• 한국엔터테인먼트산업학회논문지
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• 제15권6호
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• pp.153-163
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• 2021

본 연구의 목적은 고등학교 지도자의 멘토링시스템을 활용한 성취목표성향, 스포츠 자신감 및 인지된 경기력의 구조적 관계를 분석하여 향후 한국 태권도의 발전과 교육의 질을 높이는 데 기초자료로 제공하고자 한다. 이를 위해 2020년 대한태권도협회에 등록된 선수 중 제31회 문화체육관광부장관기 전국 남·여 태권도대회에 참가자 465명의 고등학생을 조사한 후 이용하였으며, 연구 목적에 따라서 통계 분석 SPSS, AMOS 24.0 통계 프로그램을 활용하여 분석하였다. 이에 따른 연구 결과는 다음과 같다. 첫째, 태권도 지도자의 멘토링은 성취목표성향에 영향을 미치는 것으로 나타났다. 둘째, 태권도 지도자의 멘토링은 스포츠 자신감에 영향을 미치는 것으로 나타났다. 셋째, 태권도 지도자의 성취목표성향은 인지된 경기력에 영향을 미치는 것으로 나타났다. 넷째, 스포츠 자신감은 인지된 경기력에 영향을 미치는 것으로 나타났다. 위의 연구결과를 보면 태권도 지도자의 멘토링에 따른 성취목표성향, 스포츠 자신감 및 인지된 경기력에 중요한 역할과 경기력 향상에 기여한다 할 수 있으며 아울러, 태권도의 특성상 각 변인을 다양한 연구방법을 활용되어야 하고 질적 연구를 통한 심층적인 연구가 필요하다고 생각된다.

• 한국운동역학회지
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• 제15권2호
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• pp.167-183
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• 2005

The purpose of this study was to analyze the kinetical variables of the lower extremity joints when performing uchimata(inner thigh reaping throw) by uke(receiver)'s two posture(shizenhon tai), jigohon tai), by voluntary resistance level(VRL) in judo. The subjects, who were for 3 male Korean national representative judokas(elite group : EG) and 3 male representative judokas of Korean University(non-elite group: NEG), and were filmed 4 DV video cameras(60fields/sec.), that posture of uke were shizenhon-tai (straight natural posture), jigohon-tai(straight defensive posture), VRL of uke was 0%. The selected trials were subject to 3-dimensional film motion analysis and ground reaction force(MRF) analysis. The kinetical variable of this study were temporal, postures( ankle and knee angle of attacking leg), that were computed through video film analysis, MRF at events were obtained from the ground-reaction force analysis by AMTI force plate system. When performing uchi-mata according to each posture and by VRL, from the data analysis and discussion, the conclusions were as follows : 1) Temporal variables : total time-required(TR) when performing uchi-mata was shown EG 0.13sec the shorter than NEG(o.77sec.) in shizenhon-tai. and EG 0.17sec the shorter than NEG(o.76sec.) in jigonhon-tai. Also, all of two groups' jigohon-tai(0.68sec.) were faster than shizenhon-tai(0.71 sec.). 2) The posture variables : The angle of ankle in attacking when performing were plantar flexion in EG, and dorsi flexion in NEG by shizenhon-tai and jigohon-tai posture. The angle of knee in attacking when performing were extension in EG and NEG, but range of extension in EG were larger than in NEG. 3) MRF : Vertical MRF when performing uchi-mata was shown the strongest in the 2nd stage of kake phase(2.23BW) by EG in both posture, and it was same value by NEG(2.23BW), but shizenhon-tai (2.28BW), jigohon-tai(1.64BW), respectively.

• 한국융합학회논문지
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• 제10권12호
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• pp.387-397
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• 2019

본 연구의 목적은 노인의 건강체력, 우울 및 삶의 질 변인 간의 통합적 인과성을 규명하고자 한다. 자료 수집은 서울·경기 소재의 노인복지관과 노인정에서 동의를 얻은 자발적 참여자 385명을 대상으로 인구통계학적 특성과 인지기능, 삶의 질 및 우울의 설문지와 하체·상체 근력, 동적평형성 및 민첩성, 악력과 전신지구력을 측정하여 자료를 수집하였다. 이에 일련의 절차를 걸쳐 도출된 연구결과는 다음과 같다. 첫째, 노인의 인지기능과 건강체력, 우울 및 삶의 질 간에는 통계적으로 유의한 상관관계가 나타났다. 둘째, 노인의 인지기능과 건강체력, 삶의 질 및 우울의 통합적 관계성에 대한 결과 모든 변인 간에 통계적으로 유의성이 나타났다. 셋째, 노인의 건강 체력이 삶의 질과 우울에 미치는 영향에서는 인지기능의 부분 매개효과가 나타났다.

• 한국운동역학회지
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• 제25권3호
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• pp.323-333
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• 2015

Objective : The purpose of this study was to investigate the changes of gait patterns and muscle activations with increased loads during stair walking. Also, it can be used as descriptive data about continuous stair walking in a real life setting. Method : Twelve sedentary young male adults(Age: $27.0{\pm}1.8yrs$, Weight: $65.8{\pm}9.9kg$) without any lower extremity injuries participated in this study. Participants performed stair walking up 7 floors and their ascending and descending motion on each floor was analyzed. A wireless electromyography(EMG) were attached on the Rectus Femoris(RF), Biceps Femoris(BF), Gastrocnemius(GN), Tibialis Anterior(TA) muscle to calculate integrated EMG(iEMG), median frequency(MDF) and co-contraction index(CI). Chest and left heel accelerometer signal were recorded by wireless accelerometer and those were used to calculate approximate entropy(ApEn) for analyzing gait pattern. All analyses were performed with SPSS 21.0 and for repeated measured ANOVA and Post-hoc was LSD. Results : During ascending stairs, there were a statistically significant difference in Walking time between 1-2nd and other floors(p=.000), GN iEMG between 2-3th and 6-7th(p=.043) floor, TA MDF between 1-2nd and 5-6th(p=.030), 6-7th(p=.015) floor and TA/GN CI between 2-3th and 6-7th(p=.038) floor and ApEn between 1-2nd and 6-7th(x: p=.003, y: p=.005, z: p=.006) floor. During descending stairs, there were a statistically significant difference in TA iEMG between the 6-5th and 3-2nd(p=.026) floor, and for the ApEn between the 1-2nd and 6-7th(x: p=.037, y: p=.000, z: p=.000) floor. Conclusion : Subjects showed more regular pattern and muscle activation response caused by regularity during ascending stairs. Regularity during the first part of stair-descending could be a sign of adaptation; however, complexity during the second part could be a strategy to decrease the impact.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2010-2014
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• 2005

Object detection and parameter estimation in point cloud data is a relevant subject to robotics, reverse engineering, computer vision, and sport mechanics. In this paper a software is presented for fully-automatic object detection and parameter estimation in unordered, incomplete and error-contaminated point cloud with a large number of data points. The software consists of three algorithmic modules each for object identification, point segmentation, and model fitting. The newly developed algorithms for orthogonal distance fitting (ODF) play a fundamental role in each of the three modules. The ODF algorithms estimate the model parameters by minimizing the square sum of the shortest distances between the model feature and the measurement points. Curvature analysis of the local quadric surfaces fitted to small patches of point cloud provides the necessary seed information for automatic model selection, point segmentation, and model fitting. The performance of the software on a variety of point cloud data will be demonstrated live.

• 한국운동역학회지
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• 제15권2호
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• pp.41-55
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• 2005

In this study, weight carrying pattern analysis and comparison method of four foot region were suggested. We used three types of club(driver, iron7, pitching wedge). This analysis method can compare between top class golfer and beginner. And the comparison data can be used to correct the swing pose of trainee. If motion analysis system, which can measure the swing speed and instantaneous acceleration at the point of hitting a ball, is combined with this plantar foot force analysis method, new design development of golf shoes to increase comfort and ball flight distance will be available. 1. Regional change of force acting, in address, is evenly distributed on both feet. In back swing top, 76% on right foot, 75% on left foot as impact, and 86% on left foot as finish. As regional force acting, in address, pros get high marks on rare and inside of right foot and rare and outside for amateurs. In back swing top, it is higher as fore and inside of left foot, pros as rare part of right foot and amateurs as forefoot. In impact, it is higher for pros and amateurs in outside and rare part of left foot and fore and inside of right foot. In finish, for both pros and amateurs, it is higher for outside and rare parts of left foot. 2. For each club, forces are evenly distributed on both feet in address. In back swing top, the shorter a club is, the higher impact on right foot and the higher finish distribution on left foot. For all the clubs used, in each region, pros get higher on rare and inside of right foot and as amateurs on rare and outside of left foot in address. In back swing top, for all clubs, pros get higher on rare and outside of right foot as fore and outside for amateurs. In impact acting, for all clubs, rare and outside of left foot get higher. In finish, force concentrates on rarefoot. 3. On both feet force, right foot forces of amateurs is higher than those of pros in back swing top. In impact and finish, pros get higher on left foot.

• 한국운동역학회지
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• 제13권3호
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• pp.265-276
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• 2003

The objective of this research is to provide basic data for improving athletic performances, suggesting methods that can be utilized at games and coaching movements in the snatch, by analyzing the level of contribution of muscles to the movements of the snatch lift through three-dimensional imaging and EMG analysis between skilled and unskilled lifters. To this end, three high school students (the skilled group), three middle school student (the unskilled group) were selected; two digital video cameras and electromyography were used. The muscles measured by an EMG include gastrocnemius muscle, biceps femoris muscle, erector spinae, latissimus dorsi muscle, trapezius muscle, and brachioradialis. Based on the Ariel Performance Analysis System (APAS) program, the results of the analysis are summarized as follows. 1. In performing snatch pulls, the skilled lifters were found to simultaneously move the weight centers of the body and the barbell close to vertical, close to the shoulders in the pulling portion; in snatching and grabbing the barbell from a sited position, it was observed that the shorter the time for adjusting to change in the height of the barbell by using rotational inertia, the better it is to perform the movements. 2. The skilled lifters were observed to perform stable and efficient movements in grabbing the bar in a sited position, by moving the barbell and weight center of the body close to vertical and moving the shoulder joint under the bar fast. 3. The results of the EMG analysis of the entire movements from the snatching portion to the portion of grabbing the bar in a sited position show that when the skilled lifters lifted the barbell vertically during the pulling portion, their shoulder joints were extended to put more weight on biceps femoris muscle and brachioradialis; and in snatching and grabbing the bar from a sited position, it was found desirable to increase the myoelectrical activity of erector spinae in order to achieve a balance in the movements of the hip joint between font and rear, as the weight centers of the body and the barbell move higher. On the other hand, the unskilled lifters were found that in response to change in posture, they increase their muscular strength inefficiently in performing the movements throughout the entire lifting process.

• 한국융합학회논문지
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• 제7권5호
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• pp.247-254
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• 2016

이 연구의 목적은 생활체육 참여정도가 지체장애인의 객체화된 신체의식에 어떠한 영향을 미치는지를 규명하는데 있다. 연구대상은 A시에 거주하면서 생활체육에 참여하고 있는 지체장애인들 221명을 대상으로 하였다. 자료처리는 SPSS 21.0 프로그램을 이용하여 빈도분석, 요인분석을 실시하였으며, 구체적인 요인에 대한 분석은 독립 t검증과 일원변량분석 및 중다회귀분석을 실시하였다. 모든 통계적 유의 수준은 .05로 설정하였다. 연구결론으로는 첫째, 지체장애인의 인구사회학적 특성에 따른 성별(남성), 연령별(40대, 50대), 장애등급별(4급)에 따른 객체화된 신체의식 수준에는 긍정적인 효과가 있는 것으로 나타났다. 둘째, 지체장애인의 생활체육 참여정도(운동기간, 운동시간, 운동강도)는 객체화된 신체의식의 신체 수치심에 긍정적인 효과가 있으며, 신체 감시성에서는 운동기간, 신체수치심에서는 운동강도, 통제신념에서는 운동시간이 각각 긍정적인 영향을 미치는 것으로 나타났다.

• 한국항해항만학회지
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• 제38권2호
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• pp.111-120
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• 2014

본 연구의 목적은 카누 지도자의 변혁적 리더십이 지도자의 신뢰에 미치는 영향과 지도자의 신뢰가 조직몰입에 미치는 영향을 검증하는 데 있다. 이를 위해 대한카누협회에 등록된 중 고 대 일반부 남 여 선수 총 350명을 무선 표집법을 이용해 추출해 설문지를 배분하고, 이 중 불성실한 응답 26명의 자료를 제외한 총 324명의 설문지를 유효 표본으로 했다. 연구결과를 위한 분석방법으로 빈도 분석, 신뢰도 분석, 요인 분석, 상관 분석, 다중회귀 분석을 실시하여 다음과 같은 결론이 도출되었다. 첫째, 변혁적 리더십은 행동적 신뢰, 감성적 신뢰, 인지적 신뢰에 영향을 미치는 것으로 나타났다. 둘째, 변혁적 리더십은 정서적 몰입, 계속적 몰입, 규범적 몰입에 유의한 영향을 미치는 것으로 나타났다. 셋째, 신뢰는 정서적 몰입, 계속적 몰입, 규범적 몰입에 유의한 영향을 미치는 것으로 나타났다.

• 한국운동역학회지
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• 제27권4호
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• pp.279-285
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• 2017

Objective: The purpose of this study was to perform a muscle function path analysis of muscle function on myofascial meridians. Method: Seven male students (mean age: $22{\pm}3.46years$; mean mass: $72.71{\pm}8.19kg$; mean height: $174{\pm}4.39cm$) without a history of musculoskeletal system symptoms or injuries were recruited for this study. The measurement muscle of the myofascial line was selected along with the muscle presented in "anatomy trains (Thomas W. Myers. 2014)", and the attachment of the surface EMG (Telemyo 2400T G2, USA) pad was determined according to "EMG analysis (Kim Tae Wan et al., 2013)". The subjects underwent maximum volumetric contraction of their fascia line end muscles three times in lying and standing postures and were subjected to the maximum number of contractions of the myofascial line muscle three times in the lying and standing postures. The sampling rate of the EMG signal was set to 1,000 Hz, and the bandwidth was 20 to 350 Hz. The activity of each muscle was quantitated using the Pearson correlation coefficient, and SPSS 22.0 was used for data analysis. Results: In myofascial meridians, a positive correlation in the myofascial connection and a negative correlation in the mechanical connection were observed. Conclusion: Muscles that show significant contract correlations with one another may be expected to be used as an effective clinical marker in muscle strengthening or relaxation therapy, and rehabilitative training. In this study, the correlation of total myofascial meridians may differ without consideration of functional posture. Future studies need to consider these points.