백화사설초의 외부형태와 내부조직의 형태학적 관찰

임웅규,권규찬,사동민 서울大學校 農業生命科學大學 農業開發硏究所 1995 서울대농학연구지 Vol.20 No.1

검도 머리치기 공격과 손목치기 공격의 동작비교

임규찬 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2

This study was conducted to compare various kinematic variables of head-thrust attack motion with those of wrist-thrust attack motion in gumdo as performed by four male athletes. Here, the events of attack motion were set into ready, advance, impact, follow-through in turn. Two motions were filmed using two video cameras, and data were collected through the DLT method of three dimensional cinematography. After the mean and standard deviation of various kinematic variables were calculated, the conclusions were drawn as follows : The spent time of head-thrust attack was longer than that of wrist-thrust attack, the target distance of head-thrust attack was larger than that of wrist-thrust attack, and the resultant velocity of head-thrust attack was than that of wrist-thrust attack at impact. The c.o.g. velocity angle of head-thrust attack was larger than that of wrist-thrust attack at impact. And the x component of bamboo angle was larger, but the y component of bamboo angle was smaller than that of wrist-thrust attack, while the z component of bamboo angle of the two have much in common at impact. And the x · z component of angular momentum was negative, but the z component of angular momentum was positive at impact in wrist-thrust attack.

처용무의 무릎디피무 동작의 운동학적 분석

임규찬 한국운동역학회 1996 한국운동역학회지 Vol.6 No.1

본 연구의 목적은 처용무 중 무릎디피무 동작의 운동학적 변인들을 분석하여 정량적 자료를 구하는데 있다. 3차원 영상 분석법 DLT 방식을 이용해 분석한 결과 다음과 같은 결론을 얻었다. 전체 11.926초가 소요되었고, 오른발 동작의 보폭은 51.4㎝로 나타났다. 오른발이 이지된 후 오른무릎의 높이 는 70.5㎝로서 가장 높았으며, 이 때 신체 중심고도 85.1㎝로서 가장 높았다. 21.3˚ 의 최대의 상체 전경이 이루어진 후 오른발이 이지되고, 그 후에 106.6˚ 의 최대 오른무릎 굴곡이 이루어졌으며, 오른발이 착지된 직후부터 약 80˚ 정도의 최대 전신 회전이 이루어졌다. This Study was conducted to present the quantitative data in order to investigate the kinematical characteristics of Mureupdipimu in Choyong dance. To accomplish the objective of this study, kinematical variables were set up with spent time, stride, height of knee and c.g., body lean, body rotation. The Subjet was one male who is instructing the Choyong dance learner at the National Institution of Traditional Music, and the motions were analyzed using the DLT(Direct Linear Transformation) method of three-dimensional cinematography. the conclusions were as follows; The whole spent time is showed 11.926sec and the stride of right foot is revealed 51.4㎝. After the right foot take-off, the maximum height of c.g. and right knee come about in 85.1㎝ and 70.5㎝ As to the angles, it is accomplished before the right foot take-off that the maximum right knee flexion of 106.6˚ go ahead of the maximum body lean of 21.3˚ . And the maximum body rotation of 80˚ come about after the right foot touch-down. Therefore, it might be assumed that Mureupdipimu expresses first period, intermediate period and last period to be active, mid-active and mild.

도마 츠카하라 몸 접어 뒤로 두 번 돌기의 운동역학적 분석

임규찬 한국운동역학회 2004 한국운동역학회지 Vol.14 No.3

K. C. LIM. Biomechanical Analysis of Tsukahara Vault with Double Salto Backward Piked. Korean Journal of Sport Biomechanics, Vol. 14, No. 3, pp. 135-147, 2004. This study was conducted to investigate the technical factors of Lu Yu Fu vault actually performed by three men gymnasts participated in artistic gymnastics competition of 2003 summer Universiade in Daegu through the DLT method of three dimensional cinematography. To analyze these vaults, the instant events of Lu Yu Fu were set in the board touchdown(BTD), the board takeoff(BTO), the horse touchdown(HTD), the horse takeoff(HTO), the peak height(PH), the mat touchdown(MTD) respectively and the phases of that vault were set in the board contact(BC), the preflight(PRF), the horse contact(HC), the postflight(POF), the grounding on mat(GM) respectively. After calculating the performance times, the CG displacement·velocity, the kinetic energy·impulse reaction force·moment arm·torque at the horse, the released angle·piked angle·addressed angle, the angular momentum·angular velocity of whole body in x axis, and the horizontal displacement between the feet and CG, the following conclusions were reached. To perform the better Lu Yu Fu vault, a gymnast must have the large horizontal velocity of whole body with fast run-up, decrease the duration time and the horizontal·vertical displacement of whole body in PRF, have the enough time to judge the correct magnitude and direction of force to brake or push the horse so as to lengthen the HC duration time at any cost. Also it is desirable to increase the horizontal·vertical displacement of whole body in POF if possible, maintain the adequate piked position to decrease the angular velocity of whole body in x axis, prepare the grounding on mat previously and delay the release of the hand from the body to keep the angular momentum.

핸드볼 페날티 드로우시 표적에 따른 상지 분절의 역할

임규찬 한국운동역학회 2001 한국운동역학회지 Vol.11 No.1

This study was conducted to investigate the differences in the instantaneous contributions of anatomical rotations of trunk, upper arm, forearm, and hand to ball speed according to the targets based on the upper right corner, lower right corner, upper left corner, and lower left corner of handball goal post respectively and to quantify the three-dimensional angular kinematics of the trunk and throwing arm during handball penalty throws motion by eight male subjects. The penalty throws were filmed using two video cameras, and data were collected through the DLT method of three dimensional cinematography. The data were verified using one-way ANOVA at level of significance .05 whether there were significant differences in the contributions ratios and angular kinematic data among the four targets. In general, The largest contributors to predicted ball speed |(v_B)'| at release were a counterclockwise twisting rotation of the trunk and a linear velocity of the ball relative to the right knuckle perpendicular to the plane of the hand. There were significant differences in the only x · y · z components of the linear velocity of the ball relative to the right knuckle among the four targets in the contributors to predicted ball speed at release. There were significant differences in the maximum clockwise twisting rotation angle of the trunk and the maximum extension angular velocity of the forearm in the address motion. There significant differences in the front somersaulting angle of the trunk and the counterclockwise twisting rotation angle of the trunk at release.

백화사설초 추출물의 항종양 성분에 관한 연구

임웅규,권규찬 서울大學校 農業生命科學大學 農業開發硏究所 1996 서울대농학연구지 Vol.21 No.1

럭비 펀트킥의 하지 동작에 관한 연구

임규찬 師範大學 體育硏究所 1993 서울大學校 體育硏究所論集 Vol.14 No.2

The purpose of this study was to compare the kinematic variables of the skilled and the unskilled group during the punt kick in rugby. The kinematic variables that were related to the movement of the lower limb were a) the phase time, b) the speed of the foot, c) the contribution ratio of the each segment to the speed of the foot, d) the relationship among the hip joint, the knee joint and the ankle joint, e) the angular displacement and the angular velocity of the hip joint and the knee joint. For analyzing these variables three events were established; take off, end of loading and impact. Each subject was filmed with three-dimensional cinematography, and after the film analysis procedure using the Direct Linear Transformation method, the above variables were obtained. The following conclusions were reached: 1. As the leading phase time of the skilled group was inclined to be longer than that of the unskilled group, the time for the hip joint to accelerate was inclined to be sustained and the speed of the foot was inclined to be increased in the skilled group. 2. While it was inclined for the order of the contribution ratio of the each segment to the speed of the foot to be the hip joint, the trunk, the knee joint, the trunk rotation at the instant of the end of the loading in the skilled group, it was inclined for that to be the knee joint, the hip joint, the trunk at the instant of the impact. 3. For the effective impact it was assumed to be three fold; 1) the ankle joint should be performed to rotate, 2) the hip joint be performed to decelerate in the adduction and horizontal adduction position and accelerate in the extension position, 3) the knee joint be performed to accelerate in the extension position.

하지 절단자 보행의 운동역학적 분석

임규찬,박윤서,배성제,정철수,신인식,김복영 師範大學 體育硏究所 1994 서울大學校 體育硏究所論集 Vol.15 No.2

This study was conducted to investigate the biomechanical characteristics of the gait pattern in an amputee for the purpose of improving the proper gait posture and designing the prosthetic. The subjects were six males amputees and one normal person. The ground reaction force was measured using AMTI force platform. The conclusions were as follows; 1. In case of amputee group, the ground reaction force was revealed in specific figure according to position in which they used the prosthetic, whereas in case of normal person the ground reaction force was revealed in the figure of two humps in regard of vertical axis. 2. In case of amputee group, the ground reaction force in time between fight foot contact and left foot contact was deviated from a figure of rectangle, whereas in case of normal person the ground reaction force was revealed in the figure of rectangle. 3. In case of amputee group, the ground reaction force referred to both feet angle point of view was revealed in irregular figure, whereas in case of normal person the ground reaction force was revealed about 47。

테니스 포핸드 스트로크의 포워드 스윙에서 multisegment 스윙과 single unit 스윙의 라켓 속도에 대한 기여도 비교에 관한 연구

임규찬,정철수 師範大學 體育硏究所 1993 서울大學校 體育硏究所論集 Vol.14 No.2

The purpose of this study was to compare the contribution to the speed of the racket of multisegment and single unit forehand stroke during forward swing in tennis. Each one skilled subject was filmed with three-dimensional cinematography, and after the film analysis procedure using the Direct Linear Transformation method, the factors contributing to the speed of the racket in each subject were obtained. The following conclusions were reached: 1. The typical difference of the preimpact speed of the racket between the multisegment swing and the single unit swing was not found, but each swing pattern was inclined to be different. 2. Concretely, the shoulder and elbow joint dominated the multisegment initial swing pattern, and the trunk rotation and elbow joint dominated the multisegment final swing pattern. Especially, the somersault component of the upperarm rotation dominated the upperarm initial swing pattern, and the twist component dominated the upperarm final swing pattern. 3. The shoulder and elbow joint dominated the single unit initial swing pattern, and during the intermediate phase the trunk rotation and elbow joint dominated the single unit swing pattern, finally the shoulder joint and the trunk rotation and the elbow joint dominated the single unit final swing pattern. Especially, the twist component of the upperarm rotation dominated the upperarm initial swing pattern, and the somersault component dominated the upperarm final swing pattern.

110m 허들의 구간별 운동학적 변인 분석

임규찬,정철수,이만기 師範大學 體育硏究所 1994 서울大學校 體育硏究所論集 Vol.15 No.2

This study was conducted to investigate the biomechanical characteristics of the interval running motions in elite hurdlers for the purpose of improving horizontal velocity. Here, interval running was divided into preparatory phase, hurdle phase, landing phase, and recovery phase in turn. The subjects were six males who were included in one current Korean national player. The interval running motions were filmed using four 16mm cameras. The motions were analyzed using the DLT (Direct Linear Transformation) method of three-dimensional cinematography. The conclusions were as follows; 1. In order to maintain the horizontal velocity, specially the spent time of hurdle phase should be decreased. 2. In order to maintain the horizontal velocity, the body c.o.g should be raised specially at the touch-down of hurdle phase and landing phase. 3. In order to maintain the horizontal velocity, specially the step length of landing phase and recovery phase should be increased. 4. In order to maintain the horizontal velocity, the active landing style should be performed as the sole of foot might claw the ground. 5. In other to delay the generation of the vertical velocity, knee flexion should be maintained until trail leg comes to the recovery phase. 6. In order to perform the hurdling motion efficiently, an optimal take-off angle should be kept up, and the body lean angles should be increased forward. 7. In order to decrease the airborne time, abduction and internal rotation of hip joint should be completed immediately before the clearance, and horizontal adduction should be advanced quickly immediately after the clearance.