바른 姿勢에 대한 力學的 조사 연구 : 바른 자세에 대한 역학적 조사 연구

서국웅 부산대학교 1980 論文集: 自然科學篇 Vol.29 No.-

釜山市內 직장 Tinnis 선수들의 姿勢 및 기본, 전문기술에 대한 力學的인 조사 분석

徐國雄,朴順子 부산대학교 사범대학 1979 교사교육연구 Vol.6 No.2

The analysis of the amater tennis players in Busan area having the attitudes and skills in playing a game, the results are as follows. Ⅰ) Of the tennis players in Busan area, 62.55 per cent begin the tennis on thirties. Ⅱ) Their career of the tennis is considerable, Five-year-careers are 24.26% over six years 30.21%. Ⅲ) On set-up for preparation, normal set-up is 57.45 per cent. Ⅳ) When they get ready for playing, the players "flat-footed" are 63.83 per cent. Ⅴ) On set-up for preparation, the direction of foot is outside, which is abnormamly 40.85%. Ⅵ) On their groundstrokes, the 78.30% take almost eastern grip. On forehands, drive is 57.8%, on backhands slice is 79.15%. Ⅶ) On shorts, the movement of momentum is the total of 79%, polo-throw stands at 90 per cent. Ⅷ) On volleys, the players with leg-crossed 67.66%, open-stance 32.34%. The direction of body with facing the opponent represents 72.77%. It is necessary to correct this attitude. Ⅸ) On volleys, slice is the total of 49.26%, which is most frequent. Ⅹ) The 60.00% smash mostly without swing and the hitting position is over the head, which represents 49.79%. The strength is too big, which stands at 57.87% slice 41.28%, flat 58.72%. ⅩI) On serve, slice is 56.60%, and the 61.27% have the lite movement of momentum. After service, the 91.06% don't rush the net, and to commit "foot-fault" is 68.94%. XII) When the partner take an error during the doubles match, the 47.36% find fault with him.

運動選手들의 心肺能力 特性에 關한 硏究

徐國雄,朴順子 부산대학교 1984 자연과학논문집 Vol.38 No.-

In order to compare with the characteristics of cardiopulmonary ability. This study was proceeded. The subjects were 20 (ball game athletes (7), gymnastics athletes (6), and nonathletes (7) whose are students in pusan National University. Before and after given an exercising work load, we measured the Forced Vital Capacity (F.V.C), Tidal Volume (T.V), Maximal voluntary ventilation (M.V.V), Respiratory Frequency (R.F), Ventilation Volume (V.V), Forced expiratory flow 25-75% (F.E.F 25-75%), Systolic and Diastolic Blood Pressure (S.B.P and D.B.P) and Heart rate(H.R). The results were as follows. 1. Before exercise between athletes and nonathletes, the athletes is shown significantly higher than nonathletes in the F.V.C (P<0.05), F.E.F 25-75% (P<0.01) and H.R (P<0.001) the athletes is shown significantly (P<0.05) lower than the nonathletes in T. V, the athletes is shown higher than nonathletes in R.F and M.V.V, but there is not significantly difference and, the athletes is shown lower than nonathletes in S.B.P, D.B.P, and V.V, but there is not significantly difference. 2. After exercise between athletes and nonathletes, Athletes is significantly (P<0.05) shown lower than nonathletes in the H.R, significantly (P<0.1) shown higher than nonathletes in the F.V.C and F.E.F.25-75% and shown higher than nonathletes in the T.V, R.F, V.V, S.B.P, and D.B.P, but there is not significantly difference. 3. Between before and after exercise is significantly (P<0, 001) shown higher than before exercise in the T.V, V.V, and S.B.P, is significantly (P<0.01) shown higher than before exercise in the R.F, and H.R and, is higher before exercise in F.V.C, F.E.F 25-75% and D.B.P but there is not significatly difference. 4. Among ball game athletes Gymnastics athletes and nonathletes, before exercise, Ball game athletes is shown higher than gymnastics athletes and nonathletes in the F.V.C, F.E.F 25-75%. R.F, M,V, V,S. B.P, and D.B.P and, is shown lower than nonathletes in the V.V, H.R, and T.V. But the gymnastics athletes is shown higher than nonathletes in the F.V.C, F.E.F 25-75% and R.F, but is shown lower than ball game athletes in the F.V.C, F.E.F 25-75% and R.F, and, is shown lower than nonathletes in the T.V, V.V, M.V.V, H.R, S.B.P and D.B.P. 5. Among ball game athletes, Gymnastics athlete and nonathletes, after exercise, ball game athletes is shown higher than gymnastics athletes and nonathletes except H.R. in the all measured values Gymnastics athletes is shown lower than ball game athletes and nonathletes except F.V.C, in the all measured values.

Tennis Drive Strokes의 해부학적 역학적 요인 분석 연구 : forehond, Backhond Drive strokes를 中心으로 puting the first importance to Forehand and Backhand Drive Stork

徐國雄 부산대학교사범대학 1977 교사교육연구 Vol.4 No.2

The scientific training should be put on analyzing the anatomical and kineticmain factor exactly for the strong and exact Forehand Drive Stroke and Backhand Drive Strokes. The results of analysis for kinetic main factor are as follows: 1) The grip which can perform the Forehand Drive Stroke well is a grip near to the western, and the grip which can do the Backhand Drive Stroke well should be the back grip of the eastern. 2) the center of gravity should be broght down and the surface of base should be stable for the good Drive Stroke. 3) The kinetic friction is very important when performing the Drive Stroke as a main cause of stabilities. 4) Back swing, Forward swing and Follow throw should be performed, making good use of the principle of inertia. 5) The Drive Stroke had a stability and it makes other err in his estimate and slso makes timing, volley and smashing difficult. 6) the principle that gives impact to the object works, namely if the strong spped is needed, the rapid swing should be made when making stroke and the arm should not be placed near to the body, and the heavy racket should be carried, and the modulus of elasticiry of the vall and cut should be high and the wrist grasping the racket must be strong.

蹴球競技의 得點要因 分析硏究

徐國雄,鄭容敏 부산대학교사범대학 1984 교사교육연구 Vol.9 No.2

In order to know every factors related to the scores in soccer, he conclusion which is as follows were derived from the analysis of the score books obtained at 215 games form April, 1983 to September, 1984, middle school, high school college, the general, and international games. 1. The means of the scores were 2.25 goals per games. 2. The successive rates of the shooting made scores were 15.33%. 3. The positions of the scorers were shown as F.B.(11.57%), L.K(20.25%), F.W(68.18%). 4. The time of scores made: the times scores made were shown the similar form the beginning of the first half to the last phase of the second half and the second period (53.89%) was shown the scores more than the first period(47.11%). 5. Circumstances of the scores made: Circumstances of the scores made was shown of follows by turn; The first, centering of from the outside(24.69%), the second, Assist at the around penalty area (8.88%), the third, during confused fight before the goal area(8.06%), the fourth, dribble by oneself(8.06%), the fifth, Middle range distance shooting from outside of the penalth area(7.02%). 6.The scores made by the heading were shown 14.67% of all scores. 7. The successive rate of the score made by corner kick was 2.37% and was 6.82% of all scores.

運動選手들의 全身反應時間에 關한 硏究

徐國雄 부산대학교 1983 자연과학논문집 Vol.36 No.-

This study was tested and evaluated the whole body reaction time with 165 athletes(track and field event (12), Gymnastics (12), Tae-Kwon-Do (22), Basketball (12), Judo (19), Wrestling (21), Soccer (18), Handball (14), Volleyball (12) and Rugby (23)). The test was proceeded from September 1, 1983 to September 30, 1983. The results were as follows. 1. In the total athletes, the mean of the whole body reaction time was shown as follows. 0.3212±0.0403 (forward), 0.323±0.0390 (backward), 0.3314±0.0452 (left), 0.3318±0.0377 (right), and 0.3088±0.0367 (jump) under the light stimulus. 0.3443±0.0441 (forward), 0.3461±0.442 (backward), 0.3600±0.0448 (left), 0.3562±0.0485 (right) and 0.3383±0.0472 (jump) under the tone stimulus. 2. In the total mean time of the whole body reaction between the athletes, Generally the whole body reaction time of the handball players, the Tae-Kwon-Do athletes and the Track and field athletes was faster than any other athlete under the light tone stimulus. and, The whole body reaction time of the wrestling athletes and Rugby athletes was faster than any other athlete under the light stimulus. 3. The whole body reaction time of the match game athletes was faster than that of the ball game athletes under the light stimulus. and, Toward the forward direction and at the Jump. the whole body reaction time of the ball game athletes was faster than that of the match game athletes under the tone stimulus. 4. The whole body reaction time of the Handball athletes was faster than that of Judo athletes under the light and tone stimulus. and, toward all of directions except toward the backward and left direction. The T Value between the two groups was shown a very significant difference under the light stimulus. 5. The whole body reaction time of the Tae-Kwon-Do athletes was faster than that of the soccer athletes under the light-tone stimulus. toward the backward, the right, the forward direction and at the Jump, The T value between two groups was shown a very significant difference under the light stimulus. In addition, toward the left and the right direction, the T value was shown a very significant difference under the tone stimuli. 6. In the total athletes and the ball game athletes, A little correlation was shown between the body weight and the reaction time occurred by the light and the tone stimuli. The level of the significance between two items was shown as a very significant.

효과적인 하중운반체계에 대한 생체역학적 연구

서국웅,이중숙,김용재,이훈식 부산대학교 사범대학 1994 교사교육연구 Vol.29 No.-

The purpose of this study was to get the quantitative data of effect of two different load carrying system on Kinematics and Kinetics. The subjects for the research were 2-adults. The mechanism of each load carrying pattern was measured by a motion analyzer a forceplatform and E.M.G system. The conclusion were as follow from Kinematics Variable's and Kinetics Variables. 1. It was not effected at the vertical reaction force(Fz) of left, right foot according to the big value of the 1st peack of 10kg, 15kg fore, back-pack carrying system, 20kg, 30kg back-pack carrying system in walking. But, it was effected at the vertical reaction force(Fz) on 30kg back-pack carrying system in walking. 2. It was not effected at the Anterior-Posterior reaction force(Fx) of left, right foot according to high value of the 1st peack on 10kg, 15kg fore, back-pack carrying in walking. But, it was effected on the 20kg, 30kg only back-pack carrying system in walking. 3. It was effected at the legt-right reaction force(Fy) of left-right foot according to the big value of the 2nd peak on 10kg, 15kg fore-backpack carrying system in walking. It was more effective than 20kg, 30kg back-pack carrying system in walking. There was not disorder force(Fx) on 10kg, 15kg fore-backpack carrying system in walking. 4. Analysis of computer graphic, on the pack carrying system in walking. It was efficient in 10kg, 15kg fore-backpack carrying system in walking. But, it was not efficient on 20kg, 30kg backpack carrying in walking. Castrocnemius, Tibialis anterior, Vastus lateralis, Vastus medialis, are stressed to bend their body foreward. So it should be occurred fatigue fastly, injured muscles and joints. 5. Extension analyses and flection angles of the Knee joint and the hip joint on 10kg, 15kg fore-backpack carrying system in walking showed less than on 20kg, 30kg backpack carrying system in walking. It was efficient on the 10kg, 15kg fore-backpack carrying system in walking.

運動選手의 基礎體力 要素간의 相關關係 分析

徐國雄,白永鎬,徐國殷 부산대학교 1983 자연과학논문집 Vol.36 No.-

This study was executed so as to analyze the correlation among the general motor ability. The subjects were 83 man college athletes(42 ball game players and 41 match game athletes) as a experimental groups and 69 non athletes as acomparative groups. The test period was from september 5, 1983 to september 15, 1983. The results were as follows. 1. The actual condition of the general motor ability between the group. (1) In case of ball game athletes. The volleyball players had shown a good scores which was 55.85±8.08 in the trunk extension. Rugby players had shown a good scores which was 9.44±2.55 in the chinning, 255.88±9.62 in the standing broad jump and 7.40±3.62 in the stick test. Handball players had shown a good scores which was 137.00±16.63 in the back strength and 9.84±0.47 in the shuttle run but basketball players had shown a bad scores in the other total items. (2) In case of match game athletes , Tae Kwon Do athletes had shown a good scores which was 240.78±13.00 in the standing broad jump, wrestling athletes had shown a good scores which was 17.93±9.50 in the chining, and 5.19±2.30 in the stick test and Judo athletes had shown a good scores which was 124.92±17.83 in the back strength and 10.18±0.34 in the shuttle run. (3) In case of non athletes, Non athletes had shown a bad scores more than any other athlete. 2. The correlation among the general motor ability between the groups. (1) In case of ball game players, standing broad jump had been shown a little correlation with back strength (r=0.3519), chinning (r=0.4811) and trunk extension (r=0.3665). And it had been shown little correlation with that others. (2) In case of match athletes, Chinning and standing broad jump(r=0.3577) had been shown a little correlation as well as chinning and stick test. Shuttle run and standing broad jump (r=-0.5961) had been shown much higher correlation. (3) In case of non-athletes, Chinning and standing broad jump (r=0.3917) had been shown a little correlation as well as shuttle run and stick test (r=-0.3571). Shuttle run and standing broad jump (r=-0.4918) had been shown much higher correlation. (4) As a whole, Back strength and shuttle run (r=-0.3918) had been shown a little correlation as well as shuttle run and standing broad jump. 3. A regressive equation between standing broad jump and other items among the groups. (1) In case of ball game players, Y=+0.14 X-28.37 had been acquired in the relation with the standing broad jump and chinning (r=0.4811). (2) In case of match game athletes, Y=-0.02 X+13.9 had been acquired in the relation with the standing broad jump and shuttle run (r=-0.5661). (3) In case of non athletes, Y=-0.02 X+15.78 had been acquired in the relation with the standing broad jump and shuttle run (r=-0.4917).

Biolite shoes의 충격력 흡수 효능분석

徐國雄 釜山大學校 附設 體育科學硏究所 1986 體育科學硏究所 論文集 Vol.2 No.-

This experiment was to know the relationship between the kind of material and the absorbing of the impacted force. This study had some problems about the experimental method, the processing data and the experimental equipment. But, this study was considered to contribute to make running shoes and standed on force plate form. The sole material of the running shoes was used two materials. One was P.U rubber(Genard rubber) and the other was E.V.A rubber (Biolite). The impacted force of a Biolite shoes was better than the Genenal shoes.

運動量(Momentum)이동이 경기기록에 끼치는 影響에 關한 硏究 : 垂直路를 中心으로

徐國雄 서울대학교 교양과정부 1974 論文集 Vol.6 No.-

The purpose of this study was to investigate the relationship between record of atheletics and transfor of momentum. The subjects (male 95 female 16) were tested transfor of momentum. The way of test as follows (1) Stand facing a wall with both arms stretched, overhead jump as high as possible and recorded the score. (2) Perform the same jump with the use of the arms starting at a position at the side of the body. Recorded that score. The results show that transfor of momentum effects seriously on the record of atheletics and especially the height is highest coefficient of corretation among physique. In order to develop the record of atheletics, we should try to investigate transofr momentum on all kinds of physical activities.