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RISS 인기검색어
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- 저자 : 김효식(HyoSikKim) (검색결과 4 건)
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운동생리학 : 경기 전 훈련형태가 경영선수의 경기력과 leptin, insulin 및 free fatty acids 농도에 미치는 영향
김효식(HyoSikKim),표재환(JaeHwanPyo),최강진(KangJinChoi),이병두(ByungDooLee) 한국체육학회 2004 한국체육학회지 Vol.43 No.3
The purpose of this study was to determine the effects of training patters on serum leptin, insulin and plasma free fatty acids(FFA) as well as swim performance in highly competitive swimmers. Foruteen highly trained collegiate male swimmers were recruited and divided into two groups: either taper group (EXT: 19.86±1.57yrs: 175.86±4.10cm) or non-taper group (CON: 19.86±1.3Syrs 179.13±6.16cm). Subjects in EXT performed three training protocols which was 2 weeks de-training period, 8 weeks normal training period and 2 weeks taper period, while subjects in CON performed only two training protocols that consisted of 2 weeks de-training period and 10 weeks normal training period. Each training sessions were completed, all subjects undertook 100m sprint swimming and blood samples were taken for leptin, insulin and FFT concentration measurement.Following taper period, there was a not significantly faster 100m sprint swimming performance in EXT compared to CON. Sprint swimming record was also not significantly improved following taper period compared to normal exercise training period in EXT (56"70±2.03 second for normal training period vs. 55"99±2.11 second for taper period).The concentration of resting leptin, insulin and FFA from EXT was not significantly changed but FFA concentration was significantly altered in CON which did not have taper period. In conclusion, serum leptin and insulin concentration were not sensitive to prolonged intensity training and FFA was changed that training volume and duration these data suggest that leptin may not be useful in monitoring relative swim training stress in highly competitive swimmers.
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운동생리학: 수중과 대기에서의 breath holding이 최대 무호흡 시간과 생리적 반응에 미치는 영향
김효식(HyoSikKim),박정배(JeongBaePark) 한국체육학회 2002 한국체육학회지 Vol.41 No.5
The purpose of the present study was to investigate the effect of breath-hold time and physiological responses during under water diving and the atmosphere. Seven healthy versity caliber swimmers were volunteered as subject in the present study. All subjects performed 10 times breath-hold diving in the depth of 5m of swimming pool at 27℃Major finding demonstrated that repetitive breath-hold diving induce an increase in hypoxia of peripheral tissues. In the present study demonstrate that lactic acid concentration was increased to the time course and significantly decrease in breath-holding time during under water diving. However, the mechanism of an increase of breath-hold time at atmosphere in all subjects may remain to be solved. In conclusion, repetitive breath-hold induces an increase in hypoxia of peripheral tissues.
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가상현실 기반 3차원 공간에 대한 감정분류 딥러닝 모델
명지연(Myung, Jee-Yeon),전한종(Jun, Han-Jong) 대한건축학회 2020 대한건축학회논문집 Vol.36 No.4
The purpose of this study was to investigate the use of the Deep Neural Networks(DNN) model to classify user’s emotions, in particular Electroencephalography(EEG) toward Virtual-Reality(VR) based 3D design alternatives. Four different types of VR Space were constructed to measure a user’s emotion and EEG was measured for each stimulus. In addition to the quantitative evaluation based on EEG data, a questionnaire was conducted to qualitatively check whether there is a difference between VR stimuli. As a result, there is a significant difference between plan types according to the normalized ranking method. Therefore, the value of the subjective questionnaire was used as labeling data and collected EEG data was used for a feature value in the DNN model. Google TensorFlow was used to build and train the model. The accuracy of the developed model was 98.9%, which is higher than in previous studies. This indicates that there is a possibility of VR and Fast Fourier Transform(FFT) processing would affect the accuracy of the model, which means that it is possible to classify a user’s emotions toward VR based 3D design alternatives by measuring the EEG with this model.
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운동생리학 : 장시간의 운동이 노화에 따른 쥐 근육 내 pro- 및 macro-glycogen 동운에 미치는 영향
어수주(SuJuEo),이종삼(JongSamLee),조인호(InHoCho),표재환(JaeHwanPyo),박수연(SooYeonPark),김효식(HyoSikKim),이장규(JangKyuLee),김창근(ChangKeunKim) 한국체육학회 2005 한국체육학회지 Vol.44 No.5
The purpose of this study was to examine that the effect of one single bout of prolonged exercise on pro- and macro-glycogen mobilization in aging rat skeletal muscle. Forty eight rats were used and divided into three groups by age; 0 week (n=16), 16 weeks (n=16), 32 weeks (n=16). Each experimental group was further divided into two subgroups; either control (n=8) or exercise (n=8). All animals in exercise groups performed one bout of 3hr swimming exercise (30min × 6bouts). One week before the animals were sacrificed, oral glucose tolerance test (OGTT; 2 grams of glucoseㆍkg<sup>-1</sup> of body mass) was undertaken. At pre-determined time points, the animals were anesthetized by inhalation of ether, and red vastus lateralis muscle was rapidly dissected out and used for total glycogen content as well as pro- and macro-glycogen content measurement. Body mass was significantly heavier in 16wk (302.0±11.1 g) and 32wk (325.7±10.1 g) compared to 0wk (117.8±0.9g), but it was not statistically different between 16wk and 32wk. Three hours of swimming exercise significantly lowered plasma glucose concentration in all experimental groups (p<.001). Resting insulin concentration was only significantly different between 0wk and 32wk (not 16 wk). In aspects of serum insulin concentration, it was the highest in 32wk, and was the lowest in 0wk after 3hr swim exercise. Although resting total glycogen concentration was not significantly different among experimental groups, proglycogen concentration was significantly increased and macroglycogen concentration was significantly decreased in aged muscle. Although 3hr of swim exercise significantly lowered muscle PG content, MG level was not significantly altered. In summary, as aging process continued, PG concentration was increased and the degree of mobilization was continuously increased. This implies that PG may play a major role for energy production during prolonged exercise in aged rat skeletal muscles.
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