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지지면 간격변화에 따른 푸시업(Push-up) 굽힘동작과 푸시업 플러스(Push-up plus) 동작시 상지 근육의활성도 비교
김은영,박흥기,안병헌,Kim, Eun-Young,Park, Hung-Gi,Ahn, Byung-Heon 대한물리치료과학회 2008 대한물리치료과학회지 Vol.15 No.3
Purpose : The purpose of this study is to examine the muscle activity of shoulder stabilization according to change of supporting base interval between push-up bend and push-up plus position and is to prevent or treat a shoulder injury by the most effective exercise for rehabilitation. Methods : This study analyzed the muscle activity according to change of supporting base interval between push-up bend and push-up plus movement. The participants without neuromuscular disease were 25 students - 12 males and 13 females - all twenty or over and the surface electrode of EMG attached on pectoralis major, triceps long head, middle trapezius, lower trapezius, serratus anterior and latissimus dorsi. The process has practiced 3 sessions of supporting base interval - narrowing interval, two shoulder interval, broad interval - by push-up bend and push-up plus movement. Result : 1. The muscle activity of pectoralis major was significantly increased according to narrow interval of supporting base on push-up plus movement and was significant difference(p<.05). 2. The muscle activity of biceps was significantly increased according to narrow interval of supporting base on push-up bend movement(p<.05). 3. The muscle activity of middle or lower trapezius was a difference according to change of supporting base on push-up bend and push-up plus movement but was not significant difference. 4. The muscle activity of serratus anterior was significantly increased according to broad interval of supporting base on push-up bend movement(p<.05). 5. The muscle activity of latissimus dorsi was significantly increased according to broad interval of supporting base on push-up bend movement(p<.05). Conclusion : These results lead us to the conclusion that push-up bend exercise have the effect of muscle strength of biceps on narrowing interval, of serratus anterior or latissimus dorsi on broad interval and push-up plus exercise have the effect of muscle strength of pectoralis major on narrowing interval of support base.
구형 BGO 섬광 검출기에 대한 감마선 에너지 스텍트럼 계산
도시홍,김종일,박흥기,추민절,정중현,김기동,이대원 ( Sih Hong Doh,Hung Ki Park,Jong Il Kim,Min Cheal Chu,Jung Hyun Jeong,Gi Dong Kim,Dae Won Lee ) 한국센서학회 1995 센서학회지 Vol.4 No.4
The γ-ray deposition spectra were calculated by Monte Calro method to obtain the scintillation characteristics of the γ-ray for BGO scintillation detector with the spherical shape of 1.25 cm radius. The code used in calculating the γ-ray deposition spectra was made for personal computer with qbasic language. Also the γ-ray energy spectra of ^(22)Na, ^(137)Cs and ^(207)Bi were measured with the detector. The energy dependent resolution below 2000 keV for the detector was determined by estimating the standard deviation of the photopeak fitted with gaussian function, and x² fitting using Nardi`s empirical formula. The measured spectra of ^(22)Na and ^(137)Cs were compared with the broadened spectra which were obtained by broadening the calculated γ-ray deposition spectra with the energy dependent resolution. The absolute efficiency and the intrinsic peak efficiency of the detector were obtained by calculating the γ-ray deposition spectrum with the code.