• 한국운동역학회지
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• 제32권2호
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• pp.43-48
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• 2022

Objective: The purpose of this study was to verify the effectiveness among simulating ski jumping trainings by comparing with actual ski jump. Method: Three healthy youth national athletes were recruited for this study (age: 13.70 ± 0.9 yrs, height: 169.30 ± 0.9 cm, jumping caree: 5.3 ± 0.9 yrs). Participants were asked to performed ski jumping with 3 simulating and one actual situation. A 3-dimensional motion analysis with 5 channels of EMG was performed in this study. Muscle activations of Rectus Femoris [RF], Tibialis Anterior [TA], Thoracis [TH], Gluteus maximus [GM], and Gastronemius [GL] were achieved with sampling rate of 2,000 Hz during each jump. Results: In the case of S1 in the actual jumping motion, the deviation of the muscle activity peak did not appear each trial, and the jump timing was consistent. For S2, the timing of the muscles peak activation which can maintain the posture of the upper body and ankles appeared at the beginning. In the case of S3, the part maintaining the ankle posture at the beginning appeared, but it could be expected that it would progress in the vertical direction due to the activation of GL at the time of jumping. Conclusion: The muscle activation peak before the take-off point showed a different pattern for each athlete, and individual differences were large. In addition, it was attempted to confirm the actual jump with simulation jump, and it was found that not only the difference in patterns but also the fluctuations in the timing of each muscle activation peak were large.

• 한국의류학회지
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• 제21권3호
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• pp.581-588
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• 1997

Since 1950 postmodernism shows strong influences in literature, architektuTe, art, clothing and other social and cultural fields. It's main conceptswere individual, pluralistic, unconven- tional and deconstruction of social values. The purpose of thisstudy was to review the influence of postmodernism to German clothing for youth. To achieve this purpose, raga- zinesfor youth ("BKAVO") from 1959 to 1994 surveyed including a number of interviews. The characterizations of postmodernism in fashion are as follows: Sport Clothing has an effect on Oaily Clothing. Exotic phenomenon from south america, africa, asia shows strong in fashion. Subculture(Rocker, Hippie, Punker) is as anti-culture sylnbolically expressed in young fashion which is diffrent from mother-fashion. This appeard in Germany in the 50s, 60san6 70s. However, sub-culture-look in the 80s and 90s is presented only in outer style. It does'nt show any symbolic meanings. "Bricolage" ("mix and match") -concept was appeard in 60s and 70s only in fashion of subculture group. This concept generalized in standard fashion in 80s and 90s.andard fashion in 80s and 90s.

• 한국운동역학회지
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• 제29권3호
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• pp.137-143
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• 2019

Objective: Ligament laxity and hypotonia are characteristics of Down syndrome patients. The aim of this study was to compare the landing pattern between Down syndrome patients and typically developing subjects. To compare the landing pattern, variables related to ligament laxity and hypotonia i.e. vertical stiffness and lower extremities kinematics were investigated. Method: Five subjects with Down syndrome (age: $14.6{\pm}1.8years$, mass: $47.6{\pm}6.94kg$, height: $147.9{\pm}6.0cm$) and six able-bodied subjects (age: $13.2{\pm}0.4years$, mass: $54.7{\pm}6.7kg$, height: $160.1{\pm}9.8cm$) participated in this study. Results: The vertical displacement of the center of mass, vertical reaction force, leg stiffness and range of ankle angle range among Down syndrome patients were significantly different than typically developing group. The youth with Down's syndrome appeared to receive greater vertical impact force at landing than normal youth. Conclusion: The differences in the biomechanical characteristics suggest the delay in motor development among Down syndrome patients and an increased risk of injury to the lower extremity during movement execution such as drop landing.

• 연구윤리
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• 제3권2호
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• pp.7-11
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• 2022

Purpose: For several decades, there has been a variety of publications on refugee and enforced immigration studies, with the rising corpus of studies on obligatory displacement and sport reflecting relatively recent emphasis over the last decade. However, prior studies do not suggest and summarize regarding ethical perspectives in terms of participatory behavior of refugee youth in sports and leisure field. Research design, data and methodology: Unlike quantitative research method which tries to quantify the association between variables, the qualitative research design that was selected by the current study as a main methodology attempts to take a look at the current and past literature contents closely so that obtained datasets may be explanatory and abundant. Results: After thorough analysis, it was evident that in all research where ethical perspectives were utilized, there was increased participation in sports and leisure activities by the refugee youths, and it may be divided into three categories: culturally sensitive, contextual, and reflective ethics. Conclusions: The current research concludes that ethical perspectives are required to research refugee youth's participatory behavior in sports and leisure and many more ethical factors are aspired to, and they must be thoroughly evaluated before, throughout, and following the study.

• 문화기술의 융합
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• 제7권1호
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• pp.364-368
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• 2021

본 연구는 대한민국 청소년 배드민턴 국가대표 선수를 대상으로 그들의 경기력과 성취목표성향의 하위 요인인 자아성향과 과제성향에 어떤 관계가 있는지 알아보고자 수행되었다. 이에 배드민턴 청소년 대표 선수들의 경기력 수준에 따라 자아성향과 과제성향은 차이가 없을 것이라는 두 개의 영가설을 설정하고 이를 검증하고자 하였다. 연구대상으로는 2018년도 청소년 배드민턴 국가대표 하계 합숙훈련에 소집된 중,고등학생 92명으로 하였고, 이들의 학교급별 단식 전체리그 결과를 토대로 하여 경기력 상,하 집단으로 구분하여 자아성향과 과제성향의 차이를 각각 알아보았다. 검사도구로는 스포츠 성취목표지향성에 관한 검사지(Task & Ego Orientation in Sport Questionnaire, TEOSQ)를 사용하였다. 자료의 경향을 파악하기 위해서 빈도분석을 실시하였고 검사지의 신뢰도를 알아보기 위해서 신뢰도 분석(Cronbach's α)을 실시하였으며 마지막으로 경기력 집단 간 성취목표성향의 차이를 알아보기 위하여 독립 t검증을 실시하였다. 그 결과, 경기력 상집단과 하집단 간에 자아성향과 과제성향 두 요인 모두 통계적으로 유의한 차이가 나타나지 않았다. 연구결과를 토대로 논의하였다.

• 한국운동역학회지
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• 제22권2호
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• pp.159-171
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• 2012

The purpose of this study was to provide information about kinematic variables of the gliding and delivery motion of Hyung-Keun Lee, a high school shot putter who was ranked 1st at the 2011 National Sports Festivals. Three-Dimensional motion analysis using a system of 4 video cameras at a sampling frequency of 60 Hz was conducted during shot-putting events at the 2011 National Sports Festivals. During the gliding and delivery phase of the player the results showed following characteristics; 1) The gliding technique types of the player appeared to be the short-long technique as the gliding and stance length ratio were $42.3{\pm}3.87$ % and $57.7{\pm}3.87$ %, respectively. In addition, the trajectory of shots during the gliding and delivery phase showed different trajectory patterns with "S-shaped" type of elite players due to the deviation from a central axis of the APSS (athletic-plus shot system). 2) The horizontal velocity of COG made from gliding should maintain the velocity during transition and release phase, but the player showed a small momentum for a gradual decrease of velocity. 3) Therefore, the player requires to adjust an appropriate ratio between gliding and stance length with a strong muscle power at the trunk, throwing arm, and the lower extremity during gliding and delivery phase.

• 아동학회지
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• 제27권5호
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• pp.67-78
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• 2006

This study investigated interaction effects of stress and coping strategies on depression among middle school students. The scale created to measure coping strategies included three types of coping strategies : problem-focused, emotion-discharge, and affective-regulation. Two hundred forty-four students were selected from juniors of two middle schools in Seoul. Boys used problem-focused and affective-regulation coping strategies more than emotion-discharge coping strategies. Girls used affective-regulation coping strategies most frequently. The interaction effects of emotion-discharge coping strategies for boys and problem-focused coping strategies for girls were significant. Findings were discussed in developing coping education programs for intervention of adolescent depression.

• 아동학회지
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• 제30권4호
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• pp.173-189
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• 2009

This study investigated contextual characteristics and developmental functions of time spent alone in early adolescence. Participants were 107 6th grade elementary school students. The Experience Sampling Method was used to measure experiences of time spent alone. Findings were that : (1) 2.6% of an early adolescents' daily waking time was involuntarily spent alone and 14.8% was voluntarily spent alone. (2) Psychological states of voluntary time spent alone were more positive than those of involuntary time spent alone, and psychological states of voluntary time spent alone were not significantly different from those of time spent with family members or friends. (3) Experiences during voluntary time spent alone were related to adjustment, suggesting that time spent alone during early adolescence contributes to positive development.

• 한국운동역학회지
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• 제13권2호
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• pp.1-12
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• 2003

This study was performed to provide normative isokinetic strength of knee muscles of middle school non-athletic and athletic populations for rehabilitation and pre-season screening for injury prevention. Seven non-athletic subjects and 8 hockey players participated in this investigation. Each subject was tested at speeds of $60^{\circ}/sec$, $180^{\circ}/sec$, and $300^{\circ}/sec$. The free weight of lower leg was measured at speed of $60^{\circ}/sec$ to take gravity effect Into consideration when peak torque of knee muscles occurred. The results showed that the relative peak torque production of knee flexors did not change but the relative peak torque of knee extensors decreased significantly. Mamstring/quadriceps ratios increased mainly due to significant decreases in knee extensors torque production. No significant differences were found between groups. The hamstring/quadriceps ratios for both groups were significantly lower when the gravity effect was not eliminated.

• 문화기술의 융합
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• 제8권1호
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• pp.59-66
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• 2022

본 연구는 청소년 축구선수를 대상으로 하여 성취목표성향(과제, 자아지향성)과 자기관리(몸, 대인, 훈련, 정신관리) 검사로 우수선수(연령대별 대표선수)와 비우수선수(일반선수)를 판별할 수 있는가를 알아보기 위하여 수행되었다. 대한축구협회에 등록된 중,고등학교 선수를 모집단으로 하여 연령대별 대표선수 131명, 일반선수 168명 등 총 299명(중학생 144명, 고등학생 155명)을 연구대상으로 하였다. 자료수집을 위한 검사지로는 Duda와 Nicholls(1989)가 개발한 스포츠 성취목표지향성에 관한 검사지(TEOSQ: Task & Ego Orientation in Sport Questionnaire)와 허정훈(2003)이 개발한 운동선수 자기관리 검사지(ASMQ; Athletes' Self-Management Questionnaire)를 사용하였다. 자료분석은 SPSS 23버전을 이용해서 빈도분석, 요인분석, 신뢰도분석, 판별분석을 실시하였다. 자료를 분석한 결과, 성취목표성향의 하위 요인인 과제지향성과 자아지향성은 둘 다 우수 선수와 비우수 선수를 판별하지 못하는 검사로 확인되었다. 반면에 자기관리 검사는 하위 요인중 대인관리를 제외한 몸관리, 훈련관리, 정신관리가 우수선수와 비우수선수를 판별할 수 있는 검사로 확인되었다. 특히, 자기관리 중 정신관리가 우수선수와 비우수선수를 판별하는데 있어서 가장 중요한 요인으로 확인되었다.