Seoul, South Korea
Seoul, South Korea

Korea National Sport University is a South Korean public university located in the neighborhood of Bangi-dong, Songpa-gu, Seoul. It is the only national sport university of South Korea.Founded in December 1972, it opened its doors in March 1973. The university aims to educate and nurture excellent sportsmen and specialized sports coaches. All students majoring in physical education and sports guidance are required to live in the dormitory, and tuition and entrance fees are waived by the South Korean government. Wikipedia.

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Kim C.-H.,Eulji University | Park H.S.,Medical Center | Park M.,Eulji University | Kim H.,Korea National Sport University | Kim C.,Eulji University
American Journal of Clinical Nutrition | Year: 2011

Background: Obesity is a major health problem. It is associated with cardiovascular disease. The diagnosis of obesity is crucial to treating and preventing obesity-related medical problems. Objective: The objective was to determine optimal percentage body fat cutoffs in Korean adults for predicting obesity-related cardiovascular disease risk factors. Design: We evaluated the body composition and prevalence of obesity-related cardiovascular risk factors, such as hypertension, diabetes mellitus, and dyslipidemia, in 41,088 Korean adults aged 18-92 y. The optimal percentage body fat cutoffs for Korean adults were determined. Multivariable-adjusted odds ratios (ORs) of overweight and obesity were estimated by logistic regression. Results: The first cutoffs in men and women were 17% and 32% body fat, respectively; the second cutoffs were 21% and 37% body fat, respectively. The percentages of obese men and women were 41.8% and 15.9%, respectively. The adjusted OR of at least one risk factor for overweight or obesity in men was 2.22 (95% CI: 2.07, 2.38) or 4.05 (95% CI: 3.78, 4.33). The adjusted OR for women was 1.95 (95% CI: 1.79, 2.07; P < 0.0001) or 3.21 (95% CI: 2.87, 3.57). Conclusions: Only one-fourth of Korean men had a normal body composition, whereas most of the Korean women had a normal body composition. We conclude that susceptibility to cardiovascular disease and its risk factors is higher in Korean men than in Korean women. The cutoffs are useful for providing adequate guidelines for treating and preventing cardiovascular disease. This was the first study to determine cutoffs of percentage body fat for Korean adults. © 2011 American Society for Nutrition.

Leem Y.-H.,Korea National Sport University | Lee Y.-I.,Daegu University | Son H.-J.,Korea National Sport University | Lee S.-H.,Kangnam University
Biochemical and Biophysical Research Communications | Year: 2011

The objective of the present study was to investigate whether chronic endurance exercise attenuates the neuroinflammation in the brain of mice with NSE/htau23. In this study, the tau-transgenic (Tg) mouse, Tg-NSE/htau23, which over expresses human Tau23 in its brain, was subjected to chronic exercise for 3. months, from 16. months of age. The brains of Tg mice exhibited increased immunoreactivity and active morphological changes in GFAP (astrocyte marker) and MAC-1 (microglia marker) expression in an age-dependent manner. To identify the effects of chronic exercise on gliosis, the exercised Tg mice groups were treadmill run at a speed of 12. m/min (intermediate exercise group) or 19. m/min (high exercise group) for 1. h/day and 5. days/week during the 3. month period. The neuroinflammatory response characterized by activated astroglia and microglia was significantly repressed in the exercised Tg mice in an exercise intensity-dependent manner. In parallel, chronic exercise in Tg mice reduced the increased expression of TNF-α, IL-6, IL-1β, COX-2, and iNOS. Consistently with these changes, the levels of phospho-p38 and phospho-ERK were markedly downregulated in the brain of Tg mice after exercise. In addition, nuclear NF-κB activity was profoundly reduced after chronic exercise in an exercise intensity-dependent manner. These findings suggest that chronic endurance exercise may alleviate neuroinflammation in the Tau pathology of Alzheimer's disease. © 2011 Elsevier Inc.

Kim E.,Korea National Sport University | Yoon J.-S.,Korea University | Kang H.J.,Korea University
American Journal of Physical Medicine and Rehabilitation | Year: 2015

Recently, sonographic assessment has been considered an alternative method for evaluating cervical root lesions. The aim of this pilot study was to measure cross-sectional areas (CSAs) of cervical spinal nerve roots using high-resolution ultrasonography in patients with cervical radiculopathy, to compare the CSA of nerve roots between the affected and unaffected sides. Patients with a clinical diagnosis of unilateral cervical radiculopathy, who were referred to the Department of Physical Medicine and Rehabilitation in the University General Hospital by general practitioners, were prospectively recruited. The selected nerve roots were sonographically imaged at the most proximal location possible, where they exited over the transverse processor, just distal to that point. The CSA was measured three times using the trace tool available on the ultrasonography device. The CSA of each contralateral nerve root served as a control. Twenty-four patients (9 women; mean age, 53.7 yrs) were enrolled in this study. The CSAs were measured by ultrasonography in 5 pairs of C5 roots, 12 pairs of C6 roots, and 7 pairs of C7 roots. The mean CSAs of the affected and unaffected sides were 9.74 ± 1.95 and 9.47 ± 1.95 mm, respectively (P = 0.019). Spearman rank-order correlation test showed a positive relationship between the CSA of the affected nerve root and the duration of symptoms (ρ22 = 0.467, P = 0.021).This is, to the authors' knowledge, the first comparative study to obtain the CSA of spinal nerve roots in cervical radiculopathy. Increased CSA of the affected nerve root relative to the unaffected side, as demonstrated by ultrasonography, may be useful as an additive clue for the diagnosis of cervical radiculopathy.

Yoon J.-H.,Korea National Sport University | So W.-Y.,Seoul Womens University
Salud Publica de Mexico | Year: 2013

Objective. To examine whether leisure-time physical activity (PA) is associated with hypertension status in Korean adults (men, 586; women, 1 135) who visited a public health promotion center for a medical checkup in Seoul from 2010 to 2011. Materials and methods. Multivariate logistic regression analysis adjusted for age, body mass index, sleep duration, mental stress, education level, economic status, and drinking and smoking frequencies was performed. Results. Odds ratios and 95% confidence intervals for having hypertension and performing PA compared to having hypertension and not performing PA were not significant for both sexes regardless of the PA frequency and intensity, except for moderate PA 3 times per week in women. Conclusion. We conclude that PA has no or little association with hypertension status in Korean adults.

Yoon J.H.,Korea National Sport University | So W.-Y.,Seoul Womens University
Iranian Journal of Public Health | Year: 2013

Background: In Korea, hypertension has become more prevalent with the Westernization of Korean diets and lack of exercise. This study aimed at investigating the associations between physical fitness variables and hypertension status in Korean women. Methods: The subjects were 9,216 women aged >20 years who visited a public health promotion center for physical fitness tests. Cardiovascular respiratory fitness was evaluated using VO2max, resting heart rate (RHR), double product (DP), and vital capacity and coordination-related physical fitness was measured using grip strength, number of sit-ups completed, sit-and-reach score, vertical jump height, number of side steps performed, and 1-leg standing with eyes open. Results: The prevalence rates of prehypertension and hypertension were 30.3% and 12.9% in this study, respectively. After adjusting for age, body mass index, drinking frequency, smoking intensity, and exercise intensity, the odds ratios (95% confidence interval) were calculated, and no statistically significant association was found between hypertension and physical fitness as measured by grip strength (P = 0.056), number of sit-ups completed (P = 0.140), and vertical jump height (P = 0.121). However, significant associations were found between hypertension and VO2max (P < 0.001), RHR (P < 0.001), DP (P < 0.001), vital capacity (P < 0.001), sit-and-reach score (P = 0.012), the number of side steps performed (P = 0.001), and 1-leg standing with eyes open (P < 0.001). Conclusion: We found that all the cardiovascular respiratory fitness variables and half of the motor- and coordination-related physical fitness variables were closely related with hypertension status.

Jamart C.,Catholic University of Louvain | Benoit N.,Catholic University of Louvain | Raymackers J.-M.,Catholic University of Louvain | Kim H.J.,Korea National Sport University | And 2 more authors.
European Journal of Applied Physiology | Year: 2012

The purpose of this study was to evaluate whether ultra endurance exercise changes the mRNA levels of the autophagy-related and autophagy-regulatory genes. Eight men (44 ± 1 years, range: 38-50 years) took part in a 200-km running race. The average running time was 28 h 03 min ± 2 h 01 min (range: 22 h 15 min-35 h 04 min). A muscle sample was taken from the vastus lateralis 2 weeks prior to the race and 3 h after arrival. Gene expression was assessed by RT-qPCR. Transcript levels of autophagy-related genes were increased by 49% for ATG4b (P = 0.025), 57% for ATG12 (P = 0.013), 286% for Gabarapl1 (P = 0.008) and 103% for LC3b (P = 0.011). The lysosomal enzyme cathepsin L mRNA was upregulated by 123% (P = 0.003). Similarly, transcript levels of the autophagy-regulatory genes BNIP3 and BNIP3l were both increased by 113% (P = 0.031 and P = 0.007, respectively). Since upregulation of these genes has been related with an increased autophagic flux in various models, our results strongly suggest that autophagy is activated in response to ultra endurance exercise. © Springer-Verlag 2011.

Kim H.J.,Korea National Sport University
Amino acids | Year: 2011

Doubtful allegations of adverse effects of creatine supplementation have been released through the press media and through scientific publications. In the present review we have tried to separate the wheat from the chaff by looking for the experimental evidence of any such claims. Anecdotal reports from athletes have appeared on muscle cramp and gastrointestinal complaints during creatine supplementation, but the incidence of these is limited and not necessarily linked to creatine itself. Despite several unproved allegations, liver (enzymes, urea) and kidneys (glomerular filtration urea and albumin excretion rates) show no change in functionality in healthy subjects supplemented with creatine, even during several months, in both young and older populations. The potential effects (production of heterocyclic amines) of mutagenicity and carcinogenicity induced by creatine supplementation have been claimed by a French Sanitary Agency (AFSSA), which might put consumers at risk. Even if there is a slight increase (within the normal range) of urinary methylamine and formaldehyde excretion after a heavy load of creatine (20 g/day) this is without effect on kidney function. The search for the excretion of heterocyclic amines remains a future task to definitively exclude the unproved allegation made by some national agencies. We advise that high-dose (>3-5 g/day) creatine supplementation should not be used by individuals with pre-existing renal disease or those with a potential risk for renal dysfunction (diabetes, hypertension, reduced glomerular filtration rate). A pre-supplementation investigation of kidney function might be considered for reasons of safety, but in normal healthy subjects appears unnecessary.

Park S.-K.,Korea National Sport University | Park S.-K.,University of Calgary | Stefanyshyn D.J.,University of Calgary
Clinical Biomechanics | Year: 2011

Background: A greater Q-angle has been suggested as a risk factor for Patellofemoral Pain Syndrome. Greater frontal plane knee moment and impulse have been found to play a functional role in the onset of Patellofemoral Pain Syndrome in a running population. Therefore, the purpose of this investigation was to determine the relationship between Q-angle and the magnitude of knee abduction moment and impulse during running. Methods: Q-angle was statically measured, using a goniometer from three markers on the anterior superior iliac spine, the midpoint of the patella and the tibial tuberosity. Thirty-one recreational runners (21 males and 10 females) performed 8-10 trials running at 4 m/s (SD 0.2) on a 30 m-runway. Absolute and normalized knee moment and impulse were calculated and correlated with Q-angle. Findings: Negative correlations between Q-angle and the magnitude of peak knee abduction moment (R2 = 0.2444, R = - 0.4944, P = 0.005) and impulse (R2 = 0.2563, R = - 0.5063, P = 0.004) were found. Additionally, negative correlations between Q-angle and the magnitude of weight normalized knee abduction moment (R2 = 0.1842, R = - 0.4292, P = 0.016) and impulse (R2 = 0.2304, R = - 0.4801, P = 0.006) were found. Interpretation: The findings indicate that greater Q-angle, which is actually associated with decreased frontal plane knee abduction moment and impulse during running, may not be a risk factor of Patellofemoral Pain Syndrome. © 2010 Elsevier Ltd. All rights reserved.

Kim G.S.,Korea National Sport University
Obesity research & clinical practice | Year: 2014

BACKGROUND: Recently, osteocalcin (OC), an osteoblast-derived hormone, has been suggested as a new link between obesity and insulin resistance in humans. However, few studies regarding the relationship between OC and obesity in Asian children have been published. We investigated the association of OC with adiposity, insulin resistance and metabolic syndrome (MetS) in Korean children.METHODS: Two hundred and nine (100 boys, 109 girls) children (age: 9.78 ± 1.05 years, body mass index (BMI): 22.27 ± 5.34 kg/m(2)) participated in this cross-sectional study. Anthropometric parameters, insulin resistance, lipid profiles, total OC, and an inflammatory marker, C-reactive protein (CRP), were measured. MetS phenotype was also determined.RESULTS: Serum total OC levels were significantly lower in overweight or obese children (76.96 ± 27.08 ng/ml vs. 66.91 ± 21.39 ng/ml, p = 0.020) and it was negatively associated with body fat after controlling for age, gender and BMI. Serum total OC concentrations were significantly lower in participants with central obesity or at least two components of MetS driven by waist circumference than they were in those with none. Stepwise linear regression results also showed that serum total OC was partially explained by age, gender, waist-to-hip ratio, and fasting glucose.CONCLUSIONS: This study supported a negative association between serum total OC and adiposity in children. OC may be associated with childhood central obesity; however, further research using more accurate measurements is needed to identify the association between these variables. © 2014 Asian Oceanian Association for the Study of Obesity . Published by Elsevier Ltd. All rights reserved.

Kim E.,Korea National Sport University | Lee J.H.,Kyung Hee University
PM and R | Year: 2014

Objective: To determine the efficacy of autologous platelet-rich plasma (PRP) compared with dextrose prolotherapy (DP) in patients with chronic recalcitrant plantar fasciitis (PF). Design: A single-blinded, randomized, controlled study. Setting: Department of Physical Medicine and Rehabilitation of a university hospital. Participants: Twenty-one patients with a clinical diagnosis of chronic PF confirmed by diagnostic ultrasound (plantar fascia thickness >4mm) were randomly assigned to the PRP group (n= 10) or the DP group (n= 11). Interventions: Each patient received 2 injections into the plantar fascia through a peppering technique under ultrasound guidance at an interval of 2 weeks, either with 2 mL of autologous PRP or 2 mL of 15% dextrose/lidocaine solution. Main Outcome Measurements: The outcome measures included the pain, disability, and activity limitation subscales, measured by means of the Foot Functional Index. Data were collected before the first injection, at 2 weeks (before the second injection), and at the 2- and 6-month follow-ups. Results: All patients completed the follow-ups, with the exception of 1 patient in the PRP group. The mean Foot Functional Index total and subcategory score improvements were greater in the PRP group compared with the DP group (improvement with PRP vs DP, total: 30.4% vs 15.1%, pain: 29.7% vs 17.1%, disability: 26.6% vs 14.5%, activity limitation: 28.0% vs 12.4%). However, no statistically significant difference was noted at any follow-up. In the pain and disability subcategories, both groups showed significant improvements at the last re-evaluation. The PRP group also showed significant improvements in the disability and activity limitation subscales at the second re-evaluation. Conclusions: Each treatment seems to be effective for chronic recalcitrant PF, expanding the treatment options for patients in whom conservative care has failed. PRP treatment also may lead to a better initial improvement in function compared with DP treatment. © 2014 American Academy of Physical Medicine and Rehabilitation.

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