• 한국운동역학회지
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• 제24권1호
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• pp.27-33
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• 2014

In volleyball, the most common injuries are anterior cruciate ligament (ACL) tears. For this reason, volleyball players frequently use knee brace as prophylactic and rehabilitation measures. The purpose of the study was to investigate the effects of knee brace on anterior cruciate ligament injuries risk factors during spike take off in female volleyball players. Fifteen female volleyball players were recruited and performed randomly spike take off with and without knee brace. Kinematics and ground reaction data were collected to estimate the anterior cruciate ligament injuries risk factors. The ACL risk factors are knee maximum flexion angle, thigh maximum adduction angle, thigh maximum internal rotation angle, shank maximum abduction angle, shank maximum external rotation angle, knee maximum extension moment and knee maximum abduction moment. Data were analyzed with paired samples t-test with Bonfferoni collection. Female volleyball players with knee brace had no significant results in knee maximum flexion angle, thigh maximum adduction angle, thigh maximum internal rotation angle, shank maximum abduction angle and shank maximum external rotation angle compare to without knee brace. Female volleyball players, however, with knee brace showed more reduced knee maximum extension moment and knee maximal abduction moment than without knee brace. In conclusion, Female volleyball players with knee brace reduced anterior cruciate ligament stress.

• 융합정보논문지
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• 제9권7호
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• pp.153-158
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• 2019

본 연구의 목적은 여자 배구선수와 탁구 선수 사이에 무릎 관절의 등속성 근력 수준을 비교하는 것이다. 총 27명의 엘리트 배구 선수와 27명의 탁구 선수가 이 연구에 참여하였다. 본 연구는 등속성 근력 측정을 통해 여자 배구선수 및 탁구 선수 무릎 굽힘근 근력과 폄근 근력의 양을 측정하였다. 최대 토크는 $60^{\circ}/s$에서 3회 최대 수의적 굽힘과 폄 수축을 수행하여 측정하였다. 여자 배구 선수는 여자 탁구선수 보다 무릎 폄과 굽힘근 근력이 높았다. 탁구 선수들은 왼쪽과 오른쪽 무릎 근력에 유의한 차이가 없었다. 하지만 배구 선수들은 양쪽 무릎 근력에 차이를 보였다. 또한, 신장과 체중은 무릎 근력과 양의 상관관계를 보였다. 본 연구를 통해 여자 배구 선수는 탁구 선수보다 무릎 근력이 더욱 높은 수준에 있음을 알 수 있었다. 또한 배구 선수가 비대칭적 무릎 근력이 있음을 발견하였다. 향후 연구에서는 등속성 근력강도에 대한 연구가 다른 스포츠 선수와 비교하여 확인될 것을 기대한다.

• 국제물리치료학회지
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• 제8권2호
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• pp.1158-1162
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• 2017

The purpose of the study was to investigate the strength of sokinetic muscle by the position of a volleyball players. Analysis and comparison of shoulder dynamic stability will be conducted according to rotational movement of the shoulder during spiking and serving amongst the various positions. Fifty professional Korean female volleyball players (age: 20~30), all different positions - attacker (left and right), center, setter, and libero were The concentric peak torque, strength ration of the internal and external rotation of the shoulder girdle for both dominant and non-dominant arms. Firstly, there were significant differences found for the strength ratio between the setter and the other positions in the dominant arm. On a second note, there was a significant decrease in shoulder dynamic stabilization for both the attacker and center in the dominant arm. However, there were no significant differences for the setter or the libero. This study suggests that the isokinetic muscle strengths of the volleyball players are different from each other.

• 한국콘텐츠학회논문지
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• 제12권6호
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• pp.438-447
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• 2012

이 연구는 프로배구 선수의 사회연결망 구조를 분석하고, 연결망 주요 변수와 자원교환의 관계를 규명하였다. 이 연구에서는 유목적 표집법을 이용하여 2011년 한국 프로배구팀 중 남자 5개팀과 여자 5개 팀의 선수들을 연구대상으로 선정하였으며, 각 140명을 표집하였다. 그러나 최종 분석에 사용된 데이터는 127명이다. 조사방법은 NGQ(Name Generator Question)를 이용한 면접법을 통하여 실시하였으며, 자료처리방법은 NetMiner 3.0을 활용하여 사회연결망 분석을 실시하였다. 결론은 다음과 같다. 첫째, 프로배구 선수의 사회연결망은 멱함수 법칙을 따르는 척도없는 네트워크였다. 즉, 중앙에 놓여 있는 소수의 선수(노드)가 변방이나 주변에 위치한 다른 선수와의 사회적 관계를 끌어 들이는 부익부 빈익빈 형태를 보였다. 둘째, 프로배구 선수의 사회연결망 구조는 자원교환과 유의한 관련성을 지니고 있다. 즉, 내향 활동성이 높을수록 모든 자원교환에서, 외향 활동성이 높을수록 사교적 자원교환에서, 매개중앙성이 높을수록 모든 자원교환에서, 내향 파워가 높을수록 사교적 자원교환에서, 그리고 외향 파워가 높을수록 모든 자원교환에서 유리하였다. 프로배구 선수의 사회연결망에서의 중앙과 변방의 자리매김 위치는 선수들간의 자원교환에서 유리함을 알 수 있다.

• 국제물리치료학회지
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• 제2권1호
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• pp.229-236
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• 2011

The purpose of this study was to comparatively analyze the active stability of shoulder joints according to the frequency of overhead motions, such as serving and spiking, engaged in by female professional volleyball athletes who play different positions, and to provide the results as the basic data for developing exercise programs to prevent shoulder joint injuries. The subjects of this study were 50 Korean female professional volleyball players and positions were as follows: left and right attackers, centers, setters, and liberos. The external rotation and internal rotation muscle strength and muscle strength ratios of the dominant and non-dominant arms of all subjects were measured using Biodex. The results of this study are as follows: Frist, no significant differences were found in the internal and external rotation muscle strength of the dominant and non-dominant arms between positions. Second, for the shoulder joint muscle strength ratio of the dominant arm, by position, the setter showed significantly greater stability compared to the other positions. Third, for the shoulder joint muscle strength ratio of the non-dominant arm, by position, no significant difference in stability between positions was found. Fourth, it was found that the dominant arm had significantly greater instability of the shoulder joint than the non-dominant arm for attackers and centers, but no significant difference was found for setters and liberos. This study comparatively analyzed the muscle strength ratios of the external/internal rotations and dominant/non-dominant arms, which can determine the stability of the shoulder joints between female professional volleyball playing positions that engage in jumps and spikes using only the dominant hand and positions that do not.

• Nutritional Sciences
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• 제8권2호
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• pp.118-124
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• 2005

To examine the eating attitudes, weight concerns, dietary intake, and menstrual function of Korean female elite athletes, 109 subjects in seven sports disciplines (rhythmic gymnastics, synchronized swimming, badminton, volleyball, Taekwondo, field hockey, and soccer) responded to a questionnaire consisted of three parts; eating attitudes and behavior(Eating Attitude Test-26; EAT26), body weight perception (Body Dissatisfaction Index: BDI) and weight control behavior, and menstrual history and status. They also recorded three-day dietary intake. Body weight (43.6$\pm$4.3 kg) and body mass index (16.7$\pm$1.4 kg/$m^2$) in rhythmic gymnasts were lower than those in other athletes (P<0.05). EAT26 scores were not different among sport events (12.3$\pm$6.5 total), however, eating disturbances (EAT26 score$\geq$20) were highly prevalent in aesthetic athletes ($30\%$) than in others ($5\%$). More than half of the athletes perceived themselves overweight and four fifth of the athletes desired to reduce weight about 4.4 kg. The gymnasts consumed the lowest caloric intake (1028:t371) while the volleyball players did the highest (2995$\pm$342 kcal/d) (P<0.05). The BDI score was not different among sport events. Three fourth of the athletes experienced weight control, and the most frequently used weight reduction method was exercise followed by using robber suits, diet, and sauna. About $40\%$ of the subjects reported irregular menstrual cycles, but menstrual dysfunction ($\leq$6 menses/yr) was only $5\%$. Generally, the Korean female elite athletes desired to reduce weight from their current body weight. No differences in eating attitude and body dissatisfaction were noticed among athletic disciplines. However, eating disturbances were highly prevalent in aesthetic athletes who also reported much less energy intake than the recommend daily energy intake. It appeared that weight reduction methods were not properly practiced in these population. Menstrual dysfunction was minimally reported.