• Economic and Environmental Geology
• /
• v.52 no.3
• /
• pp.231-241
• /
• 2019

Kinematic analysis determines the stability of rock slope by analyzing the relationship between the slope face orientation and the discontinuity orientation. In this study, terrestrial LiDAR was used to obtain a large amount of discontinuity orientation data and then, the probabilistic characteristics of the orientation data obtained using terrestrial LiDAR were analyzed. Subsequently, the probabilistic kinematic analysis was carried out using the discontinuity orientations generated randomly from Fisher function in Monte Carlo simulation. In addition, the probabilistic kinematic analysis was also performed using the actual orientation data obtained from the terrestrial LiDAR to compare their results. Consequently, the results of both probabilistic analyses showed similar results. Therefore, if sufficient orientation data are provided by other means such as terrestrial LiDAR, the probabilistic analysis will show reasonable results using the actual field data without randomly generating orientation data. In addition, the deterministic kinematic analysis was also carried out using representative orientation of discontinuity sets. The analysis result of the probabilistic analysis showed similar results with the deterministic analysis because the dispersion of the discontinuity orientations in a joint set is not large.

• Korean Journal of Applied Biomechanics
• /
• v.18 no.3
• /
• pp.11-21
• /
• 2008

The purpose of this study was to investigate the most optimum way of performing the bandal chagi during Taekwondo Kyorugi competition. By analyzing the EMG data and the kinematic data it was hoped that scientific data would be provided to instructors and players about the optimization of the Bandal Chagi. The results of the analysis are as follows: During competition while performing the Bandal Chagi the most important factors that affect the impact point are the range of motions of the upper body hyper extension and knee joints. Through the measurement of the muscles EMG activity of a well performed Bandal Chagi with the right leg it was observed that the left side erector spinae muscle was highly activated and so it was concluded that this muscle should be trained to improve the performance of the Bandal Chagi. Likewise it was observed that for the right side of the abdominal muscle's EMG there was a high activity level and thus showed that there was a large contribution of this muscle for the optimum performance of the Bandal Chagi.

• Physical Therapy Korea
• /
• v.9 no.4
• /
• pp.13-35
• /
• 2002

Lesch-Nyhan 증후근(LNS)은 hypoxanthine guanine phosphoribosyle transferase(HGPRT) 효소를 암호화 하는 X 염색체가 불완전해서 일어나는 유전적인 추제외로계(또는 기저핵)의 드문 병변이다. 출생시 LNS 유아는 정상적인 운동발달이 관찰되어진다. LNS에게서 현저하게 진단적인 특징으로 보여지는 운동심리적 행동인 self-mutilating 행위는 4살 이후에나 나타난다. LNS 아이들은 오히려 초기에 Rett's 증후근, 뇌성마비, 자폐, 다운증후근과 유사한 운동행위를 보인다. 그래서 LNS 아이들은 앞에 기술한 신경학적 장애로 오진을 받을 수가 있다. 오진으로 인해 초기에 적절한 치료를 받지 못한다면 LNS는 결과적으로 합병증(신장부전)과 self-mutilating 행위로 인하여 치명적일 수가 있다. 그러므로, 이 연구의 목적은 LNS 평가 동안 더 나은 진단을 하도록 하기 위하여 LNS와 관련된 기능부전에 대한 지식을 임상가들에게 제공하고자 함이었다. 연구 대상자는 10살인 2명의 쌍둥이 남아이었으며 실험은 뻗기 과제 수행(reaching task)시 움직임 특성을 보기 위하여 운동형상학적과 비디오 분석을 사용하였다. 기술통계로 분석 결과 움직임 시간과 단위가 증가됨을 보였고 사지의 분절적 움직임이 협응되지 않음을 보였다. ballistic과 jerky 움직임 양상은 dysmetric과 비긴장성 운동 행위에서 우세하였다. LNS은 추체로계 운동 장애 (과근긴장도나 저긴장도) 와 추체외로계의 운동 장애(dystonia와 choreoathetosis)의 혼합된 형태를 보였다. 결론으로 이 연구는 운동발달 장애를 가진 아이들을 치료하고자 할 때 임상가들한테 LNS 아이들의 움직임 장애의 다른 진단적 특징을 알아야 한다는 것을 제시하고자 한다.

• Proceedings of the KSLP Conference
• /
• 2003.11a
• /
• pp.234-235
• /
• 2003

목적 : 본 연구의 목적은 기질적 조음장애 중 운동구어장애자의 유형에 따른 음운변동 패턴을 연구하여 각 집단만의 신경학적 손상으로 인한 조음운동 패턴을 분석하고자 하는데 있다. 운동구어장애자의 조음 오류에 대해서 SDO(substitution, distortion, omission) 분석적 접근을 하는 것이 일반적이며 따라서 음운변동 분석을 함으로써 이들의 오류패턴의 유형을 찾고, 언어중재 시에 이들의 조음기관 관련 근운동의 훈련을 보다 체계적으로 실시할 수 있을 것이라고 본다. (중략)

• Journal of Digital Convergence
• /
• v.17 no.7
• /
• pp.109-114
• /
• 2019

The purpose of this study is to analyze the phenomenon studies related to athletic continuity and school life satisfaction of the intellectually disabled students. According to the analysis, the integrated sports volleyball program has acquired athletic skills in the satisfaction of school life and maintained close friendship through cooperation. The participants of intellectually disabled students have been more flexible with the improvement of the physical education volleyball program, and they are affiliated with the school's cooperation, through a cooperative study. Therefore, through the integrated sports volleyball program, students with disabilities can overcome limitations and dissatisfaction with the athletic continuity and satisfaction of school life and achieve the integration they seek in the integrated education.

• Korean Journal of Applied Biomechanics
• /
• v.19 no.3
• /
• pp.425-433
• /
• 2009

The purpose of this study was to investigate relation between fastball motion and longtoss motion, and the kinematical analysis using APAS(Ariel Performance Analysis System). Eight people(age: $21.2{\pm}3.6years$, height: $177.1{\pm}3.1cm$, weight $68.6{\pm}2.5kg$) participated in the experiment. Followings are the conclusion. In displacement of fore-aft on COG(Center of Gravity), fastball motion moved more forward than longtoss motion. In displacement of vertical on COG(Center of Gravity), fastball motion was lower than longtoss motion In velocity of right hand, greater release velocity was measured for fastball motion than for longtoss motion. In displacement of elbow and shoulder joint, more extended displacement was exhibited in fastball motion than longtoss motion. In displacement of trunk tilt, fastball motion showed foreward tilt, longtoss motion showed backward tilt. In stride, fastball showed longer than longtoss.

• Korean Journal of Applied Biomechanics
• /
• v.19 no.4
• /
• pp.729-738
• /
• 2009

The purpose of this study was to analyze the impact accuracy and kinematic parameters of skill level and eye-tracking type during putting strokes. For comparison, five elite golfers and five novice golfers participated in this study. Three-dimensional kinematic data were collected for each subject while 10 putting trials were performed for each skill level and eye-tracking type. The APAS system was used to compute the impact accuracy and kinematic parameters of putter heads. The putting stroke was divided into three phases: back swing, downswing, and follow-through. The findings indicated that significant differences were found in skill level as it affected the rate of success. For impact accuracy and the displacement of putter heads, a significant difference was found for the skill level, particularly in backs-wing and follow-through. In addition, the displacement of the putter head had a greater influence on stroke accuracy than on velocity.

• Journal of Life Science
• /
• v.21 no.9
• /
• pp.1336-1345
• /
• 2011

The purpose of this study was to analyze and compare the effects of exercise science of shoes for Aged' health promotion. Kinematic and kinetic data were collected using cinematography and the Zebris system (Zebris Emed Sensor Platform, GR-DVL9800) to analyze pressure of foot and ground reaction force. Subjects recruited were 20 healthy elderly men. They walked at 1.36m/sec velocity wearing type A (domestic), type B (foreign) and walking shoes (A company). One-way ANOVA was used to analyze statistics. The results were as following: no significant differences were observed in gait variables among the three groups (p<0.05). There was a significant difference in max pronation angle of heels examined among the three groups (p<0.05). There were no significant differences in kinetic variables (ground reaction force and max pressure) among the three groups (p<0.05). A physiology study was performed to analyze the effects of walking with shoes with silver added to them on percent body fat, resting metabolic rate and energy expenditure. Sixty adults males were recruited from the public health center. They were divided into four groups. C: control group (n=20), EY: elderly Y group (n=20), and EO: elderly O group (n=20). The results of this study were as follows: percent body fat was decreased following each exercise period, however, not all the groups showed a significant difference. The change of resting metabolic rate was significantly increased in HI (high intensity) and LI (low intensity) periods in the C and EY groups. However, there was no significant difference in the EO group. The mean energy expenditure during and after exercise were significantly lowered in all periods compared to the control group.

• Journal of the Korean Society for Railway
• /
• v.12 no.6
• /
• pp.989-995
• /
• 2009

Short-time Fourier transforms (STFT) are useful for analyzing signals with harmonics that vary with time. If the variation of the harmonics with time is smooth, such as in kinematic vibrations in vehicles, then it is possible to improve the STFT using order spectra and correlation analysis. In this paper, it is shown how correlation analysis can be performed when the speed signal is noisy or unknown and then it is shown how order spectra become simple to compute after this analysis. The results are illustrated by an analysis of axle and car body vibrations in the prototype high-speed train, HSR-350x.

• Physical Therapy Korea
• /
• v.6 no.4
• /
• pp.36-42
• /
• 1999

본 연구의 목적은 운동제어/학습 또는 운동역학을 연구하는데 중요한 역할을 하는 근전도의 사용과 근전도와 등척성 수축력과의 관계에 나타나는 문제점과 제안점을 조사하는 것이다. 선행연구를 분석한 결과, 등척성 힘의 증가에 따른 근전도의 증가 관계가 선형적 모양으로 나타나지는 않았다. 또한, 선행연구에서 근전도와 등척성 힘 관계를 연구하는데 몇 가지 문제점들이 발견되었다. 이러한 문제점은 선행 연구실험들의 절차상에 차이가 나타났고, 근육의 생리학적인 또는 해부학적인 성질에서 문제점이 논의되었다. 결론적으로, 이러한 문제점들이 해결되지 않는 한 근전도와 등척성 수축력과의 관계는 불분명하게 남아있을 것이다.