• 한국운동역학회지
• /
• 제26권2호
• /
• pp.143-151
• /
• 2016

Objective: The purpose of this study was to investigate the effect of fatigue induction on ground reaction force (GRF) components, postural stability, and vertical jump performance in Taekwondo athletes. Method: Ten Taekwondo athletes (5 men, 5 women; mean age, $22.30{\pm}2.62years$; mean height, $174.21{\pm}9.20cm$; mean body weight, $67.28{\pm}12.56kg$) participated in this study. Fatigue was induced by a short period of strenuous exercise performed on a motorized treadmill. The analyzed variables included vertical jump performance, static stability (mediolateral [ML], center of pressure [COP], anteroposterior [AP] COP, ${\Delta}COPx$, ${\Delta}COPy$, and COP area), postural stability index values (ML stability index [MLSI], AP stability index [APSI], vertical stability index [VSI], dynamic postural stability index [DPSI]), and GRF components (ML force, AP force, peak vertical force [PVF], and loading rate). To analyze the variables measured in this study, PASW version 22.0 was used to calculate the mean and standard deviation, while a paired t-test was used to evaluate the pre- versus post-fatigue results. Pearson's correlation coefficients among variables were also analyzed. The statistical significance level was set at ${\alpha}$ = .05. Results: Vertical jump performance decreased significantly after the induction of fatigue, while AP COP, ${\Delta}COPx$, COP area, APSI, VSI, and DPSI increased significantly. PVF and loading rate increased significantly after the induction of fatigue, while the postural stability variables (AP COP, ${\Delta}COPy$, COP area, APSI, VSI, DPSI) were similarly correlated with GRF components (PVF, loading rate) after fatigue was achieved (r = .600, $R^2$ = 37%). Conclusion: These results suggest that the induction of fatigue can decrease postural stability and exercise performance of Taekwondo athletes during training and competition sessions.

• 한국산학기술학회논문지
• /
• 제13권10호
• /
• pp.4445-4452
• /
• 2012

본 연구의 목적은 고등학교 육상선수들의 성취목표성향과 자기관리의 관계가 성별, 세부종목별, 그리고 운동경력에 따라 어떠한 차이가 있는지를 규명하는 것이다. 체육고등학교에 재학 중인 229명의 육상선수들이 설문에 참여하였으며, 설문자료를 분석하여 다음과 같은 결과를 도출하였다. 남학생들의 성취목표성향은 여학생들에 비해 과제목표지향적이었으며(p<0.05), 자기관리의 세부영역 중에서도 대인관리, 정신관리, 그리고 몸 관리에서 여학생들보다 높게 나타났다(p<0.05). 세부종목에 따른 결과를 살펴보면, 도약 선수들이 투척선수들에 비해 정신관리가 높게 나타났으며(p<0.05), 다른 자기관리의 세부영역에서는 통계적 유의성이 없었다. 성취목표성향과 자기관리는 고등학교 육상선수들의 경기력에 영향을 미치는 요인으로 볼 수 있지만 현장에서 적용하기 위해서는 본 연구에서 나타난 결과를 보다 세심한 주의가 필요하다.

• 한국운동역학회지
• /
• 제27권3호
• /
• pp.219-227
• /
• 2017

Objective: The aim of this study was to analyze the effects of bobsleigh shoes on the lower extremity range of motion and start speed lap time and to develop bobsleigh shoes suitable for winter environments and Korean players based on sports science and optimized biomechanical performance. Background: The bobsleigh shoes used in the start section of the sport are one of the most important equipment for improving athletes' performances. Despite the importance of the start section, there are no shoes that are specifically designed for Korean bobsleigh athletes. Thus, Korean athletes have to wear sprint spike shoes instead of bobsleigh shoes to practice the start. Method: The subjects included four bobsleigh athletes from the Gangwon Province Bobsleigh Skeleton Federation. The study selected the bobsleigh shoe type A (company A) and type B (company B). We analyzed the lower extremity range of motion and sprint time (start line to 10 m) using a Motion Analysis System (USA). Results: In the measurement of the time required for the bobsleigh start section (10 m), the type A shoes demonstrated the fastest section record by $2.765{\pm}0.086sec$ and yielded more efficient movements, hip and knee flexion, hip extension, ankle dorsiflexion, plantar flexion, and inversion than the type B shoes. Conclusion: Type A shoes can yield a better performance via effective lower extremity movements in the bobsleigh start section. Application: In the future, functional analysis should be conducted by comparing the upper material properties, comfort, and muscle fatigue of bobsleigh shoes based on the Type A shoes to develop such shoes suitable for Koreans.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2006년도 추계 종합학술대회 논문집
• /
• pp.152-155
• /
• 2006

본 연구의 목적은 볼링 선수들을 대상으로 경쟁상태 불안아 경기 결과에 어떠한 영향을 미치는지에 대한 규명을 통하여, 스포츠 현장의 지도자들에게 선수지도를 위한 정보를 제공하는 데 목적이 있다. 이와 같은 목표를 달성하기 위하여 본 연구에서는 2006년 4월 19일부터 29일까지 경남 마산에서 개최된 제25회 대한볼링협회장배 전국 남, 여 종별 볼링선수권대회에 참가하는 선수를 모집단으로 설정한 다음 고등부 300명, 대학부 150명중 각각 100명씩을 추출하여 총 200명을 설문 조사를 실시, 실제분석에 사용하였다. 조사도구로는 Martens(1990)이 고안한 경쟁 상태 불안 검사지 (Competitive State Anxiety Inventory-2; CSAI-2)를 사용하였다. 자료 분석을 위한 통계분석기법은 회귀분석이었다. 이와 같은 연구방법 및 절차를 통하여 얻어진 결과를 기초로 다음과 같은 결론을 도출하였다. 첫째, 볼링선수의 경쟁상태불안은 성적순위에 영향을 미친다. 즉, 인지적 상태불안과 상태자신감에 영향을 미친다. 둘째, 볼링선수의 경쟁상태불안은 시합평균점수에 영향을 미친다. 즉, 인지적 상태불안과 상태자신감에 영향을 미친다.

• 한국융합학회논문지
• /
• 제9권8호
• /
• pp.301-309
• /
• 2018

본 연구의 목적은 여성선수의 신경인지능력이 양발 착지 시 비접촉성 전방십자인대 손상의 위험요인과 어떠한 관계가 있는지 규명하는 것이다. 여성선수 32명을 대상으로 신경인지검사와 양발 착지에 대한 동작분석을 실시하였다. 전산화된 신경인지 검사의 원점수와 동작분석을 통해 산출된 3차원 관절각, 모멘트, 파워, 수직지면반력, 부하율, 지지시간의 상관관계 분석을 위해 피어슨의 정률상관분석을 실시하였다. 연구결과 신경인지 점수가 높을수록 착지 시 자세유지를 위한 전략을 사용하는 것이 관찰되었다. 따라서 신경인지 검사는 잠재적인 전방십자인대 손상의 위험인자를 검출하기 위한 스크리닝 방법으로 사용 될 수 있을 것으로 생각된다.

• 복식
• /
• 제53권2호
• /
• pp.35-55
• /
• 2003

The purpose of the study is to get some pieces of prior information to eventually develop competitive swimming suit designs with Korean traditional images. The study has been accomplished in following steps. First, as theoretical research, the history of swimming suit design and the requirements in designing competitive swimming suits were studied. Second, as practical research, at first, the trend of the competitive swimming suit designs in the national swimming suit market was examined. And then. the questionnaire surveys of both professional and amateur swimmers about their design preferences with purchasing and fabric-related tendencies were conducted for understanding professionals' characters more exactly. This data were analyzed through cross-analysis and multi-response analysis and x 2 was used. The results of this study can be summarized as follows : First, athletes' preferential design tendency for the swimming suit designs were examined in the aspects of style, color, pattern, logo, and accessary. In style, female athletes preferred an athletic one-piece style and male ones preferred a brief style. In color. neutral, mostly black was preferred most and cold color group like dark blue and navy blue next, regardless of sex. In addition, they preferred similar color coordination. In pattern, though solid fabrics were mostly preferred in both sexes, especially Taeguk motive were considered the most appropriate pattern to show Korean image. Besides, logo was considered importantly, and swimming caps and goggles of accessaries were generally used. Second, athletes' swimming suit purchasing tendency was as a following. the number of swimming suits possessed was more than 4 pieces. the durable period was less than 3 months. and the most important point considered in purchasing was an easy fitting for men and a design with an easy fitting for women. And most of swimming athletes preferred foreign products than domestic ones, which was attributed to excellent quality, easy fitting, and good design. and so on. Third, in fabric-related tendency, food touch, easy fitting. and opaqueness were considered importantly. and durability to chlorine, elasticity, color fastness, easy draining, lightness, and so on were demanded forward.

• 한국융합학회논문지
• /
• 제11권6호
• /
• pp.89-94
• /
• 2020

본 연구는 국가대표 남자 필드하키선수들을 대상으로 허리의 시각적 상사 척도와 오스웨스트리 장애지수 및 허리의 근력 간의 상관관계 알아보고자 하였다. 시각적 상사 척도와 오스웨스트리 장애지수는 자기 기입식 평가로 진행하였으며, 허리의 근력을 DAVID를 이용하여 측정하였다. 자료 분석은 피어슨의 적률상관관계를 사용하였으며, 통계적 유의 수준은 α=.05로 하였다. 연구 결과 남자 필드하키선수들의 허리의 시각적 상사 척도와 오스웨스트리 장애지수는 통계적으로 유의하였다. 그러나 그 외의 시각적 상사 척도와 오스웨스트리 장애지수는 허리의 근력에 어떠한 상관관계도 없었다. 따라서, 필드하키선수들의 허리 재활운동 시 단순한 근력운동이 아닌 새로운 운동프로그램이 개발되어야 할 필요성이 있다. 이러한 연구들은 향후 선수들의 치료 및 운동프로그램 개발에 유용한 기초자료로 제공될 것으로 사료된다.

• 한국융합학회논문지
• /
• 제11권10호
• /
• pp.125-131
• /
• 2020

본 연구는 엘리트 유소년 태권도 선수들을 대상으로 골절 발생 위험을 감소시키고, 골다공증의 조기진단을 평가하는 지표로 사용되는 골밀도와 운동 수행능력을 판단하는 지표인 심폐기능, 그리고 선수들에게 최대의 적인 스포츠 손상과의 관계를 알아보고자 하였다. 골밀도와 심폐기능 그리고 스포츠 손상 간의 관계를 알아보기 위해 Pearson 상관관계 분석을 시행하였다. 또한, 골밀도가 심폐기능 및 스포츠 손상에 미치는 영향을 알아보기 위해 단순 선형회귀 분석을 시행하였다. 골밀도는 환기량(r=.388) 및 최대산소 능력(r=.478) 그리고 스포츠 손상과 상관관계가 있었다(r=-.292). 또한, 골밀도가 .002, 및 .006씩 증가하면 환기(p=.001) 및 최대 산소능력은(p=.006) 1씩 높아진다. 또한, 골밀도가 .016씩 감소하면, 스포츠 손상의 발생이 1씩 증가한다(p=.044). 선수들의 골밀도 향상으로 스포츠 손상을 예방할 수 있으며, 향후 스포츠 손상 예방 프로그램으로 활용할 수 있을 것이다.

• 한국가정과교육학회지
• /
• 제12권1호
• /
• pp.59-73
• /
• 2000

The purpose of this study was to investigate the percent of body fat. fatness indices. and relationship between the percent body fat and dietary factors among the female middle school athletes. Hights, weights, an percent body fats of 17 soccer player. 10swimmer, and 5 rhythmic gymnast were measured. Dietary data were collected by questionnaires. The results of this study are summarized as follows. 1. Average body fat measured by infrared interactance method was 23.8$\pm$4.9% and BMI body fat was 20.3$\pm$2.6% Fatness indices such as BMI was 18.8$\pm$2.1 Rohrer index 119.4$\pm$11.8 percentage of ideal weight 90.4$\pm$9.2 and RBW 29.7$\pm$4.1. 2. Soccer player, swimmer, and rhythmic gymnast showed significant differences in percent body fat and fatness indices. ryhthmic gymnasts were smaller and lighter. 3. Most athletes were interested in diet and nutrition. and wanted to learn more about nutrition. Middle school female athletes ranked parents first or second for nutrition information. followed by managers$.$coaches$.$trainers. 4. Nutrition knowledge test score was 4.7 point out of possible 10, which is rather low, and showed significant difference in 3 kinds of players. 5. The quantities of food eaten in breakfast. lunch dinner and snack were significantly different among soccer player. swimmer. and rhythmic gymnast. In preference score of food groups, only beverage score was significantly different and of cooking methods. roasting and steaming were significantly different among the soccer player. swimmer. and rhythmic gymnast. 6. When subjects were divided into 3 groups on the basis of % infrared body fat, subjects with the highest body fat showed the tendency to eat more than others(non-sig). In the preference score of food groups. only fish showed significant difference among the groups. There were no significant differences between body fat and preference of various cooking method.

• 구강회복응용과학지
• /
• 제23권3호
• /
• pp.205-218
• /
• 2007

Statement of problem, and purpose: This study was performed to make good foundations for better development of mouth guards by surveying, analyzing and finding the understanding or opinions of athletes on mouth guards. Material and Methods: 617 sports players comprised the data base of the Survey, 230 contact sports, 387 non-contact sports. We surveyed and analyzed by asking following questions for athletes. 1. The sort of sports in which the player is majoring. 2. How long the players career is. 3. Whether the player has received prize or not. 4. The condition of stomatognathic system. 5. His or her eating habits. Results and conclusion: 1. Inconveniences should be minimized in wearing mouth guards. 2. The differential designs are thought to be needed for different sort of sports and for frequently affected regions 3. The changes in acknowledgment of athletes in mouth guards is necessary, that is mouth guard is very important & essential to prevent or minimize the traumatic damages. 4. Keeping in intimate and close contact with related athletic associations and putting athletes under the obligation to wear it for themselves, should be required.