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단기간 크레아틴 섭취가 태권도 선수의 신체조성, 등속성 근력 및 혈액성분에 미치는 영향
오세용,김창은,김의영 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1
The purpose of this study was to examine the effect of short-term creatine intake on constitution, isokinetic muscular power and constituent parts of the blood among taekwondo players. After 14 taekwondo players were divided into two groups, one group took creatine for six days and the other took placebo for the same short period of time. This experiment was conducted during training period, and then their constitution, isokinetic muscular power, blood creatinine and inorganic phosphate were measured. The findings of this study were as follows: 1. As for constitution, there was no significant disparity in weight, the amount of muscle, body fat volume and body fat rate between the creatine group and the placebo group. 2. Concerning isokinetic muscular power, the creatine group made a significant progress in set total work(J) and endurance rate(%) after the two groups were engaged in maximal flexion/extension exercise(180˚/s) 30 times. 3. When the constituent parts of the blood was gauged, the creatine group showed a significant increase in creatinine at rest and 30 minutes after recovery(p<.05), and the placebo group showed a significant reduction in creatinine at rest and immediately after workout(p<.05). In the former group, there was no change in inorganic phosphate, but the placebo group showed a significant increase at rest, immediately after workout and 30 minutes after recovery(p<.05). The above-mentioned findings suggested that the six-day creatine intake had an effect on the muscular power of the taekwondo players and their constituent parts of the blood, but it gave no positive impact on their physical constitution. Therefore, short-term creatine intake seemed to contribute to enhancing motor skills.
Yui Kishimoto,Naoki Okano,Ken Ito,Kensuke Takuma,Seiichi Hara,Susumu Iwasaki,Kensuke Yoshimoto,Yuto Yamada,Koji Watanabe,Yusuke Kimura,Hiroki Nakagawa,Yoshinori Igarashi 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
Background/Aims: Endoscopic evaluation of intraductal papillary mucinous neoplasms (IPMNs) is useful in determining whetherthe lesions are benign or malignant. This study aimed to examine the usefulness of peroral pancreatoscopy (POPS) in determiningthe prognosis of IPMNs. Methods: POPS with videoscopy was performed using the mother–baby scope technique. After surgery, computed tomography/magnetic resonance cholangiopancreatography or ultrasonography and blood tests were performed every 6 months during thefollow-up. Results: A total of 39 patients with main pancreatic duct (MPD)–type IPMNs underwent POPS using a videoscope, and theprotrusions in the MPD were observed in 36 patients. The sensitivity and specificity of cytology/biopsy performed at the time ofPOPS were 85% and 87.5%, respectively. Of 19 patients who underwent surgery, 18 (95%) patients had negative surgical margins and1 (5%) patient had a positive margin. Conclusions: In IPMNs with dilatation of the MPD, POPS is considered effective if the lesions can be directly observed. Thediagnosis of benign and malignant lesions is possible depending on the degree of lesion elevation. However, in some cases, slightlyelevated lesions may increase in size during the follow-up or multiple lesions may be simultaneously present; therefore, carefulfollow-up is necessary.
Yui Nanba,Yuhei Matsuda,Satsuki Watanabe,Mayu Takeda,Takafumi Abe,Kazumichi Tominaga,Minoru Isomura,Takahiro Kanno 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.5
Objectives: Although a few studies have investigated the relationship between kidney and oral function (number of remaining teeth), their results remain inconclusive. Therefore, this study aimed to investigate the relationship between kidney function and oral health in community-dwelling healthy elderlies and examine the factors associated with kidney function. Materials and Methods: We used cross-sectional data from the Shimane prefecture cohort recruited by the Center for Community-Based Health Research and Education in 2019. We collected clinical data on dental status, background factors and kidney function (estimated glomerular filtration rate [eGFR], mL/min/1.73 m2 and creatinine levels, mg/dL). Results: The study enrolled 481 participants, whose mean age was 66.7±7.4 years, and 223 (46.4%) participants were men. Multivariate analysis revealed significant correlations between eGFR (B=0.17, P=0.04), creatinine (B=–0.54, P<0.01), and the number of remaining teeth. The number of remaining teeth was associated with creatinine and eGFR, which are indicators of kidney function. Conclusion: This study suggests that preserving the teeth may prevent decline in kidney function. Dental professionals should provide instructions and professional care to reduce the risk of systemic diseases such as kidney dysfunction.
Assessing the displacement effect of exports with gravity trade model
Yui-Yip Laua,Man-Hin Chanc,Hong-Oanh Nguyen 인하대학교 정석물류통상연구원 2017 JOURNAL OF INTERNATIONAL LOGISTICS AND TRADE Vol.15 No.1
This paper employs the gravity model to investigate how the growth of China’s textile and clothing (T&C) exports is displacing the exports of other Asian developing countries over the 1990-2015 period. Aggregate analyses were undertaken, and the endogeneity of Chinese exports were accounted by applying instrumental variables with country fixed effects. It was found that there was a negative impact of China’s emergence on T&C exports on other Asian developing countries. We further explored whether such displacement effect varies across Asian countries and the results showed that a more pronounced effect was found in low-income countries than high-income ones. Our findings suggest that the export competitiveness of China’s neighbors, i.e. both more and less developed Asian countries, are affected by the emergence of China in T&C Trade. The implications of China’s One Belt, One Road initiative are also discussed.
M¨ossbauer Spectroscopy of Fe-doped Valence-fluctuating α-YbAlB4
Yui Sakaguchi,Shugo Ikeda,Hisao Kobayashi,Kentaro Kuga,Keita Sone,Satoru Nakatsuji 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The magnetic properties of high-quality 25 at.% Fe doped α-YbAlB4 with an orthorhombicPbam structure were investigated by using magnetization measurements and 57Fe M¨ossbauer spectroscopy. The temperature dependence of the magnetization along the a-axis showed anomaliesat TN2 7.7 K and TN1 10.4 K. Broadenings of the peaks in the M¨ossbauer spectrum wereobserved at temperatures below 6 K, which were due to the magnetic hyperfine fields transferredfrom the Yb magnetic moments. The evaluated transferred magnetic hyperfine field almost disappearsaround TN2. The anomalous temperature dependence of the transferred magnetic hyperfinefield reveals that the magnetic structure and the ordered magnetic moments of the Yb ions showcomplex temperature dependences at temperatures below TN1.
Yui-Yip Lau,Zhang Jiamian,Ng Adolf K. Y. 인하대학교 정석물류통상연구원 2020 JOURNAL OF INTERNATIONAL LOGISTICS AND TRADE Vol.18 No.3
Emergency logistics is an important means to deal with disasters and public crises. Since the outbreak of the severe acute respiratory syndrome (SARS) virus in 2003, China has established and developed an emergency logistics management system. With the outbreak of coronavirus disease (COVID-19) in China, its emergency logistics system is facing unfolded challenges. The main purposes of this study are to explore the development of China’s emergency logistics system in this context and identify the critical success factors for such systems. A series of focus groups are organized to collect the opinions of 24 interviewees from three Chinese cities, namely Wuhan, Shanghai, and Xi’an. Through the analysis, a framework of the critical success factors for emergency logistics in China is recreated. The key elements are demand forecasting and planning, inventory management, distribution network, and systematic information management. Findings suggest critical points on the design and imple-mentation of the emergency logistics operations during a chaotic period.
Intelligent Data Reduction Algorithm for Sensor Network based Fault Diagnostic System
Yui-su Youk,Sung-Ho Kim,Young-Hoon Joo 한국지능시스템학회 2009 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.9 No.4
In the modern life, machines are used for various areas in industries as the advance of science and industrial development has proceeded. In many machines, the rotating machines play an important role in many processes. Therefore, the development of fault diagnosis and monitoring system for rotating machines is required. An ubiquitous sensor network (USN) is a combination of the key computer science and engineering area technology including the wireless network, embedded system hardware and software, communication, real-time system, etc. It collects environmental information to realize a variety of functions. In this work, a data reduction algorithm for USN based remote fault diagnostic system which can be easily applied to previously built factories is proposed. To verify the feasibility of the proposed scheme, some simulations and experiments are executed.