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전신 및 상체 하네스를 활용한 스노보드 지상훈련자세의 운동역학적 비교 분석
이종훈(Lee, Chong-Hoon),백진호(Back, Jin-Ho),남기정(Nam, Ki-Jeong),엄길호(Eom, Kil-Ho),전윤걸(Jeon, Youn-Girl) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.4
We consider the biomechanical analysis of four professional male snowboarders in order to produce basic data, which allows for improving the snowboarding performances of both athlete and amateur snowboarders. We measured the low limb angle and main muscle activation on snowboarding while the male snowboarder was in a snowboard riding and accoutered with whole body harness or upper body harness in simulator. The results show that the use of the whole body harness is more effective in restricting on hip joint and in activatiing left lateral gastrocnemius when the male snowboarder maintained snowboarding posture on the simulator. Our study suggests that application of whole body harness will be more suitable to posture training on the simulator than using upper body harness.
AFM 캔틸레버를 이용한 i-motif DNA의 구조 변화에 미치는 화학적 환경에 대한 연구
정휘헌 ( Hui Hun Jung ),박진성 ( Jin Sung Park ),양재문 ( Jae Moon Yang ),이상우 ( Sang Woo Lee ),엄길호 ( Ki Ho Eom ),권태윤 ( Tae Yun Kwon ),윤대성 ( Dae Sung Yoon ) 한국센서학회 2010 센서학회지 Vol.19 No.3
Three-dimensional(3D) structure of specific DNA can be changed between two conformations under an external environmental transition such as pH and salt concentration variations. We have experimentally observed the conformational transitions of i-motif DNA using AFM cantilever bioassay. It is shown that pH change of a solvent induces the bending defleciton change of a cantilever functionalized by i-motif DNA. This indicates that cantilever bioassay enables the label-free detection of DNA structural changes upon pH change. It is implied that cantilever bioassay can be a de novo route to quantitatively understand the conformational transitions of biological molecules under environmental changes.