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곽정구,백진호,윤동섭,윤희중,이종훈 韓國體育大學校附屬 體育科學硏究所 1994 韓國體育大學校附屬 體育科學硏究所論文集 Vol.13 No.1
The purpose of this study is to analyze and compare times, distances, degrees and velocities in long instep kick and shooting. Five women, soccer player, were selected as the subjects. 3-D cinematography method and Wilcoxon signed rank test were employed in this study. From left heel touch down to impact, the results of this study are as follows l. In the swing phase, the average time of long kick and shooting is 0.100sec and O.104sec, respectively. 2. There is no significantly difference the distance between kicking foot and suppoeting foot, but it shows that there is significantly difference between ball and supporting foot. 3. There is no significantly difference between kicking limb and supporting limb in the projecting angle of ball, leaning angle of COG, angle of ankle, knee and hip. 4.Velocity factors are no diference in initial ball, COG, segments of foot, shank and thigh in kicking limb.
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질문지법을 이용한 성인의 최대산소섭취량 추정 : A questionnaire approach
김현수,곽정구,김은희,양미란,田中喜代次 대한스포츠의학회 1995 대한스포츠의학회지 Vol.13 No.2
It has been well known that maximal oxygen uptake(V˙o_2max) is ca-nsidered a good indicator or ca diorespiratory fitness of aerobic power. However, direct measurement of V˙o_2max requires expensive laboratory equipments such as oxygen analyzer and carbon dioxide analyzer. The purpose of this study was threrfore to predict V˙o_2max from a simplified questionnaire pertaining to the evaluation of cardiorespiratory endurance and to evaluate cross-validation of the developed questionnaire could be generalized to other samples. The questionnaire consisted of 5 Question concerning the current walking ability, long-running ability in youth, current exercise habits, responses to rush-up of stairs(imaginatory response), and body composition. The V˙o_2max estimated by our questionnaire was not significantly different from the criterion measured V˙o_2max. Test-retest reliability of the questionnaire on 31 subjects was 0.92 as determined by Spearman's correlation coefficient. The correlation between the measured and V˙o_2max(ml/kg/min) estimated from the simplified questionnaire was 0.868(SEE=5.12ml/kg/min) in men(n=201) and 0.853(SEE=5.54ml/kg/min) in women(m=127), indicating either a relatively high relationship between the two variables. The cross-validity of the questionnaire using directly measured V˙o_2max as the criterion was very good(r=0.874). These results suggested that the indirect assessment of cardiorespiratory fitness from questionnaire survey accurately estimates V˙o_2max, and is safe and suitable for measuring aerobic power in epidemiologic studies of people between the ages of 30-70 yr. However, the slightly less acurate V˙o_2max prediction were observed in the highly active men and elderly.
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백진호,이순호,곽정구,전명규 한국스포츠정책과학원(구 한국스포츠개발원) 2000 체육과학연구 Vol.11 No.2
반력 측정 시스템의 개발은 운동종목의 특징에 따라 기구나 조건이 다양하고 많은 제한점을 갖는다. 특히 로드셀의 제작은 운동종목의 조건과 특성에 맞는 설계에서 어려움이 크고, 특히 온도의 변화 그리고 셀의 응력이나 비틀림에 의한 신호의 왜곡을 보정하는 메카니즘이 가장 중요하다. 본 연구는 무선 스케이트반력 측정 시스템을 개발하였는데 시스템의 기능은 트리거 신호를 샘플링 & 홀드의 방법으로 시간차 없이 실시간으로 수신하고, 신호에 대한 양자화의 조절 기능을 높일 수 있는 증폭기와 신호 조절기를 고 정밀도화 하였으며, 마이크로 콘트롤러 및 인터페이스를 이용한 시스템의 소형화를 구현하였다.
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