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      • An Exploratory Study of Smart Sportswear Segments for Motion Sensors-Focusing on Rowing Motions

        ( Seonhyung Park ),( Bo Ram Han ),( Bokku Kang ),( Hae Dong Lee ),( Han Sung Kim ),( Joohyeon Lee ) 한국감성과학회 2015 추계학술대회 Vol.2015 No.-

        Lots of interdisciplinary studies for fusion of high technologes and the other areas of research had tried in these days. In sports training area, high technologies like a vital sign sensor or an accelerometer were adopted as training tools to improve the performance of the sports players. The purpose of this study is finding the proper locations on the human body for attaching the motion sensors in order to develop a smart sportswear which could be helpful in training players. The rowing was selected as a subject sport as lots of movements of the joint on human body could be seen in rowing motions. The players of rowing could be devide into two weight divisions, the lightweight and the heavyweight. In this study, the rates of changes on human skin as the players moved were took on the back, the elbow, the hip and the knee area on human body by 3D motion capturing system. The distances between markers and he differences between the lightweight and heavyweight were analyzed. Finally, the guide lines for designing a mtion sensing smart sportswear.

      • KCI등재

        동작에 따른 피부변화 분석을 통한 동작센서 부착의 최적위치 탐색: 조정 동작을 중심으로

        한보람 ( Bo-ram Han ),박선형 ( Seonhyung Park ),조현승 ( Hyun-seung Cho ),강복구 ( Bokku Kang ),김진선 ( Jin-sun Kim ),이주현 ( Joohyeon Lee ),김한성 ( Han Sung Kim ),이해동 ( Hae-dong Lee ) 한국감성과학회 2017 감성과학 Vol.20 No.1

        하이테크놀로지를 여러 가지 다른 영역과 융합하고자 하는 노력이 다양한 연구 분야에서 시도되고 있으며, 스포츠웨어를 개발함에 있어 운동선수의 운동능력을 향상시키기 위한 분야에 이러한 첨단 기술들이 도입되고 있다. 본 연구는 스포츠 훈련에 도움이 되는 동작 센싱 스마트 스포츠웨어를 개발하기 위한 기초 연구로서, 조정 동작 시 관절의 움직임을 측정할 수 있는 동작 센서를 부착하기 위한 인체상의 최적 위치를 탐색하는 것을 목적으로 한다. 본 연구에서는 일관된 동작을 반복적으로 수행할때 관절의 변화가 큰 조정을 대상 스포츠로 선정하였으며, 조정 선수의 대표 체급인 중량급과 경량급의 피험자를 선정하여 동작에 따른 피부의 변화율을 측정하여 체급별 차이를 분석하였다. 먼저, 3차원 모션캡처 시스템을 이용하여 조정 동작 시 등, 팔꿈치, 엉덩이, 무릎 부위의 피부 변화를 촬영하고, 각 마커 간 거리의 변화율을 분석함으로써 체급에 따른 차이를 보이지 않으면서 동작에 따라 피부의 변화가 큰 부분을 인체 상에 도시하였다. 이를 바탕으로 동작 센싱용 스마트 스포츠웨어를 위한 센서 부착의 가이드라인을 제시하였다. Lots of interdisciplinary studies for fusion of high technologes and the other areas of research had been tried in these days. In sports training area, high technologies like a vital sign sensor or an accelerometer were adopted as training tools to improve the performance of the sports players. The purpose of this study is finding the proper locations on the human body for attaching the motion sensors in order to develop a smart sportswear which could be helpful in training players. The rowing was selected as a subject sport as lots of movements of the joint on human body could be seen in rowing motions. The players of rowing could be devided into two weight divisions, the lightweight and the heavyweight. In this study, the change rates of distance between markers on human skin as the players moved were took on the back, the elbow, the hip and the knee area on human body by 3D motion capturing system. The distances between markers and the differences between the lightweight and heavyweight were analyzed. Finally, this study provided the guide lines for designing a motion sensing smart sportswear.

      • Digital Coloring Clothing and Emotion

        ( Jin Hee Yang ),( Hyun Seung Cho ),( Seonhyung Park ),( Joo Hyeon Lee ) 한국감성과학회 2015 추계학술대회 Vol.2015 No.-

        In this research, we investigated the luminance efficiency of the computerized embroidery methods applied to the flexible POF for realization of the textile display. Due to the nature of the flexible POF similar to that of textile yarn, it has been enabled to realize a flexible textile display by application of some adjusted fabrication methods to it. However, besides the simple property of flexibility, two requirements are still demanded for the flexible POF-based textile display and emotion: high-luminance and the method for realization of pixels in a display. Among the fabrication methods, the machine embroidery has feasibility to realize relatively higher luminance of the flexible POF-based textiles through a simple procedure. The aim of this study is to evaluate of the feasibility of the embroidery method for the flexible POF-based textile display in terms of luminance, and to approach to the suitable condition in the embroidery method to realize the textile display and emotion. To do this, the four embroidery methods, in which the bending angles from ‘around 90°’ to ‘around 180°’ were applied to the flexible POF, were developed in this study. The luminance at fifteen locations in the bent shapes in each of the four embroidery methods were examined and compared. Based on the resulted luminance efficiency according to the four embroidery methods, the suitable conditions for the embroidery method to realize relatively higher level of luminance for the textile display were suggested.

      • KCI등재

        Comparison of Biomechanical Characteristics of Rowing Performance between Elite and Non-Elite Scull Rowers: A Pilot Study

        Kim, Jin-Sun,Cho, Hanyeop,Han, Bo-Ram,Yoon, So-Ya,Park, Seonhyung,Cho, Hyunseung,Lee, Joohyeon,Lee, Hae-Dong Korean Society of Sport Biomechanics 2016 한국운동역학회지 Vol.26 No.1

        Objective: This study aimed to examine the characteristics of joint kinematics and synchronicity of rowing motion between elite and non-elite rowers. Methods: Two elite and two non-elite rowers performed rowing strokes (3 trials, 20 strokes in each trial) at three different stroke rates (20, 30, 40 stroke/min) on two stationary rowing ergometers. The rowing motions of the rowers were captured using a 3-dimensional motion analysis system (8-infrared camera VICON system, Oxford, UK). The range of motion (RoM) of the knee, hip, and elbow joints on the sagittal plane, the lead time ($T_{Lead}$) and the drive time $T_{Drive}$) for each joint, and the elapsed time for the knee joint to maintain a fully extended position ($T_{Knee}$) during the stroke were analyzed and compared between elite and non-elite rowers. Synchronicity of the rowing motion within and between groups was examined using coefficients of variation (CV) of the $T_{Drive}$ for each joint. Results: Regardless of the stroke rate, the RoM of all joints were greater for the elite than for non-elite rowers, except for the RoMs of the knee joint at 30 stroke/min and the elbow joint at 40 stroke/min (p < .05). Although the $T_{Lead}$ at all stroke rates were the same between the groups, the $T_{Drive}$ for each joint was shorter for the elite than for the non-elite rowers. During the drive phase, elite rowers kept the fully extended knee joint angle longer than the non-elite rowers (p < .05). The CV values of the TDrive within each group were smaller for the elite compared with non-elite rowers, except for the CV values of the hip at all stroke/min and elbow at 40 stroke/min. Conclusion: The elite, compared with non-elite, rowers seem to be able to perform more powerful and efficient rowing strokes with large RoM and a short $T_{Drive}$ with the same $T_{Lead}$.

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