• Korean Journal of Applied Biomechanics
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• v.12 no.1
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• pp.31-46
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• 2002

The purpose of this research is to provide scientific training guides and the basis for preventing injuries in performing tango backward walk by comparing the effects the height and shape of a heel will have on leg muscles and determining the difference between skilled and unskilled dancers through EMG analysis according to different types of shoes Total eight female athletes were selected for this research. Four with six years of professional dancing experience and another four with one year of dance sports experience. Utilizing the EMG system, rectus femoris, biceps femoris, anterior tibialis, gastrocnemius were measured under different heights (0cm, 5cm, 7cm, 9cm) and shapes (flat, fine, wide) of a heel. Experiments were conducted calculating EMG peak value and muscle load ration under different types of shoes in order to analyze the EMG of leg muscles and Erector Spinae when performing tango backward walk. The result was as follows: 1. The EMG peak value of leg muscles showed significant difference under different heights of a heel in anterior tibialis(p<.001) and gastrocnemius(p.<01) in case of skilled dancers, and in biceps femoris(p.<01) in case of unskilled dancers. 2. The EMG peak value of leg muscles showed significant difference under different shapes of a heel in anterior tibialis(p<.001) and gastrocnemius(p<.001) in case of skilled dancers, and showed no significant difference in case of unskilled dancers. 3. The muscle load ration of leg muscles showed different degrees of muscle contribution between skilled and unskilled dancers. The muscle load ration was in the order of anterior tibialis, rectus femoris, biceps femoris, and gastrocnemius in case of skilled dancers and anterior tibialis, gastrocnemius, biceps femoris, and rectus femoris in case of unskilled dancers.

• Korean Journal of Applied Biomechanics
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• v.20 no.1
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• pp.13-23
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• 2010

The purposes of this study was to investigate the biomechanical influence of the walking shoe with a plate spring in the heel and interchangeable heel cushioning elements. Eighteen subjects walked in three conditions: 1) the walking shoes Type A-1 with a soft heel insert, 2) the Type A-2 shoe with a stiff heel insert, 3) a general walking shoe(Type B). Ground reaction forces, leg movements, leg muscle activity and ankle, knee and hip joint loading were measured and calculated during overground walking. During walking, the ankle is a few degrees more dorsiflexed during landing and the knee is slightly more flexed during takeoff with the Type A shoes. As a result of the changes in the walking movement, the ground reaction forces are applied more quickly and the peak magnitudes are higher. Muscle activity of the quadricep, hamstring and calf muscles decrease during the first 25% of the stance phase when walking in the Type A shoes. The resultant joint moments at the ankle, knee and hip joints decrease from 30-40% with the largest reductions occurring during landing.

• Korean Journal of Applied Biomechanics
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• v.26 no.3
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• pp.315-321
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• 2016

Objective: The aim of this study was to analyze effects of the toe-spring angle of bobsleigh shoes on start speed lap time to develop Korean-specific bobsled shoes suitable for winter environments and for domestic players on the basis of sports science and optimized biomechanical performance. Method: Seven Korean bobsleigh athletes participated in this study, with three pairs of sprint spikes from three companies (Type A, Type B, Type C). To analyze sprint lap time and forefoot bending angle for each shoe, participants were instructed to drag a sled 15 meters from the start line at a maximum sprint. forefoot bending angle was collected by a high speed camera, and lap time speed was measured. Results: Lap time for type B shoes was $3.52{\pm}0.17sec$, type A was $3.55{\pm}0.19sec$, and type C was $3.56{\pm}0.18sec$. Forefoot bending angles were: angle 1, $6.88{\pm}5.55^{\circ}$; angle 2, $9.23{\pm}6.38^{\circ}$; angle 3, $15.56{\pm}5.39^{\circ}$; angle 4, $9.54{\pm}3.85^{\circ}$; angle 5, $9.22{\pm}5.08^{\circ}$; angle 6, $7.66{\pm}6.44^{\circ}$; and angle 7, $4.30{\pm}6.24^{\circ}$ (p<.001). Forefoot bending in angle 3 was as follows: type A, $16.47{\pm}6.01^{\circ}$; type B, $14.30{\pm}4.96^{\circ}$; and type C, $15.90{\pm}5.17^{\circ}$. Conclusion: Hard outsoles and midsoles are better than soft type for reduced start lap time when developing a prototype Korean bobsled shoe.

• Archives of design research
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• v.17 no.2
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• pp.147-156
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• 2004

An enterprise is a basic unit to constitute national economy and a unit of independent production economy to pursue profit based on separation between ownership of production means and labor. Even though price and quantity of production are decided by planned economy in order to survive in the mechanism of market economy, quantity of production and of demands can't be same at all because of consumers' different preferences. An enterprise uses audio-visual media like letters, pictures, and voice in order to grasp consumers' taste, to develop products and to advertise them. Advertising is communication that a company, a non-profit organization or an individual, that is shown in the message of an ad, makes through several media. It is time that a company should appeal its image, not only its products, to consumers as a salesman. Marketing strategy of company identity is to visualize a company's intentions, to formalize its motto, slogan or culture, to build up trust of products and the company in consumers, and then, to have the consumers forever. By the virtue of development of www in 1990s, the media has been expanded to online. Development of www has united the world into a network and the market has been changed to unlimited competition. This paper intends to define the concept and characteristics of web identity and investigates and analyzes how web sites of sports shoes express their identities. In addition, it analyzes influences of multinational companies' web identifies (in Korean version) and of local companies' web identities on local consumers. Through survey, it will analyze the effects of web identity and review its operation.

• Korean Journal of Applied Biomechanics
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• v.29 no.3
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• pp.167-172
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• 2019

Objective: The aim of this study was to investigate the effect of midsole hardness of running shoe on muscle fatigue and impact force during distance running. Method: Ten healthy college recreational runners who were performing distance running at least three times a week participated in this experiment. They were asked to run for 15 minutes in the treadmill at 10 km/h with running shoes having three different types of midsole hardness (Soft, Medium, Hard). EMG signal and insole pressure were collected during the first and last one minute for each running trials. Data were analyzed using a one-way analysis of variance (ANOVA) with repeated measures. Results: Midsole hardness did not affect the consistency of stride length. For the median frequency of the EMG signal, only VL was affected by midsole hardness; that of medium was greater than other midsoles (p<.05). The loading rate of impact forces increased by midsole hardness (p<.01). Conclusion: Although soft midsole could attenuate impact forces at heel contact, it might have a negative effect on the fatigue of muscle which could decelerate the body after heel contact. Therefore, it is necessary to select the optimum hardness of midsole carefully for both reduction impact forces and muscle fatigue.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.05a
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• pp.134-140
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• 2003

The national standard physique research of Korea is being conducted every 5∼6 year term after its first research was started 1979, the fourth research was conducted in 1997. The result of the national physique research was reflected in manufactured goods design of allied industries such as clothing , shoes, furniture. In this thesis, we measured anthropometry value for every bodily figurative classification after dividing users according to gender, age, bodily figure using the result of the national standard physique research. We constructed 3D character through the process of analyzing interrelation of measured anthropometry and measuring representative category. For the process for organization, we measured anthropometry which can express sports action of golf, tennis and etc effectively. We made it by presenting measurement which is able to form each type of 3D character after the category was decided. Quantitative and objective valuation for posture and action became possible by developing visible information offer and posture action analysis protocol in theoretical approach for analysis for analysis of posture and action in sports.

• Journal of the Korean Home Economics Association
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• v.35 no.3
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• pp.307-318
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• 1997

I observed the important factors of clothing transition - Changes of Korean clothing & reception of Western-style dress - through the survey of the clothing of girl students during the period of enlightenment(1900∼1945) in this study as follows. 1) Stop to use of a long hood an old-fashioned woman shawI(once used to cover th head and upper body when going out). 2) Appearance of same colored Korean costume of the upper and lower sides. 3) Appearance of a short seamless one-piece skirt with a pair of shoulder girdles. 4) Appearance of school uniform, upper white lower black-Korean costume. 5) Appearance of school uniform, Western style. 6) Appearance of sports-wear. 7) Reformation of under-wear. 8) Appearance of short hair. 9) Appearance of socks & stockings and shoes.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.339-341
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• 2022

이 연구는 현 트렌드에 발맞추어 손상예방, 트레이닝 수업에 보다 양질의 피드백을 제공하여 보다 효율적이고 효과적인 교육프로그램 개선 및 개발하는데 목적이 있다. 부하가 증가될수록 우측 외측광근, 대퇴이두근과 좌측 내측광근, 대퇴이두근, 비복근이 활성도과 증가하였으며, 발의압력은 앞쪽이 증가하였으며 COG 좌/우 안정성이 감소하였다. 초보자들은 자신의 동작이 정확히 인지하고 수행하는지 어려움을 가지고 있으며 선수와 숙련자들은 강력한 근육을 바탕으로 보상작용을 수행해서 정확한 동작을 만들어 결국 근육의 불균형으로 인한 손상을 유발하기도 한다. 이러한 문제점을 웨어러블 기기를 이용하여 즉각적인 피드백을 제공할 수 있어 효율적인 운동지도를 할 수 있을 것으로 생각된다.

• Korean Journal of Applied Biomechanics
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• v.20 no.1
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• pp.91-99
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• 2010

The purpose of this study was to the kinetic variables effects from the use of arch support inserts on low-arched people. We selected 10 people for the research and separated them into 2 groups, 5 people for the normal arched group and 5 people for the low arched group. Each group wear shoes which have a 3 step convertible arch support (level 0, level 2, level 5) and we measured their foot pressure and 3D motion analysis data. As a result, we found that the mean pressure at the heel of the low arched group was decreased when using the arch supports. The arch support induced the correct grounding area for the foot and dispersion of foot pressure. 3D motion analysis found that as the height of the arch support was increased, the movement of the Y-axis(inversion-eversion) was increased to relieve the shock to the heel. The arch support insert limited the range of motion(ROM) of the Z-axis(abduction-adduction) of the low arched person's ankle joint and prevented ankle injury caused by the excessive eversion when walking. Low arched people are seen to be easily tired due to the ineffective shock absorption of the knees and abnormal walking motion. In order to improve the problems, a 3 step convertible arch support(level 5) insert would improve the low-arched people's walking ability. In other words, the low arched people should be expected to walk as well as normal arched people when they wear shoes with the arch support insert.

• The Research Journal of the Costume Culture
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• v.11 no.6
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• pp.852-866
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• 2003

The purpose of this study is to analyze how the women's fashion with the androgynous image(fashion item, adornment) which has appeared on our specialized fashion magazine from 1986 through 2000. As a result of this study I drew the following conclusion. First, masculine image led the market in the first stage of mid 1980 in a men's wear oriented trend that the woman wear masculine style jacket, pants and blouse. In hair style, the short hair of the masculine image was used habitually but the make-up was tend to be made heavily. The ambivalence of the sex was also showed up by expressing the feminine image on the masculine image using the accessories like necklace, earing and bracelet. Second, unlike the first stage, it showed that more and more feminine image was accepted in the second stage of early 1990. The jacket, blouse and pants were rooted as the basic item in women's fashion. The feminine style of long hair and natural make-up with the androgynous image were increased. Third, in the third stage of the late 1990, the fashion items to the comfortable dress of light weight as the life style pursuits the activity and convenience. The feminine image were appeared naturally with a long hair style and natural make-up with the androgynous image. The remarkable features in the fashion accessories were that boots and low shoes were preferred by the increase of the masculine image shoes and the sneakers were seen a lot by the effect of the sports boom.