경호무도 수련 시 전방낙법 동작의 근활성도 분석

신의수(Shin, Eui-Su) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6

The study is to present quantitative data needed to effectively control the impact force through the EMG(Electromyography) analysis of the students" security martial arts forward breakfall movement. The results of this study are as follows. First, t he m uscle activity o f the security m artial a rts forward break fall ready posture(E1) in t he movement, there was no significant difference. But that was observed muscle activity of the right and left of the erector spinae appear high, then the triceps, Pectoralis major, upper arm triceps appeared in order. Second, the muscle activity of the primary impact point(E2) in the security martial arts forward breakfall movement, there was no significant difference. But it was born with the right brachial triceps muscle activity appeared high on the left, and then appeared in the deltoid, Pectoralis major, erector spinae order. Third, the muscle activity of the secondary impact point in the security martial arts forward breakfall movement, there was no significant difference. Both are skilled it showed that the muscle activity of the right and left deltoid high, unskilled both the right and left of the Pectoralis major muscle activity showed that high. Fourth, the muscle activity of the secondary impact point in the security martial arts forward breakfall movement, there was no significant difference. Pectoralis major muscle activity was observed, however, the right and on the left appears high, then the triceps, the brachial triceps, those in the erector spinae order. This study concluded comprehensive if security martial arts forward breakfall movement of trains do when primary impact point at an effective shock absorption to the brachial triceps and deltoid to effectively use secondary impact point at the elbow in the coming shock reduction should be expected to be.

청소년의 스마트폰 사용 중 간헐적 경부 스트레칭 운동이 근골격계 건강위험요인에 미치는 영향

신의수(Shin, Eui-Su) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.4

The purpose of this study was to analyze how intermittent stretching exercise affects musculoskeletal health risk factors(neck range of motion, muscle activity, pressure pain) when using the smartphone in adolescents. The results of this study are as follows. First, there was no significant difference in musculoskeletal health risk factors pre and post smartphone use in the experimental group. Second, there were significant differences in musculoskeletal health risk factors pre and post smartphone use of the control group. Third, there was no significant difference in musculoskeletal health risk factors before the use of smartphone in the experimental group and the control group. Fourth, the musculoskeletal health risk factors before the use of smartphone in the experimental group and the control group showed a significant difference in muscle activity of the levator scapula, and no significant difference in other factors. From the above results, it was found that when adolescents use their smartphones for 60 minutes without stretching exercises in a chair sitting position, it was found that the musculoskeletal system (neck range of motion, muscle activity, pressure pain) was negatively affected, but 15 minutes It was found that the negative effects on the musculoskeletal system were significantly reduced when simple neck stretching exercises were performed in units.

가사노동 설거지 시 테이핑과 스트레칭운동이 만성요통 주부에게 미치는 효과에 관한 생체역학적 연구

신의수(Shin, Eui-Su),김준식(Kim, Jun-Sik) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.6

The purpose of this study was to analysis the effects of lumbar taping and stretching exercise interventions on trunk range of motion, pressure pain, and lumbar muscle activity during housework washing dishes for chronic low back pain homemakers, and the following conclusions were drawn. First, it was found that lumbar taping and stretching exercise interventions were effective for trunk flexion, extension, left flexion, and right flexion during housework washing dishes for chronic low back pain homemakers. Second, it was found that lumbar taping and stretching exercise interventions were effective for low back tenderness during housework washing dishes for homemakers with chronic low back pain. Third, lumbar taping and stretching exercise interventions were also effective in L3 muscle activity during housework washing dishes for chronic low back pain homemakers. Summarizing the results of this study, it can be seen that simple lumbar taping and stretching exercise interventions were effective in the trunk range of motion, pain, and lumbar muscle activity during housework washing dishes for homemakers with chronic low back pain.

중학교 남자 체조선수 마루운동 착지 동작 시 상해요인의 운동학적 분석

신의수(Shin, Eui-Su),최정규(Choi, Jung-Kyu),김상두(Kim, Sang-Doo) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.3

The purpose of this study is to conduct a kinematic analysis on the causes of injury when six. Athletes of a sports middle school in city D carry out their 360° twist landing in floor exercise. The study results offered the following findings. First, the time it took to carry out the landing was .14 ±.04 s. Second, the range of motion in the CM(center of mass) on the left and right was within .03 ±.02 m, and within 34 ±. 09m for front and back. The range of motion in CM vertically was within .15 ±. 04 m. Third, the CM horizontal velocity was 2.72 ±. 24 m/s for Event 1 and 1.83 ±.69 m/s for Event 2. The CM vertical velocity was -2.96 ± 45 m/s for Event 1 and -.28 ±. 24 m/s for Event 2. Fourth, during landing the joints in the hip, knees and ankles were bended. The range of angle during bending was, in the order of hip joints, knee joints and ankle joints. Fifth, the outward rotation angle of the knee at landing was reduced. Taken together, the above findings suggest that taking more time when landing through a 360° twist landing movement and having an appropriate bending range for the lower limb joints can help reduce the cause of injury. It also seems important to reduce the outward rotating angle of the knees.

측방낙상과 측방낙법 동작의 운동역학적 비교분석

신의수(Shin, Eui-Su),최정규(Choi, Jung-Kyu),김상두(Kim, Sang-Doo) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.3

The purpose of this study was to provide a quantitative base data needed to minimize physical injuries from side fall by comparing and analyzing the kinetic of the motion of side fall and side breakfall. The subjects for the motion of side fall were five healthy male university students, while the subjects for the motion of side breakfall were five male black belt holder. For the video recording, nine high speed cameras (Motionmaster 100, KOR) were used and for the analysis of impact force, a force plat (AMTI, USA) was used. To analyze the video and impact force, the program Kwon3d XP(Visol, KOR) was used. Using the technical statistical of SPPSS 18.0 program, the average and standard deviation were calculated and an independent t-test conducted to verify the difference between groups. The conclusions drawn from this study are as follows. First, the duration time was longer for side breakfall at P2 (p<.05), while there was no significant difference in total duration time. Second, the COM(center of mass) position was shortest for the left/right and front/back range of side breakfall, and there was a statistically sifnificant differecne at E2 and E3(p<.05). Third, the COM(center of mass) velocity was slowest for side breakfall at E3 where the impact force of the hip is at its highest, with a statistically significant difference (p<.05). Fourth, the impact velocity of the hand when it hits the ground at E2 showed the highest for side brekfall with a statistically significant difference (p<.05). Fifth, the impact velocity of the hip was highest for side breakfall at the left/right velocity and vertical velocity, with a statistically significant difference (p<.05). The greatest impact force of the hip was 1.06 BW for side breakfall and 2.15 BW for side fall with as tatistically significant difference (p<.05). Synthesis of the results is as follows. Suggest that in order to reduce hip impact force, the following factors are important. Side fall during a long time and you need to slow down the COM velocity. And you should slow down the impact velocity of the hip.

육군 차세대경계시스템의 효율적 운용방안 연구

신의수(Eui-Soo Shin),김태현(Tae-Hyun Kim),차지은(Ji-Eun Cha),한재경(Jae-Kyung Han) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.2

In this study, we discuss on the elements necessary for the successful introduction of "Advanced Surveillance System". The ROK.Army leads countless changes with「Defense Reform 2.0」. And introduction of scientific system is core discourse for the「Defense Reform 2.0」. The background of this change is the necessity of responding to the demands of the Revolution 4.0 and strengthening of the troops. So, the 「Defense Reform 2.0」 will transform the current personnel-based system to a high-tech based one. It is same for surveillance system. The paradigm of surveillance system is changed by introduction of "Scientific Surveillance System" and "Coastal Complex Surveillance System". However, the development of the operating system seems to be lagging behind that of the equipment. The introduction of "Scientific Surveillance System" and "Coastal Complex Surveillance System" change the surveillance operation from standing guard duty for one sector by two sentry to monitoring multiple sector by one CCTV control agent. But it is organized without considering the capacity of the agent that the number of screens monitored by one CCTV control agent. In this study, it was confirmed that the cause of the failure of surveillance operation is this problem in the last 5 years. Therefore, we can confirm that the development of the operating system-that is constructed by "Human resource", "Security regulations", "Security verification system"- is as important as the development of the equipment. so, we confirm the development direction of the operating system to efficiently operate the "Advanced Surveillance System".

무도 전방낙법 동작 시 충격력 감소 요인의 운동역학적 분석

신의수(Eui Su Shin),오정환(Cheong Hwan Oh),홍수영(Soo Young Hong),박찬호(Chan Ho Park) 한국사회체육학회 2014 한국사회체육학회지 Vol.0 No.57

The purpose of this study was to provide basic quantitative data to minimize the impact occurring during forward breakfall by the comparative analysis of kinetic factors through 3D motion analysis and analysis of GRF of the forward breakfall of the martialarts targeting 10 skilled and 10 unskilled subjects. The following are the findings. First, the total time taken for forward breakfall of the martial arts showed 1.53±0.04 s for skilled, and 1.41±0.06 s for unskilled subjects. Second, forward breakfall of the martial arts operation showed significant left and right position of center of mass in P2, P3, and P4. In addition, the unskilled subjects showed larger forward and rearward position in P1, P2, P3, and P4, while the skilled subjects showed larger vertical position in P2. And the unskilled subjects showed faster forward and rear movement of center of mass in P2, P3, and P4, respectively. And unskilled subjects showed faster vertical velocity of center of mass in P2 and P3. Third, as for the upper extremity joint angle during forward breakfall, skilled subjects showed larger right shoulder joint angle in P4, and unskilled subjects showed larger left shoulder joint angle in P2 and P3. Unskilled subjects showed greater elbow joint angle both right and left side in P1 and P3, and skilled subjects demonstrated larger wrist joint angle both right and left side in P1. Fourth, the forward breakfall of the martial arts did not show any difference between left and right side in the GRF, but unskilled subjects proved a significantly greater forward and backward GRF in the secondary point of impact(E3) both right and left sides. The skilled subjects showed a significantly greater vertical GRF in the primary point of impact (E2), and unskilled subjects showed a larger vertical reaction force in the secondary point of impact (E3), respectively.

대학 여자 멀리뛰기 엘리트 선수와 아마추어 선수의 각운동량 비교분석

신의수(Shin, Eui-Su) 한국체육과학회 2022 한국체육과학회지 Vol.31 No.5

The purpose of this study was to compare and analyze the angular momentum of the lower extremities and upper extremities and the resultant velocity of the COM(center of mass) in the long jump motions of elite female long jump athletes and amateur athletes. This study obtained the following results. First, the average angular momentum of the right arm of the elite female long jump athlete and amateur athlete during the long jump action was high in all events except Event 4, Event 5, and Event 6, and there was a significant difference in Event 8. Second, the average angular momentum of the left arm during the long jump of elite female long jump athletes and amateur athletes was high in all events except Event 3, Event 4, and Event 5, and there was a significant difference in Event 8. Third, the average angular momentum of the right leg of the elite female long jump athlete and amateur athlete during the long jump was high in all events except for Event 3 and Event 4. There was a significant difference between Event 3 and Event 8. Fourth, the average angular momentum of the left leg of the elite female long jump athlete and amateur athlete during the long jump operation was high in all Events except Event 1 and Event 5, and there was a significant difference in Event 8. Fifth, the average COM resultant velocity of the elite female long jump athlete and amateur athlete during the long jump action showed that the average COM resultant velocity of all Event elite athlete was high, showing a significant difference.

물구나무서서 다리 벌려 앞구르기 동작의 운동학적 분석

신의수(Shin, Eui Su),이수근(Lee, Soo Keun) 한국체육교육학회 2022 한국체육교육학회지 Vol.27 No.2

차세대 해안경계시스템에 관한 연구

이장일,신의수,차지은,Lee, Jang-Il,Shin, Eui-Soo,Cha, Ji-Eun 한국해양전략연구소 2022 해양안보 Vol.4 No.1

The Korean military is preparing for successful manpower reduction using advanced science and technology, in addition to carrying out the initiative of the Defense Innovation 4.0. Accordingly, studies on core technologies related to defense reform have been conducted both internally and externally in the military, and the corresponding results have also been applied. Nevertheless, compared to the development of such technologies, it is considered necessary to have more preparation for the policies related to the operation of the newly introduced equipment. As for the placement of personnel and the organization of time in service (TIS) with respect to the operation of surveillance equipment, there has been a tendency to sustain the conventional practice. Therefore, this study intends to suggest the schemes for facilitating policy improvements in the operation of manpower and security regulations in the field of information for the purpose of introducing a successful next-generation coastal guard system. To do this, the approach of this study was focused on the policies for the operation of the guard system. This is in contrast to previous studies that centered on its equipment and technologies. In addition, how to efficiently operate the guard system was also studied in view of cognitive science by deriving the most efficient time for a person to execute surveillance through the monitor based on the previous studies.