• 한국융합학회논문지
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• 제9권7호
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• pp.293-300
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• 2018

청소년기 운동선수들에게 다양한 진로 선택의 기회를 실현시켜주기 위해서는 가장 먼저 학생 자신의 적성에 맞는 직업을 선택할 수 있도록 도움을 주는 것이다. 청소년기 운동선수들은 일반적인 청소년들과 달리 다양한 진로를 선택하고 이를 실현하는데 사용될 수 있는 절대적인 시간이 부족한 것이 현실이다. 따라서 청소년기 운동선수들에게는 자신의 적성에 맞는 직업군 별로 차별화되고 특성화된 융합적 학습자료가 필요한 것이다. 이들 직업군 별로 특성화된 학습자료는 가장 적은 시간의 투입으로 가장 큰 교육효과를 나타낼 수 있는 방법이기에 청소년기 운동선수들의 다양한 진로 선택의 기회를 실현시켜주기 위해서라도 꼭 필요한 정보로써의 활용 가치가 높다고 할 수 있다.

• 대한스포츠의학회지
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• 제36권4호
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• pp.180-188
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• 2018

Purpose: The purpose of this study is to identify bilateral differences of physeal closure of the lateral compartment of the elbow in osteochondritis dissecans (OCD) and related factors with premature physeal closure. Methods: Initial radiographs of the bilateral elbows in 40 baseball players with OCD (group I) were reviewed for the status of physeal closure of the lateral compartment; capitellum, radial head, lateral epicondyle. Forty baseball players with medial epicondylar apophysitis (group II) were enrolled as a control. Relative status of physeal closure of dominant elbow was defined as early, same, and delayed. Bilateral differences of the status of physeal closure were analyzed between groups, and according to the radiographic stages, extent of the lesions and demographic factors in group I. Results: Significant early physeal closures of dominant elbows were identified in group I in capitellum (group I, 55%; group II, 3%), radial head (group I, 53%; group II, 3%), and lateral epicondyle (group I 37%; group II, 5%). In group I, advanced stage and extended lesion showed early lateral compartment physeal closure especially in capitellum and radial head, and players with longer career length and limitation of motion showed early closure. Conclusion: Over the half of the adolescent baseball players with OCD demonstrated early radiocapitellar physeal closures of dominant elbow in initial presentation. Because premature physeal closure contributes to the development of arthritis without appropriate radiocapitellar remodeling, early detection of OCD is essential for prevention of arthritis and successful conservative management.

• 디지털융복합연구
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• 제16권12호
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• pp.603-610
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• 2018

본 연구의 목적은 청소년 운동선수가 경험하는 운동탈진의 심리적 과정을 알아보기 위해 긍정적 사고와 정체성, 스포츠 행복지각 및 운동탈진의 구조적 관계를 규명하고 긍정적 사고와 운동탈진의 관계에서 정체성과 스포츠행복 지각의 매개효과를 분석하는 것이다. 이러한 연구목적의 달성을 위하여 전국에 소재한 체육 관련, 그리고 일반계열 중 고등학교의 남녀 운동선수를 대상으로 편의표본추출법을 이용하여 총 306부를 최종 유효 표본으로 선정하였다. 자료처리는 SPSS 22.0과 AMOS 22.0을 이용하여 전체모형에서의 적합도 검증 확인 후 가설검정을 하였으며 그 결과는 다음과 같았다. 먼저 긍정적 사고의 주관적 만족과 목표추구는 운동 정체성에 유의한 영향을 미치는 것으로 나타났다. 둘째, 긍정적 사고의 주관적 만족 및 목표추구는 스포츠 행복지각에 모두 영향을 미치지 않는 것으로 나타났다. 셋째. 청소년 선수들의 운동 정체성은 스포츠 행복지각에 정적으로 운동탈진에는 부적인 영향을 미치는 것으로 나타났다. 넷째, 청소년 선수들이 지각하는 스포츠 행복지각은 운동탈진에 부적인 영향을 미치는 것으로 확인되었다. 마지막으로 긍정적 사고의 목표추구와 스포츠행복 지각의 관계에서 운동정체성은 매개역할을 하며, 목표추구와 운동탈진의 관계에서도 운동정체성은 매개역할을 하는 것으로 나타났다.

• 대한물리의학회지
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• 제13권2호
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• pp.11-19
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• 2018

PURPOSE: The aim of this study was to identify the effects of joint mobilization intervention combined with exercise on range of motion (ROM), pain intensity, and functional performance in adolescent baseball players with internal impingement syndrome of the shoulder. METHODS: The subjects were 30 adolescent baseball players diagnosed with internal impingement. Ten subjects were randomly assigned to each of 3 groups: Group 1 (exercise only), Group 2 (joint mobilization combined with exercise), and Group 3 (rest-only control group). Three weekly interventions were given for 4 weeks (the control group rested for 4 weeks). The main outcome measures were goniometer, visual analogue scale (VAS), and Korean Kerlan Jobe shoulder-elbow (K-KJOC) scores. The ROM (external and internal rotation), pain intensity (at the moment of throwing), and functional performance were compared among the groups. RESULTS: No significant difference was observed among the groups in the range of external rotation of the shoulder before and after the intervention, but the range of internal rotation was significantly increased in Group 2 compared to Groups 1 and 3. Pain intensity was significantly lower in Group 2 than in Group 1 and 3, and functional performance was significantly increased in Group 2 compared to Group 1 and 3. CONCLUSION: An intervention that combined joint mobilization with exercise was more effective than resting or exercise alone for rapid recovery from sports injury and improvement in athletic performance.

• 한국전문물리치료학회지
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• 제31권2호
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• pp.142-150
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• 2024

Background: Scapular dyskinesis (SD) is closely related to imbalance of the rotator cuff (RC) muscles. However, previous studies have only focused on isometric strength. To our knowledge, there has been no study examining potential differences in concentric and eccentric strength and functional strength ratio (FSR) of the RC muscles based on functional parameters related to throwing in with or without SD. Objects: This study aimed to determine whether there was a difference in the RC muscle strength and FSR between the dominant shoulder with SD and the non-dominant shoulder without SD in adolescent baseball players. Methods: Forty adolescent baseball players participated and classified types of SD based on movement patterns using the SD test by two examiners. The isokinetic concentric and eccentric peak torque of the internal rotation (IR) and external rotation (ER) were measured and quantified as peak torque to body weight (PT/BW). Also, the FSR was obtained by calculating the strength ratios of eccentric IR to concentric ER (IRecc/ERcon) and eccentric ER to concentric IR (ERecc/IRcon), respectively. Results: There was a significant decrease in the IR and ER PT/BW in the dominant shoulder with SD compared to the non-dominant shoulder without SD (p < 0.05), regardless of contraction types. However, no significant difference was observed in the FSR in both IRecc/ERcon and ERecc/IRcon ratios. Conclusion: The findings indicate that the isokinetic concentric and eccentric PT/BW of the IR and ER muscles were significantly lower in the dominant shoulder with SD than in the nonthrowing shoulder without SD. Therefore, when establishing a strategy for addressing RC muscle weakness in adolescent baseball players with SD, it is essential to consider an approach that accounts for scapular kinematic recovery.

• 대한물리의학회지
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• 제13권2호
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• pp.157-165
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• 2018

PURPOSE: The purpose of this study was carried out to investigate the effect of plyometric training combined with core strength training on the balance and agility of adolescent soccer players. METHODS: A total of 36 subjects participated in this study. Subjects were randomly divided 3 groups and assigned PG (plyometric training group), CSG (core strength training group) and PCG (plyometric training combined with core strength training group). Each group was assigned to 12. Intervention was performed three times a week for 4 weeks. The training was performed for 60 minutes a day. Subjects were warmed up for 10 minutes, and performed main exercise for 40 minutes. Finally, subjects performed cool-down exercise including stretching for 10 minutes. A Statistical analysis was performed the paired t-test for the comparison pre and post intervention. A comparison among the groups was using one-way ANOVA, and the LSD was used for the post-test. RESULTS: The balance and agility were statistically significant differences in all group (p<.05). There was no significant difference in the balance factors between the three groups, but there was a significant difference in the agility factor (p<.05). CONCLUSION: Plyometric training and plyometric training combined with core strength training were effective for the balance and agility of adolescent soccer players.

• 디지털융복합연구
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• 제16권3호
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• pp.553-560
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• 2018

본 연구는 국내 엘리트 핸드볼 선수들을 대상으로 도핑에 대한 태도를 조사하고, 인구통계학적 특성, 도핑에 대한 정보 및 반도핑 교육 경험이 도핑에 대한 태도에 어떠한 영향을 미치는지를 확인하고자 하였다. 핸드볼 선수 358명 (청소년 선수 193명, 성인 선수 165명)을 대상으로 자가기입 설문지를 통해 나이, 성별, 운동경력 등의 인구통계학적 특성과 도핑에 대한 정보 습득 여부 및 반도핑 교육 경험 여부를 조사하였고, 이와 함께 Performance Enhancement Attitude Scale (PEAS) 설문지를 사용하여 도핑에 대한 태도를 조사하였으며, 수집된 자료는 단계적 다중 회귀분석을 통해 인구통계학적 특성, 도핑에 대한 정보 및 반도핑 교육 경험이 도핑에 대한 태도에 미치는 영향을 확인하였다. 그 결과, 성인 선수가 청소년 선수보다 도핑에 대해 더 관대한 태도를 보였고, 청소년 선수는 성별과 나이가 도핑에 대한 태도에 영향을 미치는 것으로 확인되었으며, 성인 선수는 성별이 도핑에 대한 태도에 영향을 미치는 것으로 확인되었다. 이러한 결과는 핸드볼 종목의 선수를 위한 반도핑 전략 마련에 유용한 정보가 될 것으로 생각된다.

• Journal of Nutrition and Health
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• 제37권10호
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• pp.881-887
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• 2004

Elevated plasma homocysteine is an independent risk factor for the development of cardiovascular disease. Exercise is generally believed to reduce the plasma homocysteine levels and therefore, being beneficial for cardiovascular disease (CVD). However, there is a possibility that athletes undergoing strenuous training and competition which increase oxidative stress may suffer from increased plasma homocysteine levels. The purpose of this study was to investigate the influence of endurance training on the plasma concentrations of B vitamins and homocysteine in 23 male adolescent field hockey players. Data collection and blood sampling was performed during the training period and non-training period. Following the training period, significant changes in energy and vitamin B6 intakes were observed in these subjects. Plasma vitamin B2, pyridoxal phosphate (PLP) and homocysteine levels were significantly higher during the training period than non-training period, whereas no difference was observed in plasma folate and vitamin B12 levels. Positive correlation was observed between plasma folate and folic acid intakes. When energy, B vitamin intakes were adjusted there was a significant negative correlation between plasma homocysteine levels and plasma riboflavin, folate and vitamin B12 levels. In conclusion, it is suggested that athletes with oxidative stress by strenuous exercise may need B vitamins since riboflavin, folic acid and vitamin Bl2 were shown to be negatively correlated with plasma homocysteine in athletes during the training period.

• 대한통합의학회지
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• 제8권1호
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• pp.101-111
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• 2020

Purpose : The purpose of this study was to identify the comparison of the effects of manual therapy combined with exercise on range of motion (ROM), muscle strength, and functional performance in adolescent baseball players with internal impingement syndrome of the shoulder. Methods : The subjects were 30 patients diagnosed with impingement syndrome of the shoulder. Thirty subjects are randomly assigned to each 3 different groups; Group 1. (exercise group), Group 2. (exercise+mobilization; EMOB group), Group 3. (exercise+mobilization with movement; EMWM group). The interventions were performed three times a week for 4 weeks. The main outcome measures were goniometer, Biodex dynamometer, and Korean Kerlan Jobe shoulder-elbow (K-KJOC) scores. The ROM (external and internal rotation), muscle strength (external and internal rotation: 60 °/sec., 180 °/sec.), and functional performance were compared among the groups. Results : No significant difference was observed among the groups in the range of external rotation of the shoulder before and after the intervention, but the range of internal and total rotation was significantly increased in Group 2, 3 compared to Groups 1. Muscle strength of external and internal rotation (60 °/sec., 180 °/sec.) was not significantly different among Group 1, 2, 3, and functional performance was significantly increased in Group 2, 3 compared to Group 1. However, there was no significant difference between Group 2 and Group 3 in all measurements. Conclusion : An intervention with manual therapy such as EMOB and EMWM was more effective than exercise alone for rapid recovery from shoulder injury and improvement in functional performance. However, further efforts are needed to identify effects of specific interventions with manual therapy.

• 대한통합의학회지
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• 제12권1호
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• pp.139-150
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• 2024

Purpose : Scapular dyskinesis, it have been shown to be common in overhead athletes and has been associated with RC muscle strength. Posterior shoulder tightness (PST) has been suggested as an important factor causing scapular dyskinesis. Therefore, rehabilitation programs should focus on a posterior shoulder stretch combined with scapular stabilization exercise (PSSE) intervention. Determine the effects of posterior shoulder stretch combined with scapular stabilization exercise on the rotator cuff (RC) muscles strength, functional strength ratio (FSR), range of motion (ROM), and pain. Methods : 30 adolescent baseball players participated and subjects were allocated PSSE group (n=15) or the SSE group (n=15). Both group performed a 6-weeks intervention and measured of isokinetic peak torque/body weight (PT/BW) of concentric external rotator (CER), eccentric external rotator (EER), concentric internal rotator (CIR), eccentric internal rotator (EIR), FSR, ROM, and pain. Results : After 6 weeks PSSE, significant increase CER PT/BW (+6.02±4.76 %), EER PT/BW (+5.39±4.22 %), EER to CIR ratio (+.17±.16), and internal rotation ROM (+15.08±3.57 °). Whereas, significant decrease EIR to CER ratio (-.14±.18), external rotation ROM (-12.00±6.94 °), and GIRD (-17.41±2.84 °) compared with pre-intervention. No significant difference of isokinetic PT/BW of CIR and EER post-intervention. In the SSE group showed no significant difference all measurements for isokinetic PT/BW, FSR, and ROM post-intervention. The pain was significant improve both PSSE group (-3.25±1.60) and SSE group (-2.83±1.85) post-intervention. Conclusion : Both the PSSE and SSE interventions led to more pain relief. However, only the PSSE group showed ROM, CER, EER PT/BW, and FSR improvements. These results might suggest that the PSSE intervention is a more effective program for improving RC muscle strength and balance, in particular, concentric and eccentric ER muscle strength, FSR and can expect to prevent shoulder injuries in adolescent baseball players with scapular dyskinesis.