흡기근육 훈련과 유산소운동의 동시적용이 심폐반응과 폐기능에 미치는 영향

정현진,이대택 한국운동생리학회(구 한국운동과학회) 2012 운동과학 Vol.21 No.3

정현진, 이대택. 흡기근육 훈련과 유산소운동의 동시적용이 심폐반응과 폐기능에 미치는 영향. 운동과학, 제21권 제3호. 373-384, 2012. 흡기근 훈련을 동반한 유산소운동이 흡기근력, 폐기능, 최대산소섭취량(maximal oxygen uptake; VO2max)에 어떠한 영향을 미치는지 연구하였다. 24명의 건강한 대학생이 3 그룹으로 나뉘어 6주간의 실험에 참여하였다. 대상자들은 호흡근육훈련(RTG; n=8), 유산소성달리기훈련(REG; n=8), 호흡근육 및 달리기훈련(BTG; n=8) 그룹으로 나뉘었다. 실험전과 후 폐기능, 최대흡기압력(maximal inspiratory pressure; PImax), VO2max가 평가되었다. RTG는 실험기간 동안 흡기근육훈련 (inspiratory muscle training; IMT) 프로그램에 참여하였으며, PImax 의 50 % 강도로, 하루 2회, 주당 4일, 회당 30회 훈련하였다. REG는 개인별 VO2max의 70-75 % 강도로, 하루 1회, 주당 4회, 회당 30분 달리기 훈련을 하였다. BTG는 같은 기간 동안 IMT와 달리기훈련 모두에 참여하였다. 실험기간 중 대상자들의 체격변인과 폐기능 변인은 변하지 않았다. VO2max는 RTG, REG, BTG에서 각각 6.1±3.3 %, 5.9±6.6 %, 10.0±8.3 % 증가하였고(p< .05), PImax 또한 RTG, REG, BTG에서 각각 21.7±14.3%, 19.7±12.0 %, 27.0±12.1 % 증가하였으나(p< .05), 그룹 간의 유의한 차이는 나타나지 않았다. 결론적으로, 모든 그룹에서 향상이 관찰되었으며, 흡기근 훈련과 유산소운동을 동반한 그룹에서 VO2max와 PImax의 가장 큰 향상을 보였다. Jung, H. J., Lee, D. T. Impact of concurrent inspiratory muscle and aerobic exercise training on pulmonary function and cardiopulmonary responses, Exercise Science, 21(3): 373-384, 2012. The effects of inspiratory muscle training in conjunction with aerobic exercise on inspiratory muscle strength, pulmonary function, and maximal oxygen uptake (VO2max) were examined. Twenty four healthy collegiate men were divided into three groups; respiratory muscle training group (RTG; n=8), running exercise group (REG; n=8), and both respiratory muscle training and running group (BTG; n=8). Their pulmonary function, maximal inspiratory pressures (PImax), and VO2max were assessed before and after intervention. RTG underwent inspiratory muscle training(IMT) with load set to 50 % of PImax, 30 times per session, twice a day, 4 days a week REG ran on a treadmill at 70-75 % of VO2max for 30 min a day, 4 days a week, BTG participated both IMT and the running exercise. Participant`s anthropometric parameters and pulmonary function were not changed. VO2max increased by 6.1±3.3 %, 5.9±6.6 %, and 10.0±8.3 % in RTG, REG, and BTG, respectively (p< .05), and PImax also increased by 21.7±14.3 %, 19.7±12.0 %, and 27.0±12.1 % in RTG, REG, and BTG, respectively, but no group differences were found. Based on the study, although statistically insignificant, BTG showed the biggest increase of VO2max and PImax indicating a possible synergic effect of inspiratory muscle training and aerobic exercise on respiratory responses.

[설교자를 위한 성서읽기] 고난에는 아무런 뜻이 없을까

정현진 대한기독교서회 2018 基督敎 思想 Vol.720 No.-

Nodular Fasciitis in the Finger: The Sonographic Findings and a Literature Review

정현진,정동해,정유미,이현호,최혜영,백종륜,이신우 대한초음파의학회 2011 ULTRASONOGRAPHY Vol.30 No.2

A 39-year-old woman presented with a rapidly growing nodule on the right thumb. An ultrasound study demonstrated a mass located in the deep subcutaneous tissue on the ulnar side of the interphalangeal joint. Incisional biopsy yielded the diagnosis of nodular fasciitis. We discuss the ultrasound appearance of nodular fasciitis as reported in the literature and how to make the differential diagnosis of an echogenic finger mass.

클라우드 이상 행위 탐지를 위한 1-D STM 블록 기반 Stacking CNN 모델

정현진,홍석원,김진성,최석환 한국지능시스템학회 2024 한국지능시스템학회논문지 Vol.34 No.1

As a core technique of cloud service, cloud computing technique provides userswith the resources of a specific physical server without spatial constraints. Eventhough such cloud computing technique performs data collection, analysis, anddecision-making quickly and efficiently, it is vulnerable to security threats. Thus,an intrusion detection system is needed to defend against such security threats. Recently, convolutional neural network(CNN)-based anomaly detection methodshave been actively studied. However, the existing CNN-based anomaly detectionmethods have limitations in extracting detailed and abstract-level features forabnormal behaviors. Therefore, In this paper, we propose an 1-D STM block whichovercomes the limitations of existing CNN-based anomaly detection methods. Also,we propose a new anomaly detection method using Stacking CNN model based onthe 1-D STM blocks. From the experimental results, we validate that the proposedanomaly detection method is effective in mitigating cloud security threats. 클라우드 컴퓨팅 기술은 클라우드 서비스의 핵심 기술이며, 사용자에게 공간의 제약 없이 특정 물리 서버의 자원을 필요한 만큼 제공한다. 이러한 클라우드 컴퓨팅 기술은 데이터 수집및 분석, 의사 결정을 빠르고 효율적으로 수행하는 장점을 가지지만, 보안 위협에 취약한 단점을 가진다. 따라서, 클라우드 컴퓨팅 기술의 보안 위협에 대응하기 위해 침입 탐지 시스템이 필요하다. 최근 침입 탐지 시스템 중 합성곱 신경망(CNN) 기반 이상 행위 탐지 연구가활발히 진행되고 있다. 하지만, CNN 기반 이상 행위 탐지 모델은 이상 행위에 대한 세부 수준 및 추상 수준의 특징 추출 한계점이 존재한다. 따라서, 본 논문에서는 CNN 기반 이상 행위 탐지 모델의 한계점을 극복할 수 있는 1-D STM 블록과 이를 기반으로 설계한 StackingCNN 기반 이상 행위 탐지 방안을 제안한다. 실험을 통해 Stacking CNN 기반 이상 행위 탐지 방안은 클라우드 보안 위협에 대응할 수 있는 이상 행위 탐지 모델임을 검증하였다.

[설교자를 위한 성서읽기] 계시 받음의 허와 실

정현진 대한기독교서회 2018 基督敎 思想 Vol.719 No.-

Improvement of CuO photostability with the help of a BiVO4 capping layer by preventing self-reduction of CuO to Cu2O

정현진,류혁현,배종성 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-

We fabricated BiVO4/CuO heterojunction photoelectrodes by depositing BiVO4 capping layers on CuOphotoelectrodes and investigated the photocurrent density and photostability of the photoelectrodesaccording to the number of BiVO4 depositions using the spin coating method. The morphological, structural,optical, electrical and photoelectrochemical properties of the BiVO4/CuO photoelectrode wereinvestigated using field-emission scanning electron microscopy, X-ray diffraction (XRD), X-ray photoelectronspectroscopy (XPS), UV–visible spectroscopy, electrochemical impedance spectroscopy, and threeelectrodepotentiostat/galvanostat equipment. XRD and XPS results showed that the crystallinities andbinding energies of BiVO4/CuO photoelectrodes were affected by BiVO4 compared to the CuO photoelectrode. In particular, XPS measurements showed that the Cu 2p3/2 peak binding energies of the CuO photoelectrodeand BiVO4/CuO photoelectrodes with poor photostabilities shifted to those of Cu2O, showingself-reduction from CuO to Cu2O, after photostability measurement. In contrast, BiVO4/CuO photoelectrodeswith proper BiVO4 deposition cycles showed good photostabilities without self-reduction. TheBiVO4/CuO photoelectrode with 4 BiVO4 deposition cycles showed a high photostability of 76.2% via photocorrosionsuppression, which is a much improved result compared to the single CuO photoelectrodewith a photostability of 13.1%. However, the photocurrent density of 1.77 mA/cm2 (vs. SCE at0.55 V) is still low, and further study is necessary.

Infected Lymphocele Extending to the Leg after Robot-Assisted Radical Prostatectomy and Pelvic Lymph Node Dissection

정현진 대한요로생식기감염학회 2017 Urogenital Tract Infection Vol.12 No.3

Lymphocele infection is a rare complication after radical prostatectomy and pelvic lymph node dissection (PLND). Here, we present a case of lymphocele infection that extended to the leg two months after robot-assisted laparoscopic radical prostatectomy and PLND. The patient was a 60-year-old man whose chief complaints were fever, chills, and right thigh pain. Computed tomography showed infected lymphocele with right thigh abscess. After percutaneous drainage and intravenous antibiotics, the infection and right thigh abscess were resolved.

Carbon Monoxide Binding to NicKel(I) Macrocyclic Complexes Generated by Electrochemical Method

정현진,방효춘,백명현,Jeong, Hyeon Jin,Bang, Hyo Chun,Baek, Myeong Hyeon Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.5

Creatine Kinase 동위효소 MB (CK-MB)의 정량에 있어서 <질량>과 <활성>의 비교

정현진,이도훈,송정한,조성석,김진규 대한임상검사정도관리학회 1991 臨床檢査와 精度管理 Vol.13 No.1

직난시 및 도난시에 따른 동축 소절개 백내장 수술의 난시와 고위수차의 비교분석

정현진,정병주,황형빈,김현승,Hyun Jin Jeong,Byung Ju Jung,Hyung Bin Hwang,Hyun Seung Kim 대한안과학회 2014 대한안과학회지 Vol.55 No.2

Purpose: To assess the changes of corneal astigmatism and higher order aberrations (HOAs) of the anterior and posterior corneal surface after cataract surgery with on-axis clear corneal incision in eyes with-the-rule (WTR) astigmatism and against-the-rule (ATR) astigmatism. Methods: This study included 50 patients who underwent phacoemulsification and IOL insertion through a 2.8-mm on-axis clear corneal incision. The eyes were divided into two groups: (1) 26 eyes with WTR astigmatism with a superior incision and (2) 24 eyes with ATR astigmatism with a temporal incision. During the follow-up period, visual acuity was measured, and the surgically induced astigmatism (SIA) and HOAs of the anterior and posterior corneal surface were measured with Pentacam? (Occlus, Wetzlar, Germany) preoperatively and 1 week, 1 month, and 2 months postoperatively. Results: There were no significant differences in UCVA and BCVA between the two groups. HOAs increased in both groups 1 week after surgery, but no significant differences were found between the groups (p > 0.05). Surgically induced astigmatism was larger in the WTR group than in the ATR group (p < 0.05). At postoperative 2 months, there were significant differences in HOAs between the two groups, and there were statistically significant differences in HOAs, oblique trefoil at front side, and in HOAs, horizontal coma at rear side (p < 0.05). Conclusions: In conclusion, superior incision in eyes with WTR astigmatism resulted in higher SIA compared to temporal incision in eyes with ATR astigmatism. Moreover, HOAs was significantly decreased in eyes with WTR astigmatism with superior incision. Thus, superior incision could be more effective in reducing corneal astigmatism in eyes with WTR astigmatism. J Korean Ophthalmol Soc 2014;55(2):182-189