• 복식
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• 제67권2호
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• pp.36-51
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• 2017

Taekwondo has been known as one of the most symbolic korean sports to publicize Taekwondo various groups have performed exhibitions. These exhibition performances have gained popularity domestically and globally due to the exhibitions' display of artistry and technical mastery. Performance wear has also received wide exposure and thus needs artistic symbolism and functional considerations. This study was done to develop Taekwondo exhibition performance wear for K-Tigers, one of the most active Taekwondo exhibition performing groups. Investigation of current Taekwondo exhibition performance wear and interviewing with K-Tigers members and staff were conducted before designing the uniforms. Interviews demonstrated 3 guidelines: First, the uniforms should not be too different from the traditional wear, but still look unique. Second, it should symbolize the Korean spirit and culture. Third, it should be casual and trendy enough to appeal to young people. Based on these guidelines, 3 styles were made: Dobok style, Hanbok style and Casual style. 5 final designs were selected among 75 sketches with the consensus of the K-Tigers members. This was followed by the 3-step correction process: wearing, check fitting, and correcting design and pattern to provide satisfaction to wearers, and give more detailed information to Taekwondo performance wear design.

• 한국운동역학회지
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• 제20권2호
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• pp.183-189
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• 2010

The balanced performance of dominant and non-dominant leg is very important to Taekwondo sparring. The purpose of this study was to investigate whether elite Taekwondo athletes would have balanced biomechanical performance and intra-limb coordination in executing different types of Taekwondo kicks. Twelve athletes(more than 10 year practice experience) participated in this study and performed six basic kicks(i.e., the front, roundhouse, side, back, thrashing, and turning-back kick). Results indicated no statistical difference on response time, peak kicking velocity, single limb vertical jump height, and angle-angle plot between dominant leg and non-dominant leg(p>.05). In conclusion, elite Taekwondo athletes had equivalent ability between dominant leg and non-dominant leg in performing Taekwondo kicks. This might be an advantage to elite athletes for Taekwondo sparring because they could use both leg without any restriction.

• International Journal of Advanced Culture Technology
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• 제11권2호
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• pp.142-151
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• 2023

The purpose of this study is to verify the research model and identify the causal relationship among leader's super leadership, self-leadership, psychological empowerment, sport commitment and performance perceived by Taekwondo athletes. The subjects of the study were middle and high school Taekwondo athletes registered in the Korea Taekwondo Association in 2020 and 2021, and data from 454 people were used as final effective samples through convenience sampling. The collected data used the SPSS 23.0 version and the Amos 21.0 version to verify the hypothesis. As a result, the following conclusions were obtained. First, we discovered that the leader's super leadership had a positive impact on the athlete's self-leadership, psychological empowerment, and sport commitment. Second, we found that the athlete's self-leadership had a positive effect on psychological empowerment, sport commitment, and performance. Third, we found that athlete's psychological empowerment had a positive effect on sport commitment and performance. Fourth, we found that the athlete's sport commitment had a negative effect on performance. Therefore, this study has reminded us about importance of psychological empowerment and sport commitment for explaining the relationship between leadership type and performance perceived by Taekwondo athletes, and might contribute to the theoretical discussion of variables related to athletes' performance.

• Journal of information and communication convergence engineering
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• 제21권4호
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• pp.337-345
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• 2023

In this study, we formulated a method that evaluates Taekwondo Poomsae performance using a series of choreographed training movements. Despite recent achievements in 3D human pose estimation (HPE) performance, the analysis of human actions remains challenging. In particular, Taekwondo Poomsae action analysis is challenging owing to the absence of time synchronization data and necessity to compare postures, rather than directly relying on joint locations owing to differences in human shapes. To address these challenges, we first decomposed human joint representation into joint rotation (posture) and limb length (body shape), then synchronized a comparison between test and reference pose sequences using DTW (dynamic time warping), and finally compared pose angles for each joint. Experimental results demonstrate that our method successfully synchronizes test action sequences with the reference sequence and reflects a considerable gap in performance between practitioners and professionals. Thus, our method can detect incorrect poses and help practitioners improve accuracy, balance, and speed of movement.

• The Journal of Korean Physical Therapy
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• 제34권6호
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• pp.298-303
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• 2022

Purpose: The purpose of this study was to figure out how PAP (Post-Activation Potentiation) phenomenon affects short-term performance efficiently. Methods: This study was conducted with 18 Taekwondo athletes and 16 healthy adults. By using isokinetic dynamometer, two different intervention, TDP (Top-down program) and BUP (Bottom-up program), were performed to measure isokinetic parameter; (peak torque: PT, total work: TW, average power: AP, and average torque: AT) of knee extensor for intragroup, intergroup comparison and two-way ANOVA. Results: The Taekwondo athletes group showed statistically significant differences in all isokinetic parameters PT, TW, AP, and AT after TDP (p<0.05). However, in the healthy adult group, the difference in isokinetic parameters according to the exercise sequence was not statistically significant. (p>0.05). PT and TW at TDP were statistically significant (p<0.05) when the rate of change in TDP and BUP was compared and analyzed considering the difference in physical ability between the Taekwondo athlete group and the healthy adult group. However, AP and AT were not statistically significant. Finally, when examining the interaction between the two groups and two exercise sequence according to isokinetic parameters, only TW (p<0.05) showed a statistically significant interaction, while PT (P=0.099), AP (P=0.103), and AT (P=0.096) did not. This study suggests that short-term performance can be improved through the PAP phenomenon when TDP is applied to the Taekwondo group. Conclusion: According to our result, for Taekwondo athletes, if the goal is to improve short-term performance just before the main game, we suggest a training program through TDP.

• 한국운동역학회지
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• 제25권3호
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• pp.275-281
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• 2015

Objective : In order for Taekwondo athletes to perform destructive kicking performance, they are expected to have Taekwondo-specific muscle properties such as high muscle strength and power. The purpose of this study was to investigate the joint angle-dependent force-producing property of Taekwondo athletes' knee extensor muscles, which is one of the primary muscle groups involved in kicking performance. Method : Ten Taekwondo male athletes (age: $19.9{\pm}0.7yrs$, height: $180.6{\pm}6.2cm$, body mass: $75.9{\pm}8.9kg$, career: $9.2{\pm}2.9yrs$.) and 10 healthy male non-athletes (age: $26.3{\pm}2.6yrs$, height: $174.2{\pm}4.8cm$, body mass: $72.8{\pm}7.7kg$) participated in this study. Subjects performed maximum isometric knee extension at knee joint angles of $40^{\circ}$, $60^{\circ}$, $80^{\circ}$, and $100^{\circ}$ (the full knee extension was set to $0^{\circ}$) with the hip joint angles of $0^{\circ}$ and $80^{\circ}$ (the full extension was set to $0^{\circ}$). During the contractions, knee extension torque using an isokinetic dynamometer simultaneously with muscle activities of the rectus femoris (RF), and the vastus lateralis (VL) and vastus medialis (VM) using surface electromyography were recorded. Based on the torque values at systematically different knee-hip joint angles, the joint torque-angle relationships were established and then the optimal joint angle for the knee extensor was estimated. Results : The results of this study showed that the isometric knee extension torque values were greater for the Taekwondo athletes compared with the non-athlete group at all hip-knee joint angle combinations (p<.05). When the hip joint was set at $80^{\circ}$, the peak isometric torque was greater for the Taekwondo athletes compared with the non-athlete group ($313.61{\pm}36.79Nm$ and $221.43{\pm}35.92Nm$, respectively; p<.05) but the estimated optimum knee joint angles were similar ($62.33{\pm}5.71^{\circ}$ and $62.30{\pm}4.67^{\circ}$ for the Taekwondo athletes and non-athlete group, respectively). When the hip joint was set at $0^{\circ}$, the peak isometric torque was greater for the Taekwondo athletes compared with the non-athlete group ($296.29{\pm}45.13Nm$ and $199.58{\pm}25.23Nm$, respectively; p<.05) and the estimated optimum knee joint angle was larger for the Taekwondo athletes compared with the non-athlete group ($78.47{\pm}5.14^{\circ}$ and $67.54{\pm}5.77^{\circ}$, respectively; p<.05). Conclusion : The results of this study suggests that, compared with non-athletes, Taekwondo athletes have stronger knee extensor strength at all hip-knee joint angle combinations as well as longer optimum muscle length, which might be optimized for the event-specific required performance through prolonged training period.

• 한국운동역학회지
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• 제18권1호
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• pp.117-127
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• 2008

본 연구는 개발된 태권도화에 따른 태권도 돌려차기와 몸돌려 후려차기시 기계적 마찰력과 태권도 수행력에 대하여 연구하는데 목적이 있다. 본 연구를 위하여 A.F.T.S.(Automated Footwear Testing System)과 태권도 수행력 테스트를 실시하였으며 착화감에 대한 설문을 조사하였다. 본 실험의 결과 태권도화 종류에 따라 기계적 마찰력은 유의한 차이를 보였으며, 돌려차기시 최대 자유모멘트의 통계 결과값은 p=.011 이었고, 최대 족저압에 있어서 타입 A 태권도화와 타입 B 태권도화도 사이에 있어 유의한 차이를 보였다. 착화감 설문 결과 5가지 항목에 있어 타입 A와 타입 B 태권도 사이에 있어 유의한 차이를 보였지만 타입 B와 타입 C 태권도화에 있어서는 모든 항목에서 유의한 차이를 보이지 않았다. 태권도화별 기계적 마찰력에서 유의한 차이를 보인 반면 수행력에 있어서는 영향을 미치지 못하는 것으로 판단되며, 설문 결과와 수행력 사이에 있어서도 관계가 없는 것으로 나타났다. 본 연구를 통하여 임상 실험 결과와 기계적 마찰력 정도가 태권도 수행에 영향을 주는지 여부와 훈련 시 부상 방지 및 수행력을 향상시키는 태권도화의 생체역학적 설계 및 현 개발 시제품에 대한 후속제품개발에 도움을 주고자 한다.

• 문화기술의 융합
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• 제7권3호
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• pp.415-424
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• 2021

본 연구는 성인 여성들을 대상으로 온라인 태권도 시범 공연으로 인한 플로우(Flow) 경험이 관여도 및 재관람 의도에 미치는 영향을 파악하고, 온라인 태권도 시범 공연의 활성화 및 관람객 증진, 성인 태권도 수련생 증진을 위한 실질적 자료를 제공하고자 한다. 이에 국기원 태권도 시범단이 공연한 '하이킥' 온라인 태권도 시범 공연을 관람한 관람객 들을 모집단으로 선정하였고, 결과와 논의를 통한 결론은 다음과 같다. 첫째, 여성 관람객들의 태권도 경험 유무로 인한 플로우, 관여도, 재관람의도의 차이는 플로우 하위요인 중 즐거움 요인을 제외한 주변의식, 시간왜곡, 관여도. 재관람의도 요인에서 차이가 있는 것으로 나타났다. 둘째, 온라인 태권도 시범 공연의 플로우(Flow) 요인 중 주의집중, 즐거움, 시간왜곡 요인은 관여도에 긍정적인 영향을 미친 것으로 나타났다. 셋째, 온라인 태권도 시범 공연의 플로우(Flow) 요인은 재관람의도에 긍정적인 영향을 미치는 것으로 나타났다. 넷째, 온라인 태권도 시범 공연의 관여도는 재관람의도에 긍정적인 영향을 미치는 것으로 나타났다.

• 대한의생명과학회지
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• 제16권4호
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• pp.287-292
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• 2010

The purpose of this study was to investigate the effects of soybean peptide on lipid peroxidation, antioxidant enzyme and inflammatory cytokines in male high school taekwondo players. The subjects were divided into 2 groups, which were a soybean peptide intake group (S-peptide, n=13) and a placebo intake group (Placebo, n=10). The s-peptide group took 4 g a day of soybean peptide for 4 weeks. Blood samples were taken from the antecubital vein at before taekwondo performance, after 2 and 4 weeks taekwondo performance. The plasma was analyzed for the antioxidant enzyme activity factor, lipid peroxidation and cytokines. As a result, the s-peptide group decreased lipid peroxidation (MDA) and increased the antioxidant enzyme activity factor (TAS and CAT). The plasma concentration of inflammatory cytokines, IL-6 and TNF-${\alpha}$ were significantly decreased in the s-peptide group after 4 weeks and showed significant differences between the groups. These results indicate that the intake of soybean peptide was positively improved on antioxidant enzyme and inflammatory cytokines in taekwondo player.

• 한국멀티미디어학회논문지
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• 제16권12호
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• pp.1439-1445
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• 2013

We present a Taekwondo training system using a hybrid sensing technique of a body sensor and a visual sensor. Using a body sensor (accelerometer), rotational and inertial motion data are captured which are important for Taekwondo motion detection and evaluation. A visual sensor (camera) captures and records the sequential images of the performance. Motion chunk is proposed to structuralize Taekwondo motions and design HMM (Hidden Markov Model) for motion recognition. Trainees can evaluates their trial motions numerically by computing the distance to the standard motion performed by a trainer. For motion training video, the real-time video images captured by a camera is overlayed with a visualized body sensor data so that users can see how the rotational and inertial motion data flow.