스노보드 부츠 개발을 위한 보행동작 특성분석

백진호(Back, Jin-Ho),이주성(Lee, Ju-Sun),시다르타(Siddhartha Bikram Panday),이용식(Lee, Yong-Sik),윤상문(Yoon, Sang-Moon),수다우엔(Xu Dayuan) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6

The purpose of the study was to perform gait analysis of three different winter boots (BD, EZ, NS) and provide reference data for designing a multipurpose snowboard boots which can be used during snowboarding as well as for outdoors activities. Four male snowboarders who were from Korea Youth National Team and demonstrator participated in order to achieve the purpose of the study. Six 3D Motion analysis system (Vicon612 Motion Systems. Ltd., UK) and four force plates (AMTI ORG-6) were used to analyze the changes in kinematic and kinetic variables. Angular variables of lower limbs i.e. Peak max & min of knee and hip angles and Ground Reaction force (Fz) were calculated to measure the effect of three different winter boots on gait. The results obtained from the study are as follows: The type of vamp effected the limb moment. Soft boots (EZ) caused more hip adduction of supporting leg than stiff snowboard boots (BD) during one leg support phase and allowed bigger flexion of hip on swing leg. Wearing stiff snowboard boots (BD) caused larger hip’s internal and knee’s internal and external rotation of the supporting leg than normal winter shoes (NS). Boots type also effected the knee’s external rotation and flexion of the swing leg. Furthermore, it is considered that wearing stiff boots limited the ankle ROM due to which significant differences were also observed in knee flexion of the supporting leg.

동계스포츠 맞춤형 기상지원 서비스를 위한 연구

백진호(Jin-Ho Back),시다르타(Siddhartha Bikram Panday),이주성(Ju-Sung Lee),강효민(Hyo-Min Kang) 한국엔터테인먼트산업학회 2019 한국엔터테인먼트산업학회논문지 Vol.13 No.1

동계스포츠는 레저인구의 확대와 함께 국내 및 국제수준의 대회가 자주 개최됨에 따라 수요자 중심의 스포츠 정보가 더욱 필요해지고 있다. 특히 기상 및 환경정보는 동계스포츠대회를 조직체는 물론이고 직접 진행을 하는 경기운영요원 및 지도자와 선수 모두에게 필수적인 요소가 되고 있다. 이 연구는 동계스포츠 설상 종목을 4개의 종목군으로 그룹화하여 각 그룹별 기상 및 환경정보에 의해 경기운영 및 경기력을 위한 제고하는 중요성 요인이 무엇인가를 구명(究明)하는데 목적이 있었다. 이 연구는 질적연구방법에 의해 이루어졌으며, 11명의 동계스포츠 관련자들이 유목적적 표집법(purposeful sampling)에 의해 정보제공자로서 선정하였다. 심층면담(in-depth interview)을 통해 얻은 자료는 내용분석(content analysis)과 함께 유형화(categorizing)과정으로 분석되었다. 이러한 과정을 통해 얻은 결론은 동계 스포츠경기를 위해 종목별 특화된 기상 및 환경정보 요소들에 의해 경기운영과 경기력에 중요하게 고려해야 하는 요인들이 구명하였다. 이는 동계스포츠 특성에 맞는 세분화된 정보를 제공하여 정보수요자의 활용과 정보재생산의 의미를 갖는다. The purpose of this study was to provide a method to support customized weather and environmental information services for the successful operation of winter sporting events. First, individual in-depth interviews and surveys were conducted with athletes, coaching staffs and experts related to the competition for 10 different winter sports for analysis of their needs. We conducted face-to-face survey and survey considering the training schedule and situation of experts. The recorded voice file was converted into word text, and extracted the weather and environmental information elements embedded in the opinions of the research participants based on literature reviews and data. The findings are expected to provide basic data on the weather conditions required to support specialized weather information for future large winter sports events, including the PyeongChang Winter Olympics.

체조 철봉 Winkler 기술동작의 운동학적 분석

백진호(Back Jin-Ho),이용식(Lee Yong-Sik),윤창선(Yoon Chang-Sun) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.2

The subject of this study was attempted to kinematical characteristics of the Winkler performance at the horizontal bar in men's apparatus gymnastics. The subjects were only one who can performed Winkler. Then it was analyzed using Kwon3D(Visol Korea) 3.0 program. As a result, the first motion wasn't got unfolded the body. It occured weak point that caught the bar narrowly because air rotation and twist distances was not enough. so caught the bar with lower position than horizontal bar. The second motion, it was central to up and down, the body was got unfolded and trunk rotation and twist was good performed. Downswing phase, center of mass was located high position and nearly horizontal bar. so it could safety re-grape, To have a successful Winkler performance, it must be bigger and faster at downward using the centrifugal force and the rotating must be faster at the highest point of the upward and in the air to catch the bar for prepare for next performance.

대학 골프 선수의 Pitching wedge 스윙동작의 운동학적 특성 분석

백진호,윤동섭,김재필,Back, Jin-Ho,Yoon, Dong-Seob,Kim, Jae-Phil 한국운동역학회 2003 한국운동역학회지 Vol.13 No.3

The purposes of present study were to determine the major check-points of golf swing from the review of previous studies, and to suggest additional information on the teaching theory of golf. The golf swing motion of 6 male and female elite university golf players were filmed with 16mm Locam II high speed cameras at the speed of 200f/s, and variables such as time, displacement, angle, velocity were calculated and analyzed by 3D Cinematography using DLT method. The results were: 1. Differences were shown in the ratio of weight distribution on the feet, cocking angle, take-back velocity, club-head velocity at impact depending upon the physical characteristics and club used for swing. 2. Time for the down-swing and impact were $0.27{\sim}0.29s$ in men and $0.29{\sim}0.32s$ in women, which was 1/3 of the time for the back-swing. Women showed longer total swing time than men because of longer time in back-swing, follow-through and finish. 3. Men showed larger range of motion in shoulder and knee joints than women, on the other hand women showed larger range of motion in hip joint than men. 4. Cocking motion and right elbow flexion were occurred at the top of back-swing and cocking release was occurred at the moment of impact. Maximum rotations of shoulder and hip joints were found between the top of back-swing and down-swing phase. 5. Women showed lower back-swing velocity than men, and men showed higher club velocity(men: $38.2{\sim}38.6m/s$, women: $35.1{\sim}36.4m/s$) than women.

인체 무게 중심 분할에 따른 500m 숏트트랙 스피드 스케이팅 출발 기술 분석

백진호,정남주,한기훈,이용구,윤동섭,이용식,Back, Jin-Ho,Chung, Nam-Ju,Han, Ki-Hoon,Lee, Yong-Goo,Yoon, Dong-Seob,Lee, Yong-Sik 한국운동역학회 2003 한국운동역학회지 Vol.13 No.3

The purpose of this study was to attempt new starting motion and supply present starting motion in the 500M short track speed skating according to the center of gravity position. The center of gravity position ratio was divided starting motion into five(type A : front 80%-back 20%, type B front 70%-back 30%, type C : front 50%-back 50%, type D : front 30%-back 70%, type E : front 20%-back 80%). The three dimension motion analysis with DLT(direct linear transformation) method was executed using two video cameras. The following conclusion was that It was appear that reaction and execution time in starting motion was the most short in type B. It was characteristic that step of skaters was shorten and center of gravity position ratio was not effect to change of the step in each event. It was appear that the displacement of type D and type E were longer than that type A and type B during the starting motion. It was appear that skill types of center of gravity position ratio to the front were lower than that to the back and contract a posture. Observing the above, it was conclusion that skill type B of center of gravity position ratio to the tent was more effect than that to the back. But it is important that these skill type was most used to the competition and estimate the result.

체조 기술분석 프로그램의 개발

백진호(Back Jin-Ho),이용식(Lee Yong-Sik),윤창선(Yoon Chang-Sun) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.3

Recently according to the movement of F.I.G, it is estimated that bonus points for linked techniques will be limited as much as possible so that it would induce development of creativity for high level technique. Therefore, our athletes should be interested in developing high level technique rather than learning skill which can be utilized for bonus points in the future. Currently, various activities are held for technical analysis, but because it requires much effort and time for courses such as camera shooting movements, complex data handling, and etc. in limited conditions, immediate feedback is not actually realized. For such reason, information of excellent athletes in the world cannot be obtained, so it cannot be said that its efficiency reaches a high level. In such aspect, the study intends the followings. First, it intends to develop technical analysis system with multimedia function so that athletes could be provided with feedback quickly during training or competing. Second, it intends to establish a basis for providing efficient feedback to athletes by establishing a database which is actually applied after being modified and supplemented by focusing on previous studies and data. The technical analysis system immediately provides feedback information, minimizing the errors of apparatus gymnastics athletes while learning techniques so that they could easily learn high level techniques. In the future, it requires extension to floor exercise and pommel horse, and continuous security in the system is required. Also, web based operation should be considered so that all gymnastic athletes could use it.

스노보드 지상 자세훈련과 슬로프 상에서의 턴 동작 시 운동학적 비교

백진호(Back, Jin-Ho),이주성(Lee, Ju-Sung),Siddhartha Bikram Panday,이용식(Lee, Yong-Sik),주현식(Chu, Hyun-Sik) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.1

The purpose of the study was to validate the training equipment through the kinematical comparative analysis of snowboard turns on actual slope and on training device. Three dimensional motion analysis was performed on both conditions of which changes in vertical displacement of hip and lower limb joint angles in each events were compared. In the results, the position of hip was obtained higher in training device than on actual slope whereas, during the back turn the maximum inclination of the body was observed much smaller in actual slope which is considered as a result to perform stable turns through reducing the angle. In conclusion, as snowboarding involves dynamic movements, the training device chosen for the study could only mimic some aspects as of the real environment and reflects the technical limitation of the equipment. Hence, need of much more complex training device which could facilitate dynamic movements as of real competitive situation is considered be beneficial not only for skill acquisition but also for training specific muscles required in snowboarding.

스키 플레이트 개발을 위한 생리학적 효과 분석

백진호(Back, Jin-Ho),허선(Hur, Sun),이용식(Lee, Yong-Sik),이주성(Lee, Ju-Sung),주현식(Chu, Hyun-Sik),시다르타(Siddhartha Bikram Panday) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.5

The purpose of this study was to investigate analysis of energy expenditure of ski plate in ski players. Six male alpine ski athletes volunteered to participate in the experiment. The rotating F1 made by F Co. and existing products S1 and S2 plates used in the experiment, and the doble blind test were performed. Subjects installing F1→S1→S2 plates each performed three runs. Energy metabolic variables were obtained from portable wireless gas analyzer and polar at rest, lactate threshold (LT), and maximal oxygen uptake (VO₂max) for determination of heart rate (HR), oxygen uptake (VO₂), metabolic equivalent (MET) and energy consumption (EE). The change in HR, VO₂ and EE were more higher when installing F1 than S2 and S1 plate at the LT point. Oxygen uptake as an indicator which showed the mobilization capacity of lactic acid system during energy metabolism and the depletion of energy sources, the concentrations of fatigue substances in peripheral muscle by exercise also more increased with the increased in speed, when installing F1 plate than S2 and S2 plates.

철봉 엔도 360˚엘그립 동작의 기술분석

백진호 ( Jin Ho Back ),박종철 ( Jong Chul Park ),윤종완 ( Jong Wan Yoon ),이용식 ( Yong Sik Lee ),박종훈 ( Jong Hoon Park ) 한국운동역학회 2006 한국운동역학회지 Vol.16 No.3

노인의 건강행동과 삶의 질에 대한 고찰

백진호(Jin-Ho Back),현승권(Seung-Kwon Hyun) 한국코칭능력개발원 2005 코칭능력개발지 Vol.7 No.2