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.

수학과정중심평가에 대한 소고 (초등수학2학년 현장 적용 사례 중심으로)

정현진 한국수학교육학회 2016 수학교육 학술지 Vol.2016 No.3

[설교자를 위한 성서읽기] 고난에는 아무런 뜻이 없을까

정현진 대한기독교서회 2018 基督敎 思想 Vol.720 No.-

Is a secondary procedure necessary in every case of failed endoscopic treatment for vesicoureteral reflux?

정현진,임영재,이용승,김명주,한상원 대한비뇨의학회 2015 Investigative and Clinical Urology Vol.56 No.5

Purpose: Endoscopic treatment (ET) has become a widely accepted procedure for treating vesicoureteral reflux (VUR). However, patients followed up after ET over long periods have reported persistent or recurrent VUR. We evaluated the natural course of failed ET in patients who required further treatments to help physicians in making decisions on the treatment of VUR. Materials and Methods: We retrospectively reviewed the medical records of patients who were diagnosed with VUR and underwent ET from January 2006 to December 2009. A total of 165 patients with 260 ureters underwent ET. We compared the parameters of the patients according to ET success or failure and evaluated the natural course of the patients after ET failure. Results: Mean VUR grade and positive photon defect were higher in the failed ET group than in the successful ET group. Six months after the operation, persistent or recurrent VUR was observed in 76 ureters (29.2%), and by 16.3 months after the operation, VUR resolution was observed in 18 ureters (23.7%). Twenty-five ureters (32.9%) without complications were observed conservatively. Involuntary detrusor contraction was found in 1 of 9 (11.1%) among the secondary ET success group, whereas in the secondary ET failure group, 4 of 6 (66.7%) had accompanying involuntary detrusor contraction. Conclusions: Patients in whom ET fails can be observed for spontaneous resolution of VUR unless they have febrile urinary tract infection or decreased renal function. Urodynamic study may be helpful in deciding whether a secondary procedure after ET failure is necessary.

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

이분척추증 환아에서 비디오요역동학검사의 반복 검사가 필요한가?

정현진,김명주,임영재,홍창희,한상원 대한비뇨의학회 2009 Investigative and Clinical Urology Vol.50 No.10

Purpose: A videourodynamic study is useful for examining the functional and structural problems of the urinary tract simultaneously. Due to its invasiveness, however, it is important to obtain as much information as is possible as the study is being conducted. The purpose of this study was to evaluate the results of a repeated videourodynamic examination in spina bifida children. Materials and Methods: Between January 2005 and July 2006, a total of 48 patients who were diagnosed with spina bifida and underwent repeated videourodynamic studies were enrolled in this study. We compared variables including compliance, involuntary detrusor contraction (IDC), cystometric bladder capacity (CBC), maximum detrusor pressure, and post-voiding residual urine (PVR) between the initial and repeated studies. Results: During the repeated studies, cases of IDC decreased significantly (p<0.05) compared with the initial studies. No other significant differences were found in terms of compliance, CBC, maximum detrusor pressure, and PVR. Conclusions: There were no significant differences in terms of compliance, CBC, maximum detrusor pressure, and PVR between initial and repeated studies. However, the number of patients who had IDC decreased significantly in the second study. Nevertheless, we conclude that the first examination in this study was enough to evaluate the overall function and structure of the urinary tract. We believe that repeat studies are not necessary in children with spina bifida.

GPU를 이용한 LF 영상 기반 VoI 이미지 재현의 가속

정현진,윤정일,정원식,이영민 한국방송·미디어공학회 2019 한국방송공학회 학술발표대회 논문집 Vol.2019 No.6

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