• The Korean Journal of Physiology and Pharmacology
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• 제22권4호
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• pp.427-436
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• 2018

The objective of this study was to analyze the concurrent treatment effects of ursolic acid (UA) and low-intensity treadmill exercise and to confirm the effectiveness of UA as an exercise mimetic to safely improve muscle atrophy-related diseases using Sprague-Dawley (SD) rats with skeletal muscle atrophy. Significant muscle atrophy was induced in male SD rats through hind limb immobilization using casting for 10 days. The muscle atrophy-induced SD rats were group into four: SED, sedentary; UA, daily intraperitoneal UA injection, 5 mg/kg; EX, low-intensity (10-12 m/min, $0^{\circ}$ grade) treadmill exercise; and UEX, daily intraperitoneal UA injection, 5 mg/kg, and low-intensity (10-12 m/min, $0^{\circ}$ grade) treadmill exercise. After 8 weeks of treatment, endurance capacity was analyzed using a treadmill, and tissues were extracted for analysis of visceral fat mass, body weight, muscle mass, expression of muscle atrophy- and hypertrophy-related genes, and endurance capacity. Although the effects of body weight gain control, muscle mass increase, and endurance capacity improvement were inadequate in the UA group, significant results were confirmed in the UEX group. The UEX group had significantly reduced body weight and visceral fat, significantly improved mass of tibialis anterior and gastrocnemius muscles, and significantly decreased atrophy-related gene expression of MuRF1 and atrogin-1, but did not have significant change in hypertrophy-related gene expression of Akt and mTOR. The endurance capacity was significantly improved in the EX and UEX groups. These data suggest that concurrent treatment with low-intensity exercise and UA is effective for atrophy-related physical dysfunctions.

• 한국운동역학회지
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• 제21권5호
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• pp.573-584
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• 2011

The purpose of this study was to perform a kinematic analysis of the high jump techniques of the three men's medalists at the 2011 IAAF Championships in Daegu (August 27-September 4, 2011). In particular, a three-dimensional coordinates method was used to analyze the last three strides before touchdown, the touchdown techniques, and the movements after takeoff toward the bar. An analysis of the, data for the biomechanical characteristics of the world's best high jumpers could contribute to an improvement in the performance of a national high jumper. The first conclusion of the data analysis was that the arm movements of the gold medalist, J. Williams, had a single arm form, whereas the arm movements of the other medalists were a double arm form. Second, the difference in the knee joint angles upon touchdown and toe-off was $10^{\circ}$. Third, J. Williams achieved his maximum CM height after takeoff (1.26 m) using the maximum flexion of his knee joint. Fourth, the foot contact duration of A. Dmitrik (0.11 s) was the shortest among the medalists, and the ratio for his transformation of horizontal velocity to vertical velocity was the greatest (75.25%) among the three. Last, the maximum CM height of T. Barry was the greatest, and his foot contact duration was the longest.

• 대한물리의학회지
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• 제5권3호
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• pp.341-350
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• 2010

Purpose : To provide information and data about the physical therapy service for planning future Olympic and other mass gatherings. Methods : To document the injuries sustained during the 2008 Beijing Olympic Games in a sample of patients visiting the physical therapy department of the Korean Olympic Committee. Athletes visited the physical therapy department in 2008 Beijing Olympic Korean delegation from 1 August through 22 August. Results : The sex ratio of athletes who visited physical therapy room was male 27.5%, female 72.5% and that number of case sports were higher Handball (26.2%), hockey (15.8%), archery (10.4%). The most prevalent injury of body parts was shoulder (15.1%), followed by the lumbar(14.2%), and the cervical spine (10.5%). Treatment modality had manual therapy(891), electrical therapy (584), ultrasound (461) and the number of taping were handball (47.8%), hocky (23.8%), judo (8.2%). Ankle (31.4%) was the most body parts of taping. Conclusion : Physical therapy in sport as a professional sports event to get their players to injury prevention and treatment. These results can be of help to optimize the strategies to prevent injuries and to treatment the injured athletes.

• 수산해양교육연구
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• 제28권2호
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• pp.356-365
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• 2016

The purpose of this study was to verify the influences of sport enjoyment factors on recreation specialization of water sports participants. The study conducted a research survey through purposive sampling method after selecting 4 water sports center in Busan. 260 questionnaires distributed and 246 were selected as final valid sample by removing 14 questionnaires that have insufficient answers. Then data were analyzed through exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis using SPSS Window ver. 20.0. The results were as followings. First, the enjoyment factors have a positive effect on recreation specialization. Second, escaping from daily routine and improving technical skill dimensions of enjoyment factors have an influence on centrality of life. Third, improving technical skill dimension of enjoyment factors have a positive effect on past experience. Lastly, flow and improving technical skill dimensions of enjoyment factors have an influence on economic investment.

• The Korean Journal of Physiology and Pharmacology
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• 제21권6호
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• pp.651-656
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• 2017

Ursolic acid (UA) supplementation was previously shown to improve skeletal muscle function in resistance-trained men. This study aimed to determine, using the same experimental paradigm, whether UA also has beneficial effects on exercise-induced skeletal muscle damage markers including the levels of cortisol, B-type natriuretic peptide (BNP), myoglobin, creatine kinase (CK), creatine kinase-myocardial band (CK-MB), and lactate dehydrogenase (LDH) in resistance-trained men. Sixteen healthy participants were randomly assigned to resistance training (RT) or RT+UA groups (n=8 per group). Participants were trained according to the RT program (60~80% of 1 repetition, 6 times/week), and the UA group was additionally given UA supplementation (450 mg/day) for 8 weeks. Blood samples were obtained before and after intervention, and cortisol, BNP, myoglobin, CK, CK-MB, and LDH levels were analyzed. Subjects who underwent RT alone showed no significant change in body composition and markers of skeletal muscle damage, whereas RT+UA group showed slightly decreased body weight and body fat percentage and slightly increased lean body mass, but without statistical significance. In addition, UA supplementation significantly decreased the BNP, CK, CK-MB, and LDH levels (p<0.05). In conclusion, UA supplementation alleviates increased skeletal muscle damage markers after RT. This finding provides evidence for a potential new therapy for resistance-trained men.

• 디지털융복합연구
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• 제12권10호
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• pp.605-613
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• 2014

해양레저 관광 활성화를 위해 해양레저스포츠 체험선택과 체험효과, 체험만족 간의 관계를 연구하고자 설문지를 제작한 후 보령지역을 방문하여 조사 분석을 실시하는 연구를 수행한 결과 다음의 결론을 얻었다. 첫째, 해양레저스포츠의 선택중요는 선택만족에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 해양레저스포츠의 선택중요는 체험효과에 긍정적인 영향을 미치는 것으로 나타났다. 셋째, 해양레저스포츠의 선택만족은 체험효과에 긍정적인 영향을 미치는 것으로 나타났다. 넷째, 해양레저스포츠 방문객들은 모타보트, 바나나보트, 요트 체험을 선호하는 것으로 조사되었다. 다섯째, 해양레저체험센터 건립시에는 장비대여소, 안전시설, 해양레저체험시설이 포함되어야 한다.

• Journal of Sport and Applied Science
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• 제6권3호
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• pp.1-7
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• 2022

Purpose: The purpose of this study is to provide basic data for developing an educational program that can be practically applied in the field of survival swimming education. Research design, data, and methodology: This study reviewed prior literature including governmental reports, journal articles related to survival swimming programs at home and abroad. Based on the basic data collected through literature, domestic and foreign educational institutions and national educational programs were cataloged and analyzed. Results: The study found that among the goals of swimming education, the prevention of water accidents and the cultivation of water safety skills along with improving swimming ability are very important educational goals. Currently, domestic survival swimming education programs are divided into classes and training sessions, so it is necessary to develop an educational program according to each individual's swimming ability and a unified and systematic program through education for each level of survival swimming learners. Conclusions: It is thought that the reinforcement of the leader's capacity for quality improvement will have a positive effect for the development of survival swimming. Further implications were discussed.

• 대한견주관절학회:학술대회논문집
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• 대한견주관절학회 1995년도 학술대회
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• pp.22-22
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• 1995

One hundred and forty-eight cases of tennis elbow were treated by conservative managements firstly such as rest, medication, immobilization, physical therapy and local steroid injection, from Jan. 1985 to Jun. 1994 at Department of Orthopaedic Surgery, National Medical Center. Among the 148 cases, 16 cases who failed conservative managements, were treated with Nirschl & Pettrone operation. The results were summarized as follows, 1. Among the 148 cases, 110 cases$(74\%)$ were female, and 61 cases$(41.2\%)$ were in the age group 41 to 50, and mean age was 42.3 2. Ninety-nine cases were housewives and only 15 cases were related to sports. 3. The results 116cases$(78\%)$, of conservative treatment were excellent and good 10 fair and failure in 32 cases$(22\%)$, by Nirschl and Peettrone assessment. 4. Among the 16 cases who were treated with Nirschl and Pettrone operation, excellent result was obtained 10 7cases, good in 3 cases, fair in 4cases and failure in 2 cases. 5. Recurrence was developed in 18 cases$(12.2\%)$, and we obtained excellent & good result in 17 cases with both conservative and operative treatment. Above results suggest that the term, tennis elbow is a misnomer because it occurs more commonly in non-athletes such as housewives than in tennis players. So it seems to be a occupational disease rather than sports injury. Now, we propose eliminate of the term, elbow and substitute with terminology that described the true understanding and therapeutic orientation of it.

• 한국의류산업학회지
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• 제21권1호
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• pp.67-74
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• 2019

This study aims to investigate the relation between pressure, 3D length change, and subjective pressure sensation in sports brassieres. Seven Korean women in their 20s and 30s were chosen as subjects. In the experiment, the subjects evaluated four types of sports brassieres wherein the lower band was changed. The results of the study were as follows. The pressure according to the measurement position was lower at the front part than at the side and back parts (p<.05), and there was no difference in the pressure according to the brassiere type. It was observed that brassiere C, which had the higher extension band, was elongated more than the other brassieres when worn. In the case of brassiere B, which had a slit in the front center, it was observed that the 3D length of the front part changed very little as the slit spreads, and the back part stretched in a manner similar to those of the other brassieres. Subjective pressure sensation was statistically different only at the front and the side of the lower band. Brassiere B(with a silt) demonstrated the least subjective pressure sensation; the pressure sensation was high when wearing brassieres A and D (p<.05). Brassieres B and C were also preferred for overall comfort. In conclusion, it was observed that the substitution of material and morphological transformation affect subjective sensation.

• 한국노년학
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• 제27권2호
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• pp.487-502
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• 2007

이 연구는 비영리 사회체육시설에서 장기간 운동을 지속하고 있는 고령자의 운동지속요인을 규명하는데 목적을 두고 수년 동안 지속적으로 운동을 해 오고 있는 고령자들이 중단 없이 운동을 지속할 수 있게 한 요인이 무엇인가를 규명하고자 하였다. 이를 위해 이 연구에서는 질적연구방법 중 문화기술적 연구를 수행하였다. 연구 참여자는 연구자가 비영리 사회스포츠 시설에서 연구자가 개설한 태극권 강좌를 2년 이상 수강하고 있는 회원 중 운동을 5년 이상 지속하고 있는 회원 5명이다. 태극권 강좌를 운영하면서 이들의 운동생활에 대하여 참여관찰한 내용과 심층면담 및 비공식적 면담을 통하여 자료를 수집하였고, 연구 참여자의 운동생활, 회원상호간 및 운영자와 지도자의 관계를 밝히는 과정으로 의미를 범주화하는 영역분석을 사용하여 자료를 분석하였다. 이러한 연구방법과 과정을 통해서 도출한 결과는 다음과 같다. 첫째, 운동을 지속하는 고령자의 특성은 사회적 상호관계에서의 참여의식이 매우 높았으며, 오랜 운동경험을 통하여 습득한 자기관리 능력이 뛰어났다. 둘째, 지속적 운동수행에 영향을 미친 요인들은 사회적 관계 요인, 환경적 요인, 사회심리적 요인 등 다양한 요인이 복합적으로 작용하고 있었으며, 이러한 요인들 중에서 가장 강하게 이들을 지속적으로 운동과 결속시키고 있는 것은 동료, 지도자, 운영자 상호간에 강하게 응집된 인간관계였다. 여러 가지 이유로 상업 스포츠시설을 이용하지 못하고 비영리 사회체육시설을 이용하는 퇴직 연령이후 여성들의 운동지속을 위해서는 운동 프로그램이나 서비스, 시설 등의 환경개선 이외에도 시설 내에서의 회원상호간 친목 프로그램과 지도자 직원에 대한 인간관계 교육의 중요성과 필요성을 이 연구는 말해주고 있다.