수영 돌핀킥 동작의 운동학적 분석

유도상(Ryu, Do-Sang) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.1

This research aims to investigate the effects of the Dolphin Kick, which is currently a buzzword as a strategic method to improve swimmers’ records, through a two dimensional analysis method, called DLT (Direct Linear Transform) and propose effective dolphin kick techniques using the research outcome. We chose six high school swimmers to make two groups, which of one was excellent swimmers’ group and the other normal swimmers’ group. We studied kinematic variables while the group members I practicing the dolphin kicks and established a practical basis to provide teaching guidelines based on the study outcome. The research outcome can be summarized as below; Firstly, the excellent swimmers group demonstrated faster completion in practicing the first and second phase of the dolphin kick except the third phase than the other group. In the total completion time the excellent swimmers group showed faster performance than the other one. Secondly, the excellent group showed wider angles in using the joints of ankles, knees and hip, whereas the normal swimmers group used wider angles in using shoulders and elbows joints than the other group. Thirdly, the excellent swimmers group demonstrated faster movement in the movements of the joints of their feet, lower legs and thighs while the other group showed faster movement in using their upper-arms and fore-arms. Lastly, the excellent swimmers group showed wider horizontal displacement of the centre of gravity in all phases of the dolphin kick practice. The normal swimmers group demonstrated higher vertical displacement in all the phases of the kick practice.

직장인 운동프로그램이 건강관련 체력에 미치는 영향

유도상(Ryu Do-Sang) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.3

The purpose of this study is to reveal the effects of 16-wks workers exercise program on the changes of cardiorespiratory fitness, muscle strength, body composition, flexibility between control/ exercise group with middle-age female workers of C-corporation. The control group was 30 subjects and the exercise group was 23 subjects. The program was performed for 16 weeks, and all subjects took a consultation about exercise, nutrition every two weeks, totally 8 times. The exercise group did exercise over 3 times a week spontaneously in health or fitness centers. The aerobic exercise was designed for jogging over 30 minutes a day at 5.5~6.5㎞/h(sometimes 9㎞/h) and the resistance exercise was planned to doing 3 sets(10-15RM for one set) a day and increased gradually. As a result of analyzing the change of health-related fitness(cardiorespiratory fitness, muscle strength, body composition, flexibility) factors after 16-weeks exercise program, we concluded above following. Between pre-/post- program, the VO₂max of exercise group was increased statistically significant after exercise program(p<.05). The bilateral knee joint peak torque of exercise group was increased statistically significant after exercise program(p<.05). The %fat(body composition) of both groups had no difference after exercise program. At last, the flexibility of exercise group was increased statistically significant after exercise program(p<.05).

Identifying physical activity patterns in youth with autism spectrum disorders using accelerometers

Ryu, Do-Sang(유도상),Jeong, Irully(정이루리) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.6

본 연구의 목적은 자폐성 장애 아동 및 청소년들의 신체활동 패턴을 가속도계를 활용하여 객관적으로 파악하고, 일반화 이론에 근거하여 자폐성 장애를 가진 아동 및 청소년들의 신체활동을 신뢰성 있게 측정하는데 요구되는 최소 측정 기간을 제시하고자 하는데 있다. 본 연구를 위하여 만 9-18세 사이의 34명(남 26명, 여 8명)의 자폐성 장애아동의 신체활동 데이터를 활용하여 2차 분석(secondary analysis)을 실시하였으며, 일반화 이론 분석방법을 사용하여 자폐성 장애 청소년을 위한 효과적인 측정 기간을 알아본 결과는 다음과 같다. 첫째, 본 연구에 참가한 자폐성 장애를 가진 참가자들은 주중과 주말 사이에 모든 신체활동수준에서 통계적으로 유의한 차이가 발견되지 않았다. 둘째, 자폐성 장애 남성 참가자는 여성 참가자에 비해 많은 신체활동 양을 기록했으나 주중에서만 유의한 차이가 발견되었다. 셋째, 9-11세 자폐성 장애참가자는 12-18세 자폐성 장애 참가자에 비해 높은 신체활동량을 기록했으나 주말에만 그 차이가 유의하였다. 마지막으로, 자폐성 장애 참가자의 신뢰성 있는 신체활동 측정을 위해서는 최소 2일간 그리고 매일 9시간 이상의 측정시간이 요구된다는 결과를 얻을 수 있었다. 본 연구에서 제시된 결과를 바탕으로 자폐성 장애 아동 및 청소년의 신뢰성 있는 신체활동을 측정하기 위해서는 주중 및 주말 구분 없이 측정하는 것이 가능하다고 판단되며, 비장애인의 신체활동 측정보다 더 짧은 측정시간으로 인해 보다 효율적인 자료수집이 가능할 것으로 기대된다. 또한 성별 및 연령에 따른 자폐성 장애 아동 및 청소년의 신체활동 특성을 파악하여 신체활동의 향상을 극대화 시킬 수 있는 맞춤형 프로그램 개발이 가능할 것으로 기대된다.

12주간 걷기운동이 중년여성의 대사증후군에 미치는 영향

유도상(Ryu, Do-Sang),김근수(Kim, Keun-Su) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.6

The purpose of this research is to investigate the effects of 12 weeks walking exercise on metabolic syndrome in middle-aged women. Subjects of this experiment were 185 women between age of 40 and 65(average 53.86±6.7) who lives in Junggu(part of Seoul) and participated in Walking Trainer Program by local health center. Final number of subjects were 110 as 42 of them have given up and 33 were absent on post examination. Exercise program consists of walking at a speed of 5-6㎞/h for 60 to 90 minutes, twice a week for 12 weeks. Experiment on the effect of walking exercise on metabolic syndrome showed that prevalence rate decreased by 8.3% from 25% to 16.7% after the exercise. When analyzing the frequency, abdominal obesity(-7.2%), low HDL-C(-6.3%), hypertension(-9.1%) and hyperglycemia(-6.4%) improved but there were no changes in TG. T-test performed to investigate the effect of walking exercise on metabolic syndrome showed that abdominal obesity(p<.001), systolic pressure(p<.001), diastolic pressure(p<.001) were reduced, however, other measures showed no statistically significant change. In conclusion, 12 weeks of walking exercise has improved prevalence ratio of metabolic syndrome in middle-aged women and effectively improved metabolic syndrome indicators.

A study on physical activity in youth with Down syndrome using accelerometers

Jeong, Irully(정이루리),Ryu, Do-Sang(유도상) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.6

본 연구의 목적은 다운증후군 아동 및 청소년의 신체활동을 가속도계를 사용하여 객관적으로 측정하고 일반화 이론을 사용하여 이들의 신뢰성 있는 신체활동 측정에 요구되는 최소 기간을 파악하는데 있다. 본 연구 참가자로서 만 8세부터 18세 사이의 다운증후군 아동 및 청소년을 대상으로 하였고 정상적인 보행이 불가능하거나 신체 보조기구를 사용하는 참가자는 본 연구에서 제외하였다. 총 81명의 다운증후군 아동 및 청소년이 참가하였으며 모든 참가자는 가속도계를 오른쪽 허리에 위치하도록 하여 총 7일 간, 매일 10시간 이상을 착용하도록 하였다. 또한 본 연구 참가자의 신뢰성 있는 신체활동 측정을 위한 최소 기간을 알아보기 위해서 일반화 이론(Generalizability theory)을 사용하여 분석하였다. 본 연구 결과 다운증후군 참가자들은 주중 남학생과 여학생 간 신체활동에 유의한 차이가 없었으나, 주말에는 유의한 차이를 나타내었고, 남학생의 경우 주중과 주말의 신체활동에 유의한 차이가 없는 반면, 여학생들은 주중과 주말에 유의한 차이를 나타낸 것으로 조사되었다. 또한 초등학교에 재학 중인 참가자들은 중학교에 재학 중인 참가자들에 비해 주중과 주말 모두 신체활동이 유의하게 높은 것으로 나타났으며 초등학생, 중학생 집단 모두 주중과 주말 사이에는 유의한 차이를 나타내지 않았다. 마지막으로, 이들에게 필요한 최소 측정 기간을 조사한 결과 최소 4일, 매일 14시간 이상을 필요로 한다는 결과를 도출해 내었다. 본 연구에서 제시된 결과를 바탕으로 다운증후군 아동 및 청소년의 신체활동을 향상시키기 위해서는 이들의 성별 및 나이에 맞는 보다 개별화된 신체활동 향상 프로그램을 제시해야 할 필요가 있으며, 보다 객관적이고 신뢰성 있는 데이터의 확보를 위한 최소한의 측정 기간을 활용함으로써 자료 수집에 필요한 시간 및 비용을 최소화할 수 있는 근거를 제시하는데 본 연구의 가치가 있다고 할 수 있다.

체육계 고등학생들의 진로자기 효능감과 진로의사결정에 관한 연구

민창기(Min, Chang-Gi),유도상(Ryu, Do-Sang),김인기(Kim, In-Ki) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.6

This study aim was to investigate the effect of career self-efficacy on career decision-making in physical high school students and support fundamental material for decision-making process. For this study, 470 of male and female high school students(third grade) who selected randomly from fifteen sports high school in the provinces and the cities were participated. For data analysis, mean and standard deviation scores were calculated, descriptive analysis, factor analysis, reliability analysis, t-test, one-way ANOV A and multiple regression analysis were used. The result of this study were as follow: First, female students of sports high school showed higher career self-efficacy and the group of between 3 to 5 years’ career experiences showed higher career self-efficacy and the group with prize-winning experiences demonstrated higher levels of career self-efficacy. Also, high level of household monthly income demonstrated higher career self-efficacy. Second, the group of man-to-man type sport events scored higher career decision-making and the group of prize-winning experiences showed meaningful significance indicating higher career decision-making. In the variable of parents’ education level the students whose parents’ education level was lower than others showed the tendency to use the intuitive type of decision making. Lastly, All factor of career self-efficacy including rational type, intuitive type and dependent type showed significantly effect on career decision-making. Therefore, this study may suggest that solving problems variable is more important to improve their self making decision and leaders should recognize that the solving problem ability is meaningful and they need to draw students’ ability to make their decision.

체육인 공제회법안에 관한 연구

손석정(Seok Jung Shon),유도상(Do Sang Ryu) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.37

The purpose of this study was to provide basic material which are helpful to development and establishment of the sportsmen & women`s mutual-aid association and we have the results and suggestions as follows by investigating the sportsmen & women`s mutual-aid association law and Welfare system in Korea. First, the Special quality of the sportsmen & women`s mutual-aid association was legal system that prescribe substance by law. It is a nonprofit public organization which do wellbeing promotion and stabilization of livelihood by purpose. Second, must limit member`s extent by connection organization`s employees directly with elite sports person(referee, athlete, coach etc) because of governmental financial support. Third, the business of sportsmen & women`s mutual-aid association is consisted of allowance, welfare, fund furtherance business. The details businesses consider retirement allowance, injury allowance, athlete`s hospital operation, school expenses finance, employment information offer, life safety fund lending, sizable sum of money preparation saving business etc. Fourth, plan that given period government supports for budget security or a person who is short in constant level is plan supporting in user or country is considered.

Comparison of physical activity between youth with down syndrome and youth with autism spectrum disorders

Jeong, Irully(정이루리),Ryu, Do-Sang(유도상) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.5

The purpose of this study was to examine physical activity patterns among youth with Down syndrome (DS) and Autism spectrum disorders (ASD), to determine if there are differences in these physical activity (PA) patterns between two disability groups, and to estimate the minimum number of monitoring days and hours needed in youth with DS and ASD using the PA data by accelerometers. A total of 107 children and adolescents participated including 43 with DS and 64 with ASD, and all participants were aged 9-18 years. First results indicated that both groups recorded higher PA counts on weekdays compared to weekends, and spent more time in sedentary PA on weekends than weekdays. Second results indicated that there were no significant differences in daily total activity counts between groups on both weekdays and weekends. Final results indicated that both DS and ASD groups needed at least 3d ays of monitoring to obtain reliable PA data a nd that p articipants with DS needed m ore monitoring hours to reach an acceptable level of reliability compared to those with ASD. Based on these results, we found that both groups showed similar patterns in PA and that combining youth with DS and ASD into a larger sample appears to be possible in future research, which will maximize the statistical power for interpretation of the research results. Also, this type of data-based decision may have important implications for subject compliance and overall cost of the research due to shorter monitoring periods compared to people without disabilities.

학교 체육사고에 관한 판례 고찰

손석정(Seok Jung Shon),유도상(Do Sang Ryu) 한국체육교육학회 2003 한국체육교육학회지 Vol.8 No.3

스포츠 TV중계방송 해설자의 영향 및 공신력에 관한 고찰

김도훈(Kim Do-Hun),유도상(Ryu Do-Sang) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.1

The purpose of this study is to examine in-depth the role and importance of a soccer commentator in sports broadcasting through the 2006 FIFA World Cup by interpreting the characteristic of the casters from MBC, SBS, KBS according to the concept of the public trust and comparing with each other in the World Cup broadcasting. The study shows that soccer commentators, who directly or indirectly influence advertising profits and image of their companies responsible for broadcasting the 2006 FIFA World Cup, play various roles satisfying the active viewers' needs. As commentators in charge of broadcasting, when his or her honesty, attractiveness, and expertise supported by firm sports philosophy are fully demonstrated with viewer's in mind, they have even greater influence. Considering viewer who demand various broadcasting styles and position for them, the commentator will not only broadcast a soccer game, but also work for the developed sports society in Korea. With the heightening of the interests in World Cup, the commentator's ability couldn't be judged and satisfied just as a simple factor. Furthermore, if the commentators re-shed light on their role themselves with the long-term insight, they will lead a bright future in sports culture and maintain affirmative image.