• 한국운동역학회지
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• 제19권1호
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• pp.149-157
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• 2009

본 연구의 목적은 한국의 대표적인 배드민턴화(A Type)와 외국 배드민턴 브랜드제품(B Type)의 생체역학적인 변인들을 비교함으로서 한국제품의 착화감과 기능을 향상시켜 세계적인 수준의 배드민턴화 개발에 일조하는데 목적을 두었다. 분석변인들로는 동작 간 신발 안에서 발의 상대적인 움직임, 지면반력과 압력분포, 아웃솔의 마찰력등을 분석하였다. 또한 17명의 피험자를 통한 주관적인 착화감과 기능에 관련된 주관적인 실험이 실시되었다. A Type 배드민턴화의 경우 높은 뒤꿈치의 위치와 밋밋한 뒷굽의 형태로 신발 안에서 뒤꿈치를 잘 잡아주지 못하는 것으로 나타났다. 따라서 A Type 배드민턴화가 약 40%이상 발이 신발 안에서의 미끄러짐 현상이 일어났으며 충격력의 형태나 최대 압력분포도 높게 나타났다. Type A 신발의 경우 Type B와 같이 자연스러운 굴곡이 발의 볼쪽에서 일어나지 않고 전족부근에서 일어났다. 요약을 하면, 두 신발 간에 몇몇 차이점들이 발견되었고 A Type 배드민턴화의 기능을 향상하기 위해서 보완가능 요인들이 제시되었다.

• 한국운동역학회지
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• 제22권4호
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• pp.387-394
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• 2012

The purpose of this study was to compare and analyze the finger pressure and kinematic variables in the forehand hairpin net shot between skilled elite players and less skilled recreational players. Eight elite players(age: $18.1{\pm}0.8yrs$, height: $176.8{\pm}1.5cm$, weight: $640.9{\pm}48.6N$) with minimum of 6 years of experience and eight recreational players(age: $27.9{\pm}1.6yrs$, height: $177.1{\pm}6.1cm$, weight: $820.5{\pm}62.8N$) with less than one year experience were recruited in this study. For each trial being analyzed, four critical instants were identified from the video recordings: Right heel contact1 (E1), Right toe-off (E2), Right heel contact2 (E3), and Shuttlecock Impact (E4). Each hairpin net shot was broken into consecutive phases: E1~E2 (Right Landing Phase: RLP), E2~E3 (Sliding Step Phase: SSP), and E3~E4 (Impact Phase: IP). Temporal parameters, shuttlecock speed, linear and angular kinematics of body segments, and finger pressures were computed for this study. The results showed that The finger pressure of the ring finger and the middle finger for the skilled group during an impact had significantly greater than those of unskilled group. It is possible that all fingers were not used in the same manner when the racket was gripped in forehand hairpin. The result also suggested that the ring finger and the middle finger pushed the racket from top to bottom while having the mid-phalanx and proximal phalanx of index finger as an axis.

• 대한지역사회영양학회지
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• 제8권6호
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• pp.951-963
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• 2003

The purpose of this study was to investigate the eating behaviors, the self-perception of body images, the hematological indices and the nutrient intake of adolescent female athletes in Incheon. The subjects were 112 female athletes(track and fleld: n=32, target shooting: n=27, fencing n=29, swimming: n=14, badminton: n=10) from middle and high schools in Incheon. This cross-sectional study was conducted by means of a sol(-administered questionnaire. Fasting blood samples were obtained and analyzed for hemoglobin (Hb), hematocrit (Hct), ferritin, serum iron, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration(MCHC), unsaturated iron binding capacity (UIBC), total iron binding capacity (TIBC) and transferrin saturation (TS). Nutrient intakes obtained by means of the 3 day-recall method were analyzed using the Computer Aided Nutritional Analysis Program. Statistical analysis was conducted using the SPSS 10.0 program. Most of the female athletes had dietary problems such as eating unbalanced meals, skipping meals, and preferences for processed foods. More than 60% of the female athletes skipped breakfast. As for perception of their body images, track and field athletes in particular, controlled their weights significantly better than the other athletes (p<0.05). With regard to their physical exertion during exercise, 56.3% of the swimmers and 31.3% of the track and field athletes answered “very hard”, which was a significant difference (p< 0.001). More than 80% of the female athletes experienced vertigo during exercise (p< 0.01). Also more than 50% of the female athletes, with the exception of the badminton players, had experienced irregular menstruation (p<0.05). The average serum iron levels (p<0.05), the serum ferritin levels (p<0.05) and TS (p<0.05) of the track and field athletes was significantly lower as compared to that of the other athletes. The nutrient intakes of the female athletes, with the exception of Vitamin B$_{6}$, niacin and phosphorus were lower than the Korean Recommended Daily Allowances (RDA). In particular, the calcium and iron intakes of the female athletes were under 50% of the Korean RDA. Therefore, proper nutritional education and supplementation are required for female athletes to encourage desirable eating habits, as well as to improve their nutritional status and exercise performances.s.

• 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.

• 한국운동역학회지
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• 제12권2호
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• pp.91-107
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• 2002

이 연구는 배드민턴 경기기술 중 클리어에 대한 연구 대부분 경기분석 및 타법사용에 대한 연구에 국한되어 있어 여자중학생 배드민턴 선수를 대상으로 하이클리어 동작을 운동학적 변인으로 측정 분석하였다. 이 연구의 대상자는 충청북도에 위치한 C여자중학교 배드민턴 선수 4명이었으며, 동작의 분석 범위는 준비자세에서 동작의 시작순간, 라켓이 최대로 백 스윙 된 순간, 라켓과 셔틀콕이 임팩트 되는 순간, 임팩트 이후의 마무리 스윙동작까지로 단계별 동작을 설정하였다. 여자중학생 하이클리어 동작을 운동학적으로 분석한 결과 다음과 같은 결론을 얻었다. 피험자 대부분 백 스윙 단계에서 어깨 및 팔꿈치 관절을 충분히 회전하지 못한 것으로 나타났고, 특정 관절 부분에만 좋은 동작을 나타내 관절의 협용동작이 떨어지는 것으로 보였다. 피험자 S1과 S2가 임팩트 단계에서 어깨 및 팔꿈치 관절은 크게 천천히 스윙하다가 오른 손목관절 및 라켓헤드의 속도는 빠르게 나타나 다른 피험자 보다 관절의 협웅동작이 잘 이루어진 것으로 나타났다. 피험자 모두 성장기에 있는 학생으로서 관절의 유연성에 기인하여 오른 어깨각도 변화는 큰 각도를 보였고 각속도는 피험자 S3이 다른 피험자 보다 기술적 차이를 보여 개선될 점으로 나타났다. 피험자 모두 오른 팔꿈치 각도 변화는 비슷한 양상을 보였고 각속도에서 피험자 S2는 백 스윙단계부터 임팩트 시 심한 굴곡의 형태를 보여 힘을 효과적으로 사용하지 못한 것으로 나타났다. 피험자 모두 오른 손목각도의 변화는 백 스윙 직후 큰 각도를 이루지 못하고 임팩트 직후 손목의 빠른 굴곡이 형성되지 못하여 셔틀콕의 속도가 감속될 것으로 나타났다. 그러나 각속도는 피험자 S1과 S4는 임팩트 시 음(-)의 각속도 값을 보여 강한 스냅을 이용하고 빠르게 움직이고 있다고 볼 수 있다. 피험자 모두 임팩트 시 무릎각도의 크기는 큰 각도를 이룬 반면 고관절 각도는 작은 각도를 보여 무릎관절과 고관절과의 합성동작인 강한 허리힘을 이용하지 못한 것으로 나타났다.