• Journal of Korean Society for Geospatial Information Science
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• v.17 no.4
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• pp.87-93
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• 2009

The increased person interests in health in accordance with improved living standards result in the booming population who enjoy mountain climbing. Although there are more climbers than ever, most existing mountain paths are those which have been made naturally by people utilizing them to get to the peak and therefore cannot meet the various needs of emerging mountain climbers. Thus, this study that establish a data using numerical map and TotalStation aimed to provide them with beneficial information on mountain paths, analyzing each path using GIS. The subjects of this study are limited to Kum-Am which is in Kyungnam province, Korea. According to out research, proper slopes for the majority of mountain climbers, mostly in their from 30s to 50s, are turned out to be HG1 and JG1-JG2-JG3.

• Fire Science and Engineering
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• v.34 no.2
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• pp.97-102
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• 2020

The purpose of this study was to investigate the effectiveness of a Tabata exercise program as an alternative for firefighters whose working environment makes it difficult to manage physical fitness. The Tabata exercise program, in which 16 people participated, led to increased muscle mass and reduced weight and body fat, which not only improved the health of the firefighters but also improved their cardiopulmonary endurance, muscle endurance, and muscle strength, which are essential elements during firefighting emergency relief activities. On the basis of these results, it is believed that developing and providing guidelines for scientific and systematic exercise programs to firefighters will lead to better work capability during fire and disaster situations.

• Journal of Industrial Convergence
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• v.19 no.1
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• pp.137-146
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• 2021

In This study investigated the effects of various intensity cycling exercise on body composition, blood lipids and fat metabolism in obese middle-aged women. 17 people obesity middle - aged women aged 35 to 55 years were divided into 3 groups: 5 people in the low intensity group, 6 people in the medium intensity group, and 6 people in the high intensity group. The object of this study was to compare the effect of cycle exercise performed between 20 ~ 50 minutes per a day,1 3 day times per week on the body composition, lipid profile and lipid metabolism of obesity middle - aged women. There was not substantial difference in body construction between groups. in blood lipid changes, there was a substantial difference in glucose between groups, There was not substantial difference between groups in the change of fat metabolism. In addition, there was not substantial difference in the interaction effect between time and time × group. It is expected that the results of this study will be used as basic data for related field.

• Journal of Life Science
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• v.22 no.6
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• pp.744-750
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• 2012

The aim of the present study is to investigate the effects of 12 weeks-moderate aerobic exercise training on body composition, adiponectin, retinol-binding protein-4 (RBP-4), and vascular inflammation factors in obese children. The subjects were classified into two groups, one of which was an exercise group (n=15) practicing moderate aerobic exercise training for 12 weeks, and the other group, the control group (n=13), was not in that program. The exercise group participants performed on the treadmill running at heart rate reserve (HRR) 50% of exercise intensity for 300 kcal of the consumed time. The results of all the studies and inspections are as follows: Weight, body mass index, body fat, and systolic and diastolic blood pressure were significantly lower, while $VO_2$ max was higher in the exercise group than in the control group (p<0.05, respectively). Fasting glucose, insulin, and HOMA-IR levels in the exercise group were significantly decreased (p<0.05), whereas adiponectin levels in the exercise group were significantly increased after 12 weeks' exercise training (p<0.05). In addition, our results showed that RBP4, C-reactive protein (CRP), and interleukin-6 (IL-6) concentrations in the exercise group were significantly lower than those of the control group (p<0.05). This investigation has shown that a 12 weeks-regular aerobic exercise program offers useful effects such as an amelioration of inflammation and body indices in obese children.

• Journal of the Korean Applied Science and Technology
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• v.38 no.6
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• pp.1512-1523
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• 2021

The purpose of this study was to investigate the effect of Saengmaeg-san intake on blood lipids and arteriosclerosis index in male tennis players. Seventeen male tennis players enrolled in university were assigned to a Saengmaeg-san intake group (n=9) and a placebo control group (n=8) according to whether they took Saengmaeg-san during 4-week high-intensity tennis training. Tennis training was conducted 5 times a week for 4 weeks, and the exercise intensity was performed at 70-90% of the spare heart rate. The intake of Saengmaeg-san was 110ml at a time before breakfast, before, during, during, and after exercise, and after dinner, a total of 7 times, 770ml per day. For all data, mean and standard deviation were used. Two-way repeated measures ANOVA was used to examine the effect of time and treatment, and Pearson's Correlation was used to examine the relevance of differences in blood lipid responses after treatment. As a result of this study, the Saengmaeg-san intake group significantly improved blood lipids (triglyceride, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol) and arteriosclerosis index, and there was a significant correlation appeared between ∆TG, ∆LDL-C, and ∆TC. As a result, the intake of Saengmaeg-san during high-intensity training of male college student tennis players can have a positive effect on blood lipids and arteriosclerosis index, suggesting that it can be an effective sports drink as an exercise supplement.

• Science of Emotion and Sensibility
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• v.19 no.1
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• pp.3-10
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• 2016

This research was to investigate the effect of fatigue reduction and heart rate recovery (HRR) according to whole body vibration (WBV). 20 healthy participants were recruited and divided into vibration group (VG) and none vibration group (NVG). VG was group with provided vibration and NVG was group without vibration. They exercised slope gait with 8.5 degree and 4km/h during 30min. They rested on the chair type vibrator during 30min. The vibration consists of 10hz as frequency and 5mm as amplitude. We measured the lactate in the blood and HRR before, immediately after exercise and after rest session. The results showed that lactate level in VG the more decreased at 95.2%. The result of HRR was similar including recovery at 50.67% in VG. The WBV with stimulated vessel in muscle assisted the recovery function by reducing the excess post-exercise oxygen consumption (EPOC) quickly and improving blood circulation. The rest with WBV could provide efficient cool-down exercise for elderly and women without other physical activities after exercise.

• Journal of Life Science
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• v.21 no.6
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• pp.838-844
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• 2011

The purpose of this study was to investigate gender-specific changes of plasma MDA, SOD, and lymphocyte DNA damage during high intensity exercise. In this study, 17 healthy male and 18 healthy female college students ran on a treadmill at 85%$VO_{2max}$ until the point of all-out. Blood-collecting was carried out five times (Rest, Ex-Exha, R0.5h, R4h and R24h), and with the collected blood, plasma malondialdehyde (MDA), superoxide dismutase (SOD), and lymphocyte DNA damage were analyzed. Plasma MDA and SOD concentration increased significantly at the Ex-Exha (p<0.05), and there were no significant differences in gender. For the degree of lymphocyte DNA damage, all %DNA in the tail, tail length and tail moment increased significantly at the Ex-Exha (p<0.05), and %DNA in the tail and tail length were significantly higher in the male group than in the female group (p<0.05). These results suggest that acute high intensity exercise not only causes oxidative stress but also brings about lymphocyte DNA damage. In addition, it was found that males showed higher DNA damage than females in terms of oxidative stress subject to high intensity exercise. Nevertheless, further subsequent studies are required in order to better understand the mechanism behind DNA damage varying with gender, in a way that takes into consideration physical fitness, hormonal level, exercise intensity and duration - additional factors which might affect DNA damage.

• Journal of the Korean Applied Science and Technology
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• v.36 no.2
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• pp.371-382
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• 2019

The aim of this study was to evaluate the physiological responses following acute and chronic Nurida-ball exercise to measure the relative exercise intensity and health-related fitness in middle-aged men. In study 1, eight middle-aged men carried out acute Nurida-ball exercise for 30 min. The physiological responses were normalized and compared with a graded treadmill exercise test (GXT) to evaluate the relative exercise intensity. In study 2, twelve middle-aged men were divided into two groups: Nurida-ball exercise group (NB, n=6) and control group (CON, n=6). NB group performed the Nurida-ball exercise for 8 weeks (30min/day, 3 days/week). And then, we measured the body composition, cardiovascular factors, blood lipid factors, and muscle damage markers to confirm the exercise efficiency. In study 1, the related exercise intensity of acute Nurida-ball is the range of GXT-HRpeak (55~85%) and $GXT-VO_2peak$(23~61%). The change in body fat-related factors was significantly lower in the NB compared to the CON group. Moreover, TC and LDL were decreased whereas BMC was increased in the NB group after Nurida-ball exercise. The change in VEpeak and performance time of GXT were significantly greater in the NB compared to the CON group. The performance time of GXT was increased in the NB group after Nurida-ball exercise. Our results indicated that Nurida-ball exercise would be effective equipment for the improvement of health-related fitness. Especially, Nurida-ball exercise can affect body composition and cardiovascular function, which might alleviate metabolic syndrome-related diseases in middle-aged men.

• Journal of Korea Entertainment Industry Association
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• v.14 no.4
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• pp.365-370
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• 2020

The purpose of this study was to accurately measure the load generated on the leg according to the position of the sling strap supporting the leg during the sling bridge exercise for improvement of life care. Ten Healthy university students participated in two trials: knee bridge exercise and ankle bridge exercise in supine position. The loads transmitted to the knees and ankles were measured when a bridge exercise was performed with a sling strap on both knees and ankles. As a result of the study, it was confirmed that the load of sling bridge exercise with both knees supported was statistically greater than the load of sling bridge exercise with both ankles supported(p<.01). On the other hand, there was no statistically significant difference in the load between both knees and both ankles (p>.05). Therefore this study is meaningful in that it objectively measured the load on the leg during sling bridge exercise, and is thought to be helpful in setting exercise intensity during sling exercise.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.129-129
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• 2022

국내에서 발생하는 토양침식(soil erosion)은 주로 강우에 의해 발생하며, 이로 인해 농경지 유실, 탁수 발생, 하천 통수능 저하 등 여러 수문학적·환경적 문제가 발생한다. 따라서 유역 내 토양침식 위험지역을 선별하고, 해당 지역의 토양유실 및 유사의 발생량을 산정하는 것은 토양보전 대책 수립 시에 중요한 지표로 활용된다. 침식-유사유출의 물리적 과정은 크게 '강우에 의한 토양 분리(detachment by raindrop)'와 '지표류에 의한 토양 분리(detachment by overlandflow)'로 나눌 수 있으며, 그중 강우에 의한 토양 분리는 수침식(water erosion)의 첫 번째 과정 중 하나로 강우 시 낙하하는 강우 입자들이 갖는 운동에너지가 지표면을 타격할 때 토양체로부터 토양입자가 분리되는 과정이다. 따라서 강우에 의한 토양분리량 산정을 위해서는 강우 운동에너지(rainfall kinetic energy, KE)의 정확한 계산이 요구된다. 그러나 기후 및 지리적 특성 등 여러 조건에 따라 강우 운동에너지는 지역마다 다르게 나타나며, 이로 인해 강우 운동에너지 추정이 매우 어려운 실정이다. 따라서 강우 운동에너지 추정은 주로 강우강도(rainfall intensity, I)와의 관계를 이용한 함수식을 활용한다. 본 연구에서는 대상 지역인 상주지역에 광학우적계(disdrometer)를 설치하여 2020년 6월부터 2021년 12월까지 관측된 37개의 강우 사상에 대하여 KE-I의 관계를 분석하고, 이를 통해 강우 운동에너지식을 도출하였다. 또한, 기존에 국외 및 국내에서 제시된 선형(linear), 멱함수(power-law function), 지수함수(exponential function) 형태의 강우 운동에너지 공식과 본 연구에서 산정된 KE를 비교하였다. 그 결과 비체적 강우 운동에너지에서 Sanchez-Moreno et al. (2012)가 제안한 멱함수 형태의 공식이, 비시간 강우 운동에너지에서 Kinnel (1981)이 제안한 지수함수 형태의 공식이 각각 강우 운동에너지 추정에 통계적으로 유의한 것으로 나타났다.