http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yoon, Sukhoon,Kim, Jin-Hae,Park, Jae-Hyeon,Ryu, Jiseon,Park, Sang-Kyoon,Kim, Joo-Nyeon Korean Society of Sport Biomechanics 2017 한국운동역학회지 Vol.27 No.2
Objective: To investigate rotation movement of segment for performing each position and its effect on knee/hip angulation, COM inclination, and edging angle changes. Method: Twelve Alpine skiers (age: $25.8{\pm}4.8years$, height: $173.8{\pm}5.9cm$, weight: $71.4{\pm}7.4kg$, length of career: $9.9{\pm}4.6years$) participated in this study. Each skier was asked to perform counter-rotation, neutral, and rotation positions. Results: Shank and thigh were less rotated in the counter-rotation position than in other positions, whereas the trunk and pelvis were more counter-rotated (p<.05). Hip angulation, COM inclination, and edging angle were significantly greater in the counter-rotation position than in other positions (p<.05). Conclusion: Our finding proved that the counter-rotation position increases hip angulation, COM inclination, and edging angle. Consequently, we suggest that skiers should perform counter-rotation of the trunk and pelvis relative to the ski direction in the vertical axis for the counter-rotation position. Further analysis will continue to investigate the effects of the counter-rotation position in real ski slope with kinetic analysis.
( Sukhoon Yoon ),( Jin-hae Kim ),( Jae-hyeon Park ),( Jiseon Ryu ),( Sang-kyoon Park ),( Joo-nyeon Kim ) 한국운동역학회 2017 한국운동역학회지 Vol.27 No.2
Objective: To investigate rotation movement of segment for performing each position and its effect on knee/hip angulation, COM inclination, and edging angle changes. Method: Twelve Alpine skiers (age: 25.8±4.8 years, height: 173.8±5.9 cm, weight: 71.4±7.4 kg, length of career: 9.9±4.6 years) participated in this study. Each skier was asked to perform counter-rotation, neutral, and rotation positions. Results: Shank and thigh were less rotated in the counter-rotation position than in other positions, whereas the trunk and pelvis were more counter-rotated (p<.05). Hip angulation, COM inclination, and edging angle were significantly greater in the counter-rotation position than in other positions (p<.05). Conclusion: Our finding proved that the counter-rotation position increases hip angulation, COM inclination, and edging angle. Consequently, we suggest that skiers should perform counter-rotation of the trunk and pelvis relative to the ski direction in the vertical axis for the counter-rotation position. Further analysis will continue to investigate the effects of the counter-rotation position in real ski slope with kinetic analysis.
Jeong Jiseon,Lee Yunjeong,Yoon Seokmin,Kim Jong-Hwa,Kim Wonyong 한국미생물학회 2021 The journal of microbiology Vol.59 No.12
As the functions of probiotics within the same species may not be shared, it is important to analyze the genetic characteristics of strains to determine their safety and usefulness before industrial applications. Hence the present study was undertaken to determine functional genes, and beneficial activities of strain LRCC5314, a bacterial strain isolated from kimchi through comparative genomic analysis. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain LRCC5314 was a member of the species L. plantarum. Whole genome size of strain LRCC5314 was sequence was 3.25 Mb long, with a G + C content of 44.5 mol% and 3,031 predicted genes. Strain LRCC5314 could metabolize hexoses through homofermentation, which produces only lactic acid from hexoses. According to gene annotation, strain LRCC- 5314 contained genes of EPS production and CRISPR. Moreover, the strain contained genes that could encode a complete biosynthetic pathway for the production of tryptophan, which can be used as a precursor of serotonin. Notably, the tryptophan and serotonin activities strain LRCC5314 were higher than those of reference strains, L. plantarum ATCC 14917T, DSM 20246, DSM 2601, and ATCC 8014, which reach tryptophan amount of 0.784 ± 0.045 μM/ml in MRS broth and serotonin concentration of 19.075 ± 0.295 ng/ml in HT-22 cells. These findings indicated that L. plantarum LRCC5314 could provide a source for serotonin production and could be used as a functional probiotic for stress regulation.
평창동계올림픽 알파인 스키 회전ㆍ대회전 코스의 지형 특성 및 경기력 요인에 미치는 영향
윤석훈 ( Yoon Sukhoon ),김진해 ( Jin-hae Kim ),박재현 ( Jae-hyeon Park ),류지선 ( Jiseon Ryu ),박상균 ( Sang-kyoon Park ),김주년 ( Kim Joo Nyeon ) 한국체육대학교 체육과학연구소 2019 스포츠사이언스 Vol.36 No.2
본 연구의 목적은 평창 동계올림픽 알파인 스키 대회전(giant slalom, GS) 및 회전(slalom, SL) 종목이 열린 용평리조트 레인보우 코스에 대한 특성을 정량화하고, 그 특성과 스키어의 속력과의 관계에 대하여 조사하는 것이다. 이를 위해 용평 리조트 레인보우 코스에서 회전 및 대회전 종목 훈련을 지속적으로 실시하고 있는 국가대표 후보팀 선수가 본 연구에 참여하였다. GPS를 이용하여 대회전 및 회전 기문의 위치를 측정하고, 각 종목별로 활주 시 나타나는 스키어의 궤도를 측정하였다. 수집된 위도, 경도, 고도 데이터는 미터단위로 변환하였으며, 기문 간 거리ㆍ기문변화각ㆍ경사도를 산출하여 스키어의 속력과의 상관관계를 분석하였다. 기문 간 거리는 GS에서 28.60±5.26 m, SL에서 12.79±2.53 m, 기문변화각은 GS에서 139.68±13.42°, SL에서 162.94±9.77°, 경사도는 GS에서 -28.54±13.65°, SL에서 -33.66±8.57°로 나타났다. 또한 대회전과 회전 모두 기문 간의 거리와 경사가 스키어의 속력과 유의한 상관관계가 있음을 나타냈다. The aim of this study is to quantify the characteristics of Rainbow course of Yongpyong resort where the giant slalom (GS) and slalom (SL) of the PyeongChang Winter Olympic Games are held, and to investigate the correlation between the characteristics and the skier’s speed. A candidate for the national alpine ski team who are continuously training the giant slalom and slalom at rainbow course of the Yongpyong resort participated in the study. The Global Positioning System (GPS) was used to measure the position of the gates of GS and SL, and to collect the skier’s trajectory when skier was running. The collected latitude, longitude, and altitude data were chaged into meter units, and the gate distance, gate shift angle, and gradient were calculated and the correlation between the skier’s speed and course characteristic parameters was analysed. The gate distance was 28.60±5.26 m in GS and 12.79±2.53 m in SL. The gate shift angle was 139.68±13.42° in GS and 162.94±9.77°, in SL. The gradient was -28.54±13.65° in GS and -33.66±8.57° in SL. In addition, in the giant slalom and slalom, there was a significant correlation between gate distance and skier’s speed and between gradient and skier’s speed.