• 대한정형외과스포츠의학회지
• /
• 제6권2호
• /
• pp.119-121
• /
• 2007

골퍼들의 만성적 견관절 손상은 보고 되고 있지만, 특히, 우성 상지의 급성 손상은 비교적 드문 것으로 알려져 있다. 본 증례는 중년기 여성에서 겨울철 잘못된 스윙 동작으로 발생한 우성 상지의 급성 회전근 개 파열을 보여 주었다. 따라서 겨울철에 골프를 시행하는 것은 근골격계 손상에 주의를 요하며 적절한 준비 운동과 스윙 동작의 개선으로 급성 회전근 개 파열을 예방할 수 있을 것이다.

• 한국운동역학회지
• /
• 제17권4호
• /
• pp.37-44
• /
• 2007

This study compared the Character Studio of 3ds Max and OpenGL to find an adequate modeling method of character animation to be used in motion analysis in the area of motor mechanics. The subject was one male golfer. We obtained the positional coordinates of marks needed by photographing the subject's golf swing motions. Because the method based on the Character Studio used meticulously designed character meshes, it enabled high.level animation but it took a long time in applying physique and demanded the repeated adjustment of each motion data. With the method based on OpenGL, a character completed once could be usable to almost every testee and desired program control was available, but because each character had to be created by making a computer program, it was hard to make characters delicately. Because the method using the Character Studio is actively studied not only in motor mechanics but also in many research areas, it is expected to be more usable in the near future. On the contrary, the method based on OpenGL is easily applicable and allows the convenient use of other mechanical data.

• 대한세포병리학회지
• /
• 제13권1호
• /
• pp.33-37
• /
• 2002

We report two different types of thyroid lymphoma associated with Hashimoto's thyroiditis. Both showed autoantibodies and were compatible with Hashimoto's thyroiditis according to their clinical backgrounds. A 76-year-old female noted a painless, rapidly growing mass in her neck which was diagnosed as diffuse non-Hodgkin's lymphoma, large cell type, after the fine needle aspiration cytology of the thyroid. She underwent chemo-radiotherapy and is free of the disease 10 months after diagnosis. The other patient, a 73-year-old female with a diffuse golfer, was diagnosed on fine needle aspiration cytology as having Hashimoto's thyroiditis. Three years later she developed a hard nodular growth in the both lobes of the thyroid. This was subjected to fine needle aspiration cytology and needle biopsy and was diagnosed as a MALT lymphoma. She refused any treatment and died 12 months after the diagnosis.

• 한국컴퓨터정보학회논문지
• /
• 제11권5호
• /
• pp.53-58
• /
• 2006

본 논문에서는 영상처리 기법을 이용하여 골프 스윙 자동 분석을 위한 특징 추출 방법을 제안하였다. 기존 대부분의 스윙 분석 시스템들이 골프 코치와 같은 전문가가 필요한 반면 제안한 특징 추출 방법을 이용하면 전문가의 도움 없이 중요한 스윙 특징을 추출할 수 있다. 추출한 특징은 어드레싱, 백스윙, 스윙탑, 포워드 스윙, 임팩트, 팔로우쓰루와 같은 키 프레임뿐만 아니라 손, 어깨, 클럽헤드, 발, 무릎과 같은 골퍼의 신체부위와 클럽의 위치까지 포함 한다. 제안한 방법의 효용성을 알기 위하여 스윙영상에 대하여 실험한 결과 제안한 방법이 중요한 골프 스윙 특징 추출에 유용함을 확인하였다.

• 한국운동역학회지
• /
• 제16권2호
• /
• pp.21-24
• /
• 2006

The purpose of this paper is to diagnose the errors by comparing putting motion with the single pendulum pattern applicable to putting in golf skill and order prescription that correct errors of putting. In the modern-day game of golf, putting remains the key to shooting low scores, and the ability to hole putts can turn a good round into a great round A semi-golfer, subject(sex female, age 20yrs, mass 94.3kg, height 1.65m) who has troubles to do putting is chosen. Six cameras, ProReflex MCU240(240Hz) made by Qualisys company is used to capture putting motion and data is processed by QTM(Qualisys Track Manager) and Mathematica 5.0. The result that differentiates the putting and the single pendulum pattern is acquired To make the pattern of subject's putting to the single pendulum pattern quasi-equal, one tries to lower center of mass gradually. As a result of it, one has a similar pattern like the single pendulum Conclusively, to lower C.O.M one orders prescriptions that increase the weight and length of a putter and lower C.O.M subject's segment. Further improvements to the study could be to train a subject according to prescriptions and to monitor putting again. It will probably be necessary to simulate putting motions and to research relations for body shapes and putting patterns in order to establish suitable putting-motions.

• 한국운동역학회지
• /
• 제20권2호
• /
• pp.231-237
• /
• 2010

The moving trajectory of a golf ball is mainly determined by the angles of the clubface and the trajectory of the club shaft. This paper presents a computer program for analyzing the position and angles of the club while the club moves in a circular motion. For this purpose, a mathematical algorithm was developed and implemented on the experimental data(5 m and 10 m carries) using VC++ and OpenGL. A skilled female golfer(174 cm, 65 kg, 0 handicap) was participated in data collection for the short approach shots. An iron club(Titleist 52 degree, 91.5 cm length, 450 g mass), attached with five reflective markers(12 mm), was used to collect experimental data. However, exact 3D coordinates and angles of the clubface are not directly calculated from measured data. A reverse engineering platform(Minolta Vivid910 hardware and Rapidform software) was thus employed to acquire the scanned data of the clubface. The scanned data and measured data were first aligned by applying appropriate coordinate transformations, and then exact coordinates and angles of clubface could be obtained at each position during circular motion. The program(Club Motion Analysis 1.0) exports the open, heel, loft angles of the club.

• 자연과학논문집
• /
• 제14권2호
• /
• pp.1-14
• /
• 2004

본 연구는 스윙 변수의 관찰과 스윙에 미치는 원인을 종합적으로 분석한다. 골프공은 임팩트 후에는 제어가 되지 않는다. 공은 혼자 날아가 버린다. 그러므로 임팩트 전에 제어를 해야 된다. 이 논문에서 연구의 주제는 훅과 슬라이스의 원인을 찾아보고 해결의 방법을 모색하려고 한다. $\Delta$-평면은 임팩트후의 초기속도와 스핀축의 직각 방향인 양력의 방향을 포함하는 평면으로 스윙 속도 방향벡터와 클럽면의 직각방향으로 이루어진 평면이다. 골프 스윙에 있어서 미스샷의 교정에 $\Delta$-평면을 이용하기 위하여 이론적인 고찰과 기존의 이론과의 비교 연구하여 골퍼의 스윙을 지도하여 경기력을 향상하는데 본 연구의 목적이다.

• 한국의류학회지
• /
• 제26권8호
• /
• pp.1254-1264
• /
• 2002

The purpose of this study was to suggest a direction for golfwear design targeting young female golfers, based on the analysis of their preference of recent sportswear trend. Total 197 respondents, female golfers, were sampled for data gathering, who were asked to answer to the self-report questionnaire with the stimuli of five trendy golfwear styles [i.e., representing recent sportswear trend]. In summary, the results of this study were as follows: 1) The female golfers showed significant difference in their preference of recent sportswear-trend sues, according to their age or marital status. 2) Among the five trendy styles, each of which corresponded to five themes in 2002 S/S sportswear trend, the style of "Retro Chic", a type of retrospective trend theme, was most favored. 3) The female golfers in their twenties residing in Kangnam, were found to have ① relatively higher fashion leadership, and ② higher preference of maximal and kitsch trends, when compared with the rest of the respondents. 4) The most influential design elements in each trendy style, dominating the golfers' preference, varied with the feature of trend themes. 5) Based on the analysis of the young female golfers′ preferences of recent sportswear trend, a direction for golfwear design were suggested.

• 국제물리치료학회지
• /
• 제10권1호
• /
• pp.1706-1710
• /
• 2019

Background: Despite frequent shoulder injuries of rotator cuff muscle of golfers by the result of overuse and poor swing mechanics, there is little research on shoulder specific rehabilitation exercises for injured rotator cuff muscle and golf swing Objective: To examined the effect of rehabilitation exercise for golfers on the X factor and ground reaction force (GRF) according to phase of the golf swing. Design: Crossover study Methods: The participants were 13 amateur golfers selected for a 4 week rehabilitation exercise for golfers. A rehabilitation exercise for golfers consisting of 5 steps and 4 items (sleeper stretch, full side plank, push up to plank, high plank knee unders) were applied to all participants. A three dimensional motion analyzer and force platform (SMART-E, BTS, Italy) were used to measure the X factor (angle between shoulder and pelvis at top of back swing) and GRF according to phase of the golf swing. All dependent variables were measured before and after exercise. The collected data was analyzed using the paired t test and SPSS 21.0. Results: The GRF had a statistically significant increase in the impact phase and ratio impact/weight after rehabilitation exercise for golfers (p<.05). The X-factor, GRF in top of back swing and finish were no significant differences between before and after exercise (p>.05). Conclusions: These results suggested that rehabilitation exercise for golfers was effective for increasing GRF in the impact phase and ratio impact/weight for amateur golfer.

• 한국운동역학회지
• /
• 제25권1호
• /
• pp.11-19
• /
• 2015

Objective : The purpose of this study was to analyze the correlation between physical factors (X-factor, X-factor stretch) and club factors (club speed, ball speed, club path, smash factor, vertical launch angle, spin rate, flight time, total length) during impact and it affect on the total distance of the ball during a golf driver swing. Background : There were not enough studies that analyzed the correlation between physical factors(X-factor, X-factor stretch) and club factors(club speed, ball speed, club path, smash factor, launch angle, spin rate, flight time, total length) during a purpose swing to increase total distance. Method : For this study, 9 right handed professional male golfers (KPGA) were chosen. The test subject group used their own drivers and each took a total of 10 swings. These swings consisted of 5 purpose swings to increase total distance and 5 normal swings. Results : The purpose swing to increase total distance showed larger physical factors(X-factor, X-factor stretch) compared to a normal swing however the results were not statistically significant. Total distance increased during a purpose swing as a result of ball and club speed. Conclusion : The results showed that club factors, ball speed and club speed contributed the most in affecting the total distance of the ball during a purpose swing.