3,000 m 저압·저산소 환경에서 6주간의 고강도 유산소성 지속주 및 무산소성 인터벌 트레이닝이 수영선수의 유산소성 및 무산소성 운동능력에 미치는 영향

임기원 ( Kiwon Lim ),박훈영 ( Hun-young Park ) 한국스포츠정책과학원(구 한국스포츠개발원) 2017 체육과학연구 Vol.28 No.1

[목적] 본 연구는 실업수영선수를 대상으로 3,000 m 상당고도의 저압·저산소 환경에서 6주간의 간헐적인 트레이닝이 유산소성 및 무산소성 운동능력에 미치는 효율성을 검토하기 위한 목적으로 수행되었다. [방법] 연구를 수행하기 위해 실업수영선수 20명을 평지환경에서 트레이닝을 수행하는 INT(intermittent normoxic training) 그룹 10명과 IHT(intermittent hypoxic training) 그룹 10명으로 나눈 후 각자의 환경조건에서 6주간, 주 3회, 1시간 동안 80%HRmax(maximal heart rate)에 해당되는 유산소성 지속주 트레이닝 운동(30분)과 90%HRmax에 해당되는 강도로 무산소성 인터벌 자전거 운동(총 10회; 2분 운동과 1분 휴식으로 구성) 30분을 수행하였다. [결과] 그 결과, 유산소성 운동능력의 경우, PWC at 75%HRmax, estimated VO₂max, exercise time에 있어서 IHT 그룹에서만 트레이닝에 의한 유의한 증가가 나타났으며, estimated VO₂ at 75%HRmax는 INT와 IHT 그룹 모두에서 트레이닝에 의한 유의한 증가가 나타났으나, 증가율은 IHT 그룹에서 보다 큰 경향을 보였다. 무산소성 운동능력에서는 경우에는 PK-AnP(peak anaerobic power)와 FI(fatigue index)에서 IHT 그룹에서만 트레이닝에 의한 유의한 증가가 나타났다. 윈게이트 테스트 직후 혈중젖산농도의 경우, IHT 그룹에서 트레이닝에 의한 유의한 증가가 나타났으며, 트레이닝 후에 INT 그룹과 비교했을 때, IHT 그룹에서 더 낮은 값을 나타냈다. [결론] 본 연구에서는 이러한 유산소성 및 무산소성 운동능력 향상의 해석을 뒷받침할 수 있는 다양한 종속변인의 측정이 이루어지지 않았지만, 이러한 결과는 단거리부터 장거리까지 다양한 경기에 출전하여 유·무산소성 운동능력이 모두 중요한 수영선수에게 있어 간헐적으로 훈련을 실시하는 IHT 방법이 경기력 향상에 있어서 효율적일 수 있다는 것을 보여준다고 사료된다. [Purpose] The purpose of this study was to determine the effectiveness of six-weeks intermittent hypoxic training at 3,000 m hypobaric hypoxic condition on aerobic and anaerobic exercise capacity in competitive swimmers. [Methods] South Korean swimmers (n=20) were randomly assigned into training at sea-level (n=10, intermittent normoxic training group; INT) and training at 526 torr corresponding to 3,000 m hypobaric hypoxic condition (n=10, intermittent hypoxic training group; IHT). The participants completed an aerobic continuous treadmill training (30 min) within 80%HRmax and anaerobic interval bicycle training (10 times; 2 min of exercise and 1 min of rest) for 30min within 90%HRmax in each environment. We compared their aerobic and anaerobic exercise capacity before and after six-weeks of training. Exercise frequency was 1 hour, 3 days per a week, and during 6 week. [Results] In aerobic exercise capacity, PWC at 75%HRmax, estimated VO₂max, and exercise time were increased by training in only the IHT group. Estimated VO₂ at 75%HRmax was increased by training in both groups, but presented a larger increase tendency in the IHT group compared with the INT group. In anaerobic exercise capacity, peak anaerobic power and fatigue index were increased by training in only the IHT group. Blood lactate level after wingate test were decreased by training in both groups, but the IHT group have a lower blood lactate level in after training compared with the INT group. [Conclusion] In our study, we did not measure to various dependent variables for support to enhancement of aerobic and anaerobic exercise performance. However, these results showed that the IHT method may be effective in improvement of exercise performance in competitive swimmers who participates in a variety of events from short to long distance.

AHP를 이용한 전문가 집단별 창고 입지선정 요소의 상대적 중요도 차이에 관한 연구

최도훤 ( Dohwon Choi ),임기원 ( Kiwon Lim ),박민영 ( Minyoung Park ) 한국유통물류정책학회 2022 유통물류연구 Vol.9 No.2

최근 전자상거래 및 생활물류 시장의 성장으로 물류보관 시설에 대한 수요가 증가하고 있다. 이로 인해 물류부동산 수요가 증가했고, 국내 상업용 부동산 시장에서 물류 부동산이 차지하는 비중이 2020년 기준 20.8%에 달하는 것으로 나타났다. 물류경영 관점에서 비용 절감 및 물류서비스 품질 향상을 위하여 물류시설에 대한 입지선정은 매우 중요한 의사결정 대상이며, 이용수요, 부지 가격 및 여건, 인허가 조건 등 다양한 요소가 고려되고 있다. 그러나, 물류시설의 공급확대는 해당 지역에 화물차량 통행 증가에 따른 소음 및 대기 오염과 같은 환경문제와 교통사고 증가 등과 같은 사회적 문제를 야기한다. 따라서 물류시설 입지선정에 있어서 물류 비용과 서비스 관점의 최적화 뿐만 아니라, 물류시설의 사회적 요인도 동시에 고려해야 한다. 이러한 배경 하에 의사결정권자들의 물류시설 입지선정 요소에 대한 인식은 매우 중요하다. 물류시설 입지의사 결정에 참여하는 전문가들의 소속 또는 특성에 따라 물류시설의 입지선정 요인에 대한 인식 차이가 존재하여 평가결과가 달라질 수 있다. 따라서 본 연구에서는 물류창고 입지선정 의사결정권자를 대상으로 설문조사를 실시하여 물류시설 입지선정에 필요한 요소들의 상대적 중요도를 측정하고, 의사결정권자를 특성별로 구분하여 평가요소들 간의 인식차이가 존재하는지 살펴보았다. 물류시설 입지선정 평가요소의 상대적 중요도는 널리 사용되고 있는 계층분석법(AHP)를 적용하였다. 종합적 분석 결과, 이용수요, 부지여건, 기타 순으로 상대적 중요도가 나타났다. 의사결정권자들의 그룹을 공무원, 연구자, 유통기업, 물류기업과 같이 4가지로 구분하여 각 집단별 상대적 중요도를 측정하였다. 그 결과 공무원 집단과 물류기업은 부지여건을 가장 중요한 요소로, 연구자 집단과 유통기업은 이용수요를 가장 중요한 요인으로 인식하고 있는 것으로 조사되어 의사결정 그룹별 평가요소별 중요도 인식에서 차이가 존재하는 것을 확인할 수 있었다. 본 연구결과는 물류시설 입지선정 과정에서 의사결정에 참여하는 주체에 따라 최적 입지선정 결과가 달라질 수 있음을 보여주고 있고, 전통적으로 물류비용이나 물류서비스 관점의 평가요인 외에 부지여건과 인허가 조건, 그리고 환경과 교통안전 등 사회적 편익 관점에서의 평가요인에 대한 상대적 중요도가 높아지고 있음을 보여주고 있다. Recently, the demand for logistics and storage facilities is increasing due to the growth of e-commerce and daily logistics markets. As a result, demand for logistics real estate increased, and the proportion of logistics real estate in the domestic commercial real estate market reached 20.8% as of 2020. From the point of view of logistics management, location selection for logistics facilities is a very important decision-making target in order to reduce costs and improve logistics service quality, and various factors such as demand for use, site price and conditions, and licensing conditions are being considered. However, the expansion of the supply of logistics facilities causes environmental problems such as noise and air pollution caused by the increase in freight vehicle traffic in the area, and social problems such as an increase in traffic accidents. Therefore, in selecting a location for a logistics facility, it is necessary to consider not only the optimization of logistics costs and services, but also the social factors of the logistics facility. Against this background, it is very important for decision makers to recognize the factors of location selection for logistics facilities. Depending on the affiliation or characteristics of the experts participating in the decision-making on the location of the logistics facility, there is a difference in the perceptions of the factors for selecting the location of the logistics facility, so the evaluation results may vary. Therefore, in this study, we conducted a survey of decision makers for location selection of logistics warehouses to measure the relative importance of factors necessary for location selection for logistics facilities, and classify decision makers by characteristics to see if there is a difference in perception between evaluation factors. The widely used Analytic Hierarchy Process(AHP) method was applied to the relative importance of the evaluation factors for location selection of logistics facilities. As a result of the comprehensive analysis, the relative importance was found in the order of demand for use, site conditions, and others. The group of decision makers was divided into four groups: civil servants, researchers, distribution companies, and logistics companies, and the relative importance of each group was measured. As a result, it was found that civil servants and logistics companies recognized site conditions as the most important factor, and researchers and distribution companies recognized usage demand as the most important factor. could check. The results of this study show that the optimal location selection results can vary depending on the actors involved in decision-making in the location selection process for logistics facilities. It shows that the relative importance of evaluation factors in terms of social benefits such as environment and traffic safety is increasing.

캡사이신 첨가 고지방식이가 운동시 조직 글리코겐 농도에 미치는 영향

서혜정(Suh Heajung),임기원(Lim Kiwon) 韓國營養學會 2001 Journal of Nutrition and Health Vol.34 No.7

12주간 Pilates 운동이 여대생의 S-IgA 농도에 미치는 영향

황윤영(Yoonyoung Hwang),박종훈(Jonghoon Park),임기원(Kiwon Lim) 한국발육발달학회 2015 한국발육발달학회지 Vol.23 No.1

The purpose of this study was to investigate the effects of Pilates exercise for 12 weeks on salivary immunoglobulin A(S-IgA) in undergraduate female student. They were assigned to the Control group(CG) of eight people and the Pilates exercise group(PG) of ten people. The subjects 50 minutes Pilates mat exercises of three times a week for 12 weeks Saliva samples were obtained from both groups before and after the experimental period for absolute S-IgA concentration measurement. In addition, acute high-intensity exercises were performed after the 12 weeks Pilates exercise program, and saliva samples were obtained before the acute exercise and after 30 and 60 min. The results are summarized as follows. After 12 weeks, absolute S-IgA concentration was high in the PG than the CG, but there was no significant difference between groups. After the acute high-intensity exercises performed following 12 weeks Pilates exercise program, the absolute SIgA concentration was significantly higher at 30min time points, although the rates did not differ between the Pilates exercise program. This study suggests that regular participation in a moderate-intensity Pilates exercise program can increase absolute S-IgA concentration in young women.

녹색 공급망관리를 고려한 공급업체의 공급성과가 제조업체의 구매의사결정에 미치는 영향에 관한 연구

민정웅 ( Min Jungung ),김은진 ( Kim Eunjin ),임기원 ( Lim Kiwon ),박민영 ( Park Minyoung ) 한국로지스틱스학회 2020 로지스틱스연구 Vol.28 No.2

Since the 1990s, the European Union has tightened various environmental regulations on companies, environmental factors have become an important issues for decision makers. As a result, corporate purchasing managers began to make efforts to reflect supplier selection and evaluation in consideration of environmental issues. Accordingly, various studies have been conducted on the selection of green suppliers, but studies have been conducted to measure the importance of the selection criteria of industrial companies of purchasers. Therefore, the main purpose of this study is to examine the difference between the importance of the selection criteria and the supply performance, and the difference between the manufacturer’s business performance and the supplier’s supply performance through a review of the manufacturer’s selection criteria for the market environment. Furthermore, it aims to identify the relationship between supplier performance on selection criteria and business performance with manufacturers. To achieve the purpose of this study, empirical analysis was carried out for 70 purchasing managers of manufacturers in the electrical, electronic and heavy chemical industries. Based on the previous research, we were able to derive a total of six supplier selection factors such as eco-friendliness, quality, relationship, flexibility, price and delivery, and finance. Corresponding sample t test and independent sample t test were performed. Finally, multiple regression analysis was used to analyze the correlation between supplier performance and manufacturer’s performance on selection criteria. The results showed that eco-friendliness, flexibility, price and delivery factors had a statistically significant relationship with the manufacturer’s performance.

5주간의 고지방식이 섭취시 흰쥐의 에너지 대사 기질 이용과 식이지방에너지 평가에 관한 연구

황혜정(Hyejung Hwang),김지수(Jisu Kim),서혜정(Heajung Suh),임기원(Kiwon Lim) 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.8

This study investigated the effect of a long-term high-fat diet on energy metabolic substrate utilization in resting rats in order to revalue source fat energy efficiency during a high-fat diet and its effect on energy expenditure and body fat accumulation. Sprague-Dawley male rats at 4 weeks of age were bought from Orient Bio Con. The rats were divided into a control (CON) group and a high-fat diet (HF) group. Rats ate a high-fat diet (w/w 40%, kcal/kcal 64.9%) ad libitum for 5 weeks. Food intake and body weight were measured every day at 09:00 throughout the experimental period. Energy expenditure was measured using an animal energy metabolism chamber after 4 weeks. The final body weight did not change between the CON and HF groups, but caloric intake was significantly higher in the HF group than in the CON group (p<0.05). There was no difference between the groups in oxygen uptake, however carbon dioxide production was significantly higher in the HF group. Also, the respiratory exchange ratio was higher in the HF group. Carbohydrate oxidation was lower in the HF group than in the CON group, but fat oxidation in the HF group was greater. These results mean that energy substrate oxidation at rest is affected by diet composition, especially dietary fat content. Abdominal fat fad weights were significantly higher by 33% in the HF group than in the CON group even though the calorie intake in the HF group was higher by 6%. These results suggested that the dietary fat calorie value might have a higher Atwater value of 9 kcal/g, which mean that dietary fat calorie values could be reconsidered in body weight control scenarios such as which the obese or weight class athletes.