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흰쥐에서 음경발기 평가의 척도로서 음경해면체내압측정술 확립
송윤섭,김용준,이광우,김준모,문기혁,박영호,민영기,유형균,김형건 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1
Purpose: Because studies about the control of penile erection at the entral nervous system was dependent on the animal experiments, establishment of measuring penile erection is important to evaluate the effects changes at the central nervous system on the penile erection. Intracavernous pressure measurement in rats has been introduced as a suitable index for the evaluation of penile erection but this method is invasive and technically difficult. So, we established the intracavernous pressure measurement in rats as the experimental index for penile erection. Materials and Methods: 42 male adult Sprague-Dawley rats (250-300gm) were divided to saline or papaverine treated group. Rats were placed on a heating table to maintain their body temparature and anesthetized with 50mg/kg of pentobarbital sodium by intraperitoneal injection. A cannula was inserted to the left carotid artery to measure systemic blood pressure. Saline (0.05, 0.1ml), papaverine(0.05, 0.1, 0.25, 0.5, 1.0, 2.0mg) were injected intracavernously via 26 guage needle filled with saline or papaverine which connected to pressure transducer and polygraph was inserted into the corpus cavernosum on one side to inject the drug and to measure intracavernous presure. Results: Properly executed insertion and intracavernous administration produced a instantaneous but transient rise in intracavernous pressure that substantially stabilized and maintained at 5.4±0.4mmHg. Intracavernous pressure and duration of penile blood flow following intracavernous injection of papaverine are increased comared to those of saline. Conclusions: Monitoring intracavernous pressure in rats represents a suitable index for the evaluation of penile erection in small laboratory animals.
Jin-hong Kim,Jun-hyuck Park,Jong-eun Yim 보안공학연구지원센터 2016 International Journal of Bio-Science and Bio-Techn Vol.8 No.6
Parkinson's disease is a chronic progressive disease of the nervous system associated with the basal ganglia and is characterized by rigidity, bradykinesia, tremor, and insta-bility of posture. In addition, it causes indirect disabilities and complications. The aim of this study was to evaluate the effects of self-check home exercise on fall prevention in patient with Parkinson’s disease. The present study included 20 patients who met the study criterion, which was a diagnosis of Parkinson's disease. The present study was conducted over 12 weeks in the exercise therapy center of the G University Hospital. Periodically, once a month at the first, fifth, and ninth-week sessions, a neurosurgeon, a rehabilitation physician, a nurse in charge of neurosurgery programs dedicated to Park-inson's disease, a physiotherapist, and an occupational therapist attended the home exer-cises program to provide group lessons to subjects, to provide feedback regarding the home exercises program, and to carry out a self-monitoring checklist performance rate. The results showed significant differences in TUG, FRTA, FRTP, FES, STS, 10MWT, MBI, and QoL (p<.05). The present study involved showing patients with Parkinson's disease how to easily perform home exercises and how to provide ongoing feedback for motivation. The home exercises program of the present study is expected to improve the lives of patients with Parkinson's disease.
이상국,이선기,이준신,박종혁 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-
The objective of this study is to estimate the feasibility of acoustic emission method for the internal leak from the valves. In this study, valve leak tests using various types of specimen simulated seat damage were performed in order to analyzer acoustic emission properties when leaks arise in valve seat. As a result of leak test for specimens simulated valve seat, we conformed that leak sound level increased in proportion to the increase of hole diameter and leak velocity, and decreased in proportion to the increase of leak depth. And also, leak sound level has hysteresis for leak velocity. From the experimental results, it was suggested that the acoustic emission method for monitoring of leak was feasible.
Jun-Hyuck Park,Junke Pan,Hongje Jang,Jong-Eun Yim 물리치료재활과학회 2023 Physical therapy rehabilitation science Vol.12 No.2
Objective: Transcutaneous electrical nerve stimulation (TENS) is a treatment method for pain, and it can be divided into conventional TENS (C-TENS) and acupuncture-like TENS (A-TENS). More recently, high power lasers have increasingly been used to reduce pain caused by arthritis, residual neuralgia, and musculoskeletal disorders. The aim of this study was to compare the laser needle with C-TENS and A-TENS in terms of pain and blood flow in healthy people, as well as to confirm that the laser needle can replace TENS to treat pain. Design: A randomized controlled trial. Methods: The selected participants were divided using Minimize computer software into a laser group (n=13), a C-TENS group (n=13), and an A-TENS group (n=14); they underwent a pre-test for blood flow and pain in their forearm. The three groups received their respective interventions; they then underwent a second pain and blood flow test on the same spot. Results: No significant differences were observed in the A-TENS group between the pre- and post-tests, and a comparison among the three groups revealed no significant differences between the laser needle group and the C-TENS group in terms of pain. Regarding blood flow, no significant differences were found between the pre- and post-tests in the laser needle group; a comparison among the three groups only revealed a significant between the laser needle and A-TENS groups. Conclusions: This study confirmed that the laser needle can be used to treat pain when it is necessary to control blood flow.
( Jun Hyuck Park ),( Won Jae Choi ),( Seung Won Lee ) 물리치료재활과학회 2013 Physical therapy rehabilitation science Vol.2 No.2
Objective: Whole body vibration training is a relatively new approach for enhancement of muscle strength, physical performance, and balance. The aim of this study was to assess the effect of unilateral whole body vibration training. Design: One group pretest-posttest design. Methods: Sixteen healthy, physically active volunteers participated in this study. Whole body vibration was applied with a frequency of 20 Hz and an amplitude of 3 mm for 3 minutes. Muscle performance and static balance were assessed before and after unilateral whole body vibration training. One leg standing broad jump test was measured to determine muscle performance which is closely linked to lower extremity muscle function. The good balance system was used in evaluation static balance. All test were measured 3 times and the average value was analyzed. Results: Jumping length was significantly improved by 0.11m in all participants after intervention (p<0.05). Among static parameters, significant results were observed where in the eyes opened condition, X-speed (medial-lateral sway) changed from 4.20 mm/s to 4.95 mm/s, Y-speed (anterior-posterior sway) changed from 5.77 mm/s to 6.54 mm/s and velocity moment changed from 12.77 mm2/s to 13.57 mm2/s (p<0.05). In the eyes closed condition, X-speed changed from 4.34 mm/s to 4.85 mm/s, Y-speed changed from 7.84 mm/s to 8.16 mm/s and velocity moment changed from 16.03 mm2/s to 16.11 mm2/s (p<0.05). Conclusions: Immediate unilateral whole body vibration improved muscle performance but impaired static balance in young adults.
Hyuck-Se Kwon,Jun Hong Park,Yang-Seok Oh,Hyun-Kyung Shin,Sang-Jae Park,Byung-Sik Gang,Jae-Gun Park,Jin-Kyung Kim 한국실험동물학회 2006 Laboratory Animal Research Vol.22 No.4
The ethanol extracts from bark of red pine, Pinus densiflora Siebold et Zuccarini, was examined for single-dose and seven-day repeated-dose toxicity with Sprague-Dawley rats. The single oral dose of the extracts at 5000 ㎎/㎏ did not produce mortality or abnormal gross appearance of the internal organs of rats. In seven-day repeated-dose toxicity study, the extracts administered at doses of 100, 1000, or 5000 ㎎/㎏ for 7 days. There were no significant changes of body weights and organ weights during the experimental period. Hematological analysis and clinical blood chemistry have no revealed toxicity effect of the ethanol extracts from bark of Pinus densiflora. Pathologically, neither gross abnormalities nor histopathological changes observed between controls and treated rats both sexes. Collectively, these data suggest that the ethanol extracts from bark of Pinus densiflora have a high margin of safety.