Kim J.-S.,Kyungwoon University |
Oh D.-W.,Cheongju University
European Journal of Physiotherapy | Year: 2017
This study aimed to describe, and report the results from a detailed procedure of a diaphragmatic breathing exercise using real-time ultrasound imaging biofeedback (RUIB) training. The subject was a 16-year-old man with an incomplete cervical spinal cord injury (CSCI) caused by spinal intramedullary arteriovenous malformations at the level of his C4–C5 spinal cord. Although he could walk independently, decreased respiratory function was one of the major factors reducing his ability to perform daily activities, such as walking. Outcome measures included a 10-meter walk test (10MWT) results, balance ability in eyes open and closed, diaphragm movement distance on sniffing, and forced vital capacity. All parameters except the 10MWT results appeared to significantly improve during the intervention phase. Data points during both the intervention and follow-up phases showed improved trends in comparison to those in the baseline phase, indicating that intervention might be beneficial in improving respiratory function and performance and that these gains can be maintained after the intervention. Our findings suggest that the use of RUIB during breathing exercise may be valuable in managing respiratory and physical function of patients with cervical cord injuries. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
Byeon S.J.,Daegu University |
Kim K.H.,Kyungwoon University
Journal of Physical Therapy Science | Year: 2017
[Purpose] This study aims to investigate the effects of exercise using an ergometer with swaying saddle on chronic lower back pain. [Subjects and Methods] Thirty-three normal adults (university students) with chronic lower back pain were randomly recruited. The flexibility and strength of muscles were measured before and after an 8-week intervention. Belly-bike, an ergometer with a swaying saddle, was used. The duration of intervention was 30 minutes a day, 3 times a week. To measure the level of pain, visual analogue scale (VAS) and Korean Oswestry Disability Index were used. In addition, flexibility tests such as straight leg raising and forward reaching test in the long sitting posture were used to confirm back muscle shortness. Activations of the erector spinae muscle, gluteus medius muscle, rectus femoris muscle, and vastus lateralis muscle were also measured by electromyography before and after the intervention. Electromyography of muscles around the pelvis was performed and functional tests were conducted. [Results] The flexibility and strength of the muscles significantly increased post-intervention. Functional test scores for the forward reaching test and straight leg raising test significantly improved in the Belly-bike group. [Conclusion] The results show that exercise using the Belly-bike could be effective in reducing lower back pain. © 2017 The Society of Physical Therapy Science. Published by IPEC Inc.
Choi E.H.,Yeungnam University |
Kim E.H.,Kyungwoon University
International Journal of Future Generation Communication and Networking | Year: 2016
This study was purposed to verify the effect of repeated exposure and role to play in simulation-based education on hospital emergency care. 144 nursing students, at Y University in Daegu, Korea, had participated in this non-equivalent control group quasi-experimental study. All participants had 6 time simulation-based educations on hospital emergency care. The experimental group (n=65) had experience as a leader but the control group (n=79) didn’t have. Data were collected from October 01 to December 23 in 2014 regarding problem solving, critical thinking, satisfaction of simulation, performance evaluations by evaluator and students themselves on simulation-based education. It was analyzed with two sample t-test and repeated measured ANOVA using PASW Statistics (SPSS) 21.0 program. Satisfaction (t=0.257, p=.798), self-evaluation (t=-1.650, p=.102), and performance (t=0.147, p=.883) scores between two groups were not significantly different after the educations. Performance scores were significantly increased by the number of the simulation-exposure (F=412.724, p<.001), but not significantly different by the leader experience (F=1.246, p=.266). This study would support that repeated simulation-exposures improved the performance level on hospital emergency care regardless of role of simulation settings. © 2016 SERSC.
Chae S.-Y.,Kyungwoon University
Journal of Physical Therapy Science | Year: 2012
[Purpose] Changes in cardiopulmonary function during wheelchair propulsion on a treadmill were measured using wheelchairs according to backrest angle adjustment. [Methods] Twenty-two healthy male subjects were the subjects. Oxygen consumption (VO 2, ml/min), heart rate (HR, beats/min), carbon dioxide emissions (VCO 2, ml/ min), oxygen uptake per body weight (VO 2, ml/kg/min), and respiration frequency (Rf) were used as the measurement variables for cardiopulmonary data. [Results] The peak value, average value and value at rest were compared. When resting, the value did not differ except for VO 2, and the peak value, did not differ except for VCO 2. However, the average value in all except VO 2/kg (at 13 degrees) was significantly lower than 3 degrees (93°). [Conclusion] A 13° wheelchair backrest angle (103°) provides a lower cardiopulmonary workload than the base angle (3°). A training program for good seating and posture needs to be provided.
Jang M.G.,Yeungnam University |
Jang M.D.,Kyungwoon University |
Park J.H.,Yeungnam University
Journal of Chromatography A | Year: 2017
Doxycycline (DOX) is one of the tetracycline class of antibiotics and has not been examined for its enantioseparation abilities previously. The purpose of the present work was to evaluate DOX as a chiral selector (CS) using capillary electrophoresis (CE) in nonaqueous mode. Systematic experiments were performed to investigate the effects of concentration of CS, compositions of organic solvents and background electrolytes, applied voltage on chiral separation of a set of acidic chiral compounds. Excellent resolutions of enantiomers of acidic chiral compounds were attained in a background electrolytes composed of 50:50 acetonitrile/methanol + 214. mM acetic acid+ 63. mM triethylamine and 38. mM DOX. The results show that DOX is a viable chiral selector in CE for the enantioseparation of the type of chiral compounds investigated. © 2017 Elsevier B.V.
Kim M.J.,Gwangju Institute of Science and Technology |
Lee J.J.,Gwangju Institute of Science and Technology |
Lee S.H.,Kyungwoon University |
Sohn S.H.,Kyungpook National University
Solar Energy Materials and Solar Cells | Year: 2013
A CdTe/CdS heterostructure was fabricated on Fluorine Tin Oxide glass to produce thin-film photovoltaic devices. A CdCl2 layer was deposited onto the CdTe absorber layer and the subsequent annealing of the stack was performed in a He atmosphere. The influence of the CdCl2-activation step on the interfaces was investigated by monitoring the phase transition of CdCl2-heat-treated CdTe specimens during temperature ramp annealing via in situ high-temperature X-ray diffraction. X-ray Photoelectron Spectroscopy depth profiling data confirmed the interdiffusion between the CdTe and CdS layers through observation of the binding energy shifts and atomic ratio. The experimental results reveal that a compressive force, which is due to the formation of CdTeCdCl2 eutectic liquid phases between grains, which cause the capillary action of such liquid phases, seems to introduce a compressive strain in the plane of the film that facilitates the recrystallization process. © 2012 Elsevier B.V. All rights reserved.
Kim M.S.,Inje University |
Yim K.G.,Inje University |
Son J.-S.,Kyungwoon University |
Leem J.-Y.,Inje University
Bulletin of the Korean Chemical Society | Year: 2012
Aluminium (Al)-doped zinc oxide (AZO) thin films with different Al concentrations were prepared by the solgel spin-coating method. Optical parameters such as the optical band gap, absorption coefficient, refractive index, dispersion parameter, and optical conductivity were studied in order to investigate the effects of the Al concentration on the optical properties of AZO thin films. The dispersion energy, single-oscillator energy, average oscillator wavelength, average oscillator strength, and refractive index at infinite wavelength of the AZO thin films were found to be affected by Al incorporation. The optical conductivity of the AZO thin films also increases with increasing photon energy.
Kwon K.,Kyungwoon University |
Koong H.-S.,Konyang University |
Kang K.-H.,Konyang University
Technology and Health Care | Year: 2016
We investigated the burdock extract on the inhibitions of NO generation, COX-2 expression, and the generations of IL-6 and TNF-α, to find out its anti-inflammatory effect in this study. After the treatment of the burdock extract in the cells, we measured the amount of NO generated in the inflammatory cells developed by LPS and UVB, and confirmed the developments of inflammatory mediators by RT-PCR. Upon the results on the NO generation after the development of inflammation by LPS in Raw 264.7 cell, we found approximately 50% of inhibitory effect at 200 μg/ml concentrations of the burdock extract. It was confirmed that the expression levels of TNF-α, COX-2, and IL-6 were declined to the levels of control by LPS and UVB stimulated inflammation in HaCat cell. This means the anti-inflammatory effect of the burdock extract. © 2016 - IOS Press and the authors. All rights reserved.
Bae S.E.,Korea University |
Cho S.Y.,Korea University |
Won Y.D.,Black Garlic |
Lee S.H.,Kyungwoon University |
And 2 more authors.
LWT - Food Science and Technology | Year: 2012
A sensitive and reproducible analytical method to measure S-allyl cysteine (SAC) in black garlic was developed using the HPLC-FLD (fluorescence detection) with prior derivatization with AccQ-Fluor Reagent. The results were then compared with those from obtained using the HPLD-UVD (ultraviolet detection) that has been conventionally used for measuring SAC in raw garlic. The SAC content in raw garlic measured by the HPLC-FLD and the HPLD-UVD were 21.52 and 22.73μg/g, respectively. And these results were satisfactory with %CV (coefficient of variation) less than 2%. However, the application of the HPLC-UVD for the determination of SAC in black garlic was limited due to the high %CV that arose from the unstable baseline. However, the HPLC-FLD could be applied to the measurement of SAC in black garlic with satisfactory %CV. The HPLC-FLD method was validated by determining the linearity, limit of detection, limit of quantification, accuracy and precision. This method showed excellent linearity with a coefficient of determination (R 2) greater than 0.998. The limits of detection (LOD) and the limit of quantification (LOQ) were 6.28 and 19.02μg/mL, respectively. The accuracy ranged from 98.51 to 102.08%, and the precision of the method was found to be less than 2%. © 2011 Elsevier Ltd.
Kim J.,Korea University |
Cho H.-C.,Korea University |
Jung H.-S.,Korea University |
Yoon J.-D.,Kyungwoon University
Journal of Strength and Conditioning Research | Year: 2011
This study examined the relationship between 30-second anaerobic power and body composition by performance level in elite Judoists. During a 3-month period, 10 male Korean Judo national team athletes (NT), 26 male university varsity team athletes (VT), and 28 male junior varsity team athletes (JT) were assessed for 30-second anaerobic power and body composition at the Youngin University. Anaerobic power was measured using a 30-second Wingate test. Body composition was assessed via bioelectric impedance analysis in standardized conditions using BioSpace (Korean)-specific prediction formulas. All testing occurred at the beginning of the winter nonseason period but excluded a brief weight-loss period before the competition phase. Anaerobic power measures were significantly greater (p < 0.05) in NT and VT than in JT. Fat-free mass (FFM), muscle mass (MM), and total body water in JT were also greater than in VT and JT (p < 0.05). Muscle mass in VT was significantly lower than in NT (p < 0.05). Fat-free mass in NT was strongly correlated to mean and peak anaerobic power (r = 0.77, p = 0.009; r = 0.87, p < 0.001, respectively). Varsity team athletes also indicated a moderate association between FFM and peak and mean anaerobic power (r = 0.63, p < 0.001; r = 0.48, p = 0.013, respectively). However, relationship between FFM and anaerobic power was not statistically significantly correlated in JT (r = 0.14, p = 0.470; r = 0.23, p = 0.232, separately). In conclusion, our data indicated that anaerobic power is closely correlated with increase in FFM and MM and was different dependent among performance levels. Further research in the field is warranted to elucidate the Judo-specific relationship between FFM and performance. © 2011 National Strength and Conditioning Association.