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밸런스와 근력 훈련이 발목 불안정성을 가진 농구 선수들의 기능적 능력과 근활성도에 미치는 영향
양선철(Sun Chel Yang),정제순(Jae-Soon Chung) 한국발육발달학회 2017 한국발육발달학회지 Vol.25 No.1
The purpose of this study was to compare the effects of the simple and integrated lower extremity strength training in basketball players with the functional instability of the ankle. A total of 28 high school male basketball players with Chronic ankle instability(CAI) participated in this study. CAI was determined by the Identification of Functional Ankle Instability Questionnaire(The Cumberland Ankle Instability Tool), and participants were randomly assigned to a balance exercise group (BEG: n=14), integrated muscular strength exercise and balance exercise group (IEG: n=14). Both rehabilitation groups completed their protocols 5 times/wk for 16 weeks. Before the interventions, participants were pretested by completing the Romberg test for time, the triple hop test for distance, the Y-Balance test for perceived ankle instability and EMG(Electromyography) test for muscle activity in calf. Participants were again tested 6 weeks later. All data were analyzed by t-test of SPSS. The triple hop test were significantly increased than pre-test in the IEG(p<.001) and compared with the BEG(p<.05). Both group were significantly increased than pre-test in Romberg test(p<.05, p<.01, p<.001), Y-Balance test(p<.05, p<.001), muscle activity(p<.001) as well. In conclusion, From the results of this study, it appears that balance and strength training(IEG) were improved dynamic ankle performance in patients with ankle instability. Applying combined muscle strengthening and balance exercises to those who have functional ankle instability is more effective than applying only balance exercises.
송원훈,백진환,양선철,최의근,박성민,정창욱 대한비뇨의학회 2020 Investigative and Clinical Urology Vol.61 No.1
Purpose: Although percutaneous catheter-based ablation of renal sympathetic nerve fibers has been used in the treatment of patients with resistant hypertension, a recent phase III study did not confirm its efficacy. In this study, we developed a novel laparoscopic renal denervation system and evaluated its safety and initial feasibility using an animal model. Materials and Methods: A novel surgical instrument that uses a smart algorithm with temperature-monitoring feedback was developed. We used 4 male pigs (6 weeks old, weighing approximately 45 kg each) to evaluate the safety and efficacy of the laparoscopic renal denervation system. We performed immunohistochemical staining analysis after renal denervation using various tip temperatures and over various durations through an open approach. Results: When the temperature of the outer wall of the renal artery was maintained at 90℃ for 180 seconds, the artery was completely denervated without damaging its inner layer, as evaluated using Masson's trichrome staining. When the temperature ranged from 70℃ to 90℃ and the duration ranged from 90 to 420 seconds, partial or complete denervation without significant vessel injury was confirmed with anti- growth-associated protein 43 and anti-S100 staining. Conclusions: This animal study confirmed the safety and feasibility of the novel laparoscopic renal denervation system. A safe and effective protocol was developed with ablation at a constant tissue temperature of 70℃ to 90℃ within 180 seconds. However, further developments are necessary before its clinical use.