• 대한기계학회논문집A
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• 제32권1호
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• pp.83-90
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• 2008

Taekwondo is a martial art form and sport that uses the hands and foot for attack and defense. Taekwondo basic motion is composed of the breaking, competition and poomsea motion. In the side kick among the competition motion, the impact force is larger than other kinds of kicks. The side kick with the front foot can be made in two steps. In the first step, the front foot is stretched forward from back stance free-fighting position. For the second step, the rear foot is followed simultaneously. Then, the kick is executed while entire body weight rests on the rear foot. In this paper, impact analysis of the human model for hitting posture is carried out. The ADAMS/LifeMOD is used in hitting modeling and simulation. The simulation model creates the human model to hit the opponent. As the results, the dynamic analysis of human muscle were presented.

• 국제물리치료학회지
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• 제10권2호
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• pp.1774-1778
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• 2019

Background : Methods of wearing a baby carrier have suggested; however, there have been no studies suggesting ideal ways. Objective : To investigate muscular fatigue and balance of the waist during baby carrier are worn on the front, the side, and the back of the body. Design: Randomized controlled clinical trial (single blind) Methods : The subjects of this study were 20 healthy men and women in their 20s, who underwent tests of muscular fatigue and balance of the waist bones based on types of wearing baby carrier. Electromyogram (EMG) patches were attached to the L2 and the L4 for testing muscular fatigue, while a device for measuring proprioceptive senses was used to assess balance ability. The measurements were performed before wearing the baby carrier and after 30 minutes of normal walking. The methods of wearing the baby carrier included wearing on the front, the side, and the back of the body. Results : The time taken to adjust the balance was shorter than other types of wearing during the baby carrier were worn on the side, and the ratio of lumbar flexion and relaxation was shown insignificant. Conclusions : These results suggested that wearing the carriers on the side was most effective on reducing fatigue and enhancing balance ability of the waist.

• Animal Systematics, Evolution and Diversity
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• 제22권2호
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• pp.223-229
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• 2006

Two litonotid ciliates collected from the freshwater habitats in Korea were identified as Loxophyllum meleagris ($M\ddot{u}ller$, 1773) and Siroloxophyllum utriculariae (Penard, 1922). The description was based on the observation of living and protargol impregnated specimens, and biometric analysis. Their diagnostic characteristics are as follows. L. meleagris; $163-480\times80-100{\mu}m$ in vivo, body shape lancet or knife-like; dorsal margin with 10-19 extrusome warts; 8-35 macronuclei nodules, like a string of bead; 16-21 somatic kineties on right side (including perioral kinety 2, 3) and 6-11 on left side (including perioral kinety 1); 1 contractile vacuole located at posterior part at diastole stage, extending along the dorsal margin toward anterior end with a single long narrow canal. S. utriculariae; $110-170\times78-150{\mu}m$ in vivo, body shape lancet like; dorsal margin without extrusome warts; 2 macronuclei, spherical; 12-19 somatic kineties on right side, 3-7 on left side (including perioral kinety 1); 2-3 contractile vacuoles, first one located anterior ventrally, second one located posterior dorsally and last one located near posterior end of cell.

• 대한정형도수물리치료학회지
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• 제12권2호
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• pp.21-25
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• 2006

Objective: The purposes of this study are to provide fundamental data and a rehabilitation program in physical therapy. It has been operated by 30 male college students for lumbar isokinetic exercises. Method : Subjects have been carried out in an experiment by Biodex system operating isokinetic torso rotation. This performance was activated by left rotation after right rotation repeatedly. Results: 1. The mean peak torques at $60^{\circ}$/sec were $95.6{\pm}20.62$ (Rt) and $93.84{\pm}18.41$ (Lt). 2. The mean peak torques/body weight at $60^{\circ}$/sec were $69.28{\pm}28.31$ (Rt) and $67.07{\pm}27.04$ (Lt). 3. The total works in right side at $60^{\circ}$/sec and $180^{\circ}$/sec were $492.21{\pm}92.37$, $1294.97{\pm}278.96$ and in left side at $60^{\circ}$/sec and $180^{\circ}$/sec were $515.78{\pm}109.47$, $1443.74{\pm}329.67$. 4. The work to body weight ratio at $60^{\circ}$/sec was $78.30{\pm}32.37$ (Rt) and $79.93{\pm}37.30$ (Lt). 5. The average powers in right side at $60^{\circ}$/sec and $180^{\circ}$/sec were $76.75{\pm}16.69$, $117.19{\pm}29.94$ and in left side at $60^{\circ}$/sec and $180^{\circ}$/sec were $78.54{\pm}18.58$, $125.39{\pm}32.90$. 6. The work fatigue at $180^{\circ}$/sec was $21.76{\pm}14.82$ (Rt) and $19.66{\pm}26.23$ (Lt). Conclusion: In right side and left side, there was no significant difference in peak torque. peak torque/body weight, work to body-weight ratio, average power of trunk rotators at $60^{\circ}$/sec(p<0.05). However there was a significant difference in the total work of trunk rotators at $60^{\circ}$/sec(p>0.05). Also there was a significant difference in the average of trunk rotators at $180^{\circ}$/sec(p>0.05).

• Journal of Acupuncture Research
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• 제26권2호
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• pp.171-179
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• 2009

Objectives: The purpose of this study was to investigate the changes of obesity, blood composition and physical ability in obese children on body weight control program. Methods : The body weight control program included exercise, nutrition education and auricular acupuncture was performed 4 times a week during 12 weeks. 32 obese children whose body fat ratio were over 30% participated in this study. Measuring materials were body composition(weight, muscle mass, fat mass, fat ratio, BMI), physical measurement(height, waist circumference, chest circumference, hip circumference), physical ability(grip strength, sit-ups, sitting trunk flexion, sit-down stand-up test, standing long jump, opened eyes foot balance, side step), blood composition(WBC, Hb, ESR, Total Cholesterol, TG, GOT, GPT, BUN, Creatinine, Glucose) and survey(changes of eating habits, changes of living habits, knowledge of obesity, self-confidence, self-esteem). Results : From the results, positive changes were made in BMI, height, waist circumferences, chest circumferences, hip circumferences, sit-ups, sitting trunk flexion, sit-down stand-up test, standing long jump, opened eyes foot balance, side step, Hb, ESR, GOT, GPT and changes of eating habits through the body weight control program. Conclusions : This results suggest that body weight control program including exercise, nutrition education and auricular acupuncture may be effective for helping obese children.

• 복식문화연구
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• 제29권4호
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• pp.471-487
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• 2021

The purpose of this study was to analyze changes to body measurements and silhouettes after wearing an early 19th century women's corset. Two types of corsets were tested. Changes in body size and silhouette were compared based on the levels of tightening strength of the corset. The tightening strength was adjusted in 4 steps by making the length of back fastening string 10-40 cm shorter than the standard. The silhouette was compared with the front silhouette and the side silhouette. The results were as follows. After wearing the experimental 19th century corsets, the chest circumference and front interscye length increased. However, the chest circumference did not increase proportionally to the tightening strength. The underbust circumference, waist circumference, and back interscye length also decreased. The waist width was decreased to create a slim front silhouette. The change in the body silhouette differed depending on the style of the experimental corset. The experimental corset made with the six-piece torso pattern changed the posture so that the shoulders were pulled back and the chest was pushed forward. The experimental corset with the side bodice pattern resulted in the subject's shoulders reclining backward and the chest and abdomen extending forward. The results of this study show that women's body sizes and silhouettes could be changed by wearing the early 19th century corsets, but the changes in body size and silhouette vary depending on the wearer's individual body type or corset style.

• PNF and Movement
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• 제11권2호
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• pp.127-134
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• 2013

Purpose : The purpose of this study of normal elderly and stroke patients by comparing the dominant side and recessive side was to evaluate the differents between each Methods : Thirty-two elderly participated in this study. They were classified two groups: stroke patients group and the normal elderly group. Outcome measures were: general characteristics and BMD. General characteristics included age, height, weight and body mass index. BMD was represented in the osteoporosis index, T-score and Z-score. The measurements of bone mineral density were evaluated on the calcaneus region of the dominant and recessive side, using OsteoPro. The data analyzed using SPSS 17.0 software and the Paired-sample T-test and the Independent-sample T-test Results : OI, T-score, Z-score showed no significant differences between dominant side and recessive side in normal elderly group. But stroke patients group showed OI, T-score, Z-score significant differences between paretic side and nonparetic side. Change score subtracted recessive side from dominant side was significant differences between stroke patients group and normal elderly group. Conclusion : There is positive relationship between physical activity and BMD in stroke patients. Therefore, improved physical activity can have a beneficial effect by reducing osteoporosis in stroke patients, considering a positive relationship between physical activity and BMD.

• 자동차안전학회지
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• 제3권2호
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• pp.34-41
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• 2011

Side collisions (or side crash) account for 51.6% of all car to car accidents occurred in 2010. It is necessary to analyze those vehicles' structure deformation and passengers' injuries in the side collisions. A moving barrier (950kg) is currently used in the KNCAP side impact test. However, in order to enhance a passengers' safety in the side collisions, we introduce an AE-MDB (1500kg) which provides more severe conditions for this test. In this study, the test results using both barriers are compared and analyzed.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2001년도 춘계 학술대회논문집
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• pp.21-29
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• 2001

For rapid and abrupt control of a missile in supersonic flight, side jet on a missile body is found to be a useful devise as evidenced by recent missile development at several nations. The magnitude of the side jet and the duration of it decide the level of control of such a missile system. In this paper, the aerodynamic characteristics of the side jet devise itself are examined in terms of key parameters such as the side jet nozzle contour, the chamber pressure and temperature. Specifically attention is focused on the effect of the chamber shape between the straight nozzle and the bended nozzle by 90 degrees. The flow properties as well as the thrust level are compared between the two shapes. Particular attention is paid at the way the nozzle is bended at the joint. Effects of the length and the divergence angle of the nozzle on the thrust magnitude are also quantified among the three different side jet nozzles.

• 동의신경정신과학회지
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• 제11권1호
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• pp.97-102
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• 2000

In the study of psychosomatic disorders caused by Qi-experience, the results were as follows: 1. People are becoming more and more interested in qigong, but sometimes peple are suffer from side effects from Qi-experience. In oder to treat this side effects of qigong, it is important to control Qi unbalance. And this is associated with the mechanism of stress-reaction. 2. The causes of side-effects were tension of body and mind, concentration of head, enduring breath, and wrong qigong-method, etc. 3. The symptoms of side-effects were headache, flushing face, chest discomfort, neck stiffness, indigestion, etc. 4. The theraphy of side-effects is herb-medicine, acupuncture, moxibution, and more effective by application of psychotheraphy, relaxation-theraphy, music, aroma, taping.