk forward flexion, trunk backward extension), strength (back strength, hand grip strength, maximal strength), muscle power (peak power, sargent jump), muscle endurance (mean power, sit up, push up) and isokinetic strength (knee and trunk). One-way repeated ANOVA was used to evaluate the differences between three groups and pearson``s correlation analysis was applied to examine the relationship between performance factor (driver distance and average score) and physical fitness. RESULTS: The results of this study indicated that the NGP was significantly higher in trunk backward extension, sargent jump, push up and isokinetic trunk extension compare with the GGP (p<.05). Bench press 1RM and isokinetic trunk flexion were significantly higher in PGP than GGP and NGP (p<.05). There was a significant relationship between driver distance and peak power(r=.254), isokinetic trunk extension(r=.229). Also average score showed a significantly relationship with driver distance (r=-.276), bench press 1RM (r=-.310), push up (r=-.429), isokinetic trunk flexion (r=-.273) and isokinetic trunk extension (r =-.265). CONCLUSIONS: National and pro golf players have higher level of physical fitness than general golf players. And driver distance and average score were strongly related with maximal strength, muscle endurance, isokinetic trunk strength, and peak power. Therefore, efficient and specific training program should be planned for performance improvement in elite female golf players.

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