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동적, 정적, PNF 스트레칭이 요부 유연성에 미치는 효과
최원제,조남정,강희권,강수경,김민정,김병오,허수용,유병국,이삼철,손경현,Choi, Won-Jye,Cho, Nam-Jung,Kang, Hee-Kwon,Kang, Soo-Kyung,Kim, Min-Jung,Kim, Bung-Oh,Heo, Soo-Yong,Yoo, Byung-Kook,Lee, Sam-Cheol,Son, Kyung-Hyun 대한고유수용성신경근촉진법학회 2009 PNF and Movement Vol.7 No.2
Purpose : The purpose of this study is to find out which method is efficient to enhance the flexibility of lower back between PNF(Proprioceptive Neuromuscular Facilitation), static and dynamic stretching. Methods : Subjects were 30 young people between the ages 17 and 19. They were randomly divided into three groups; static group(n=10) performed a static stretching, dynamic group(n=10) performed a dynamic stretching, and PNF group(n=10) performed a PNF stretching. Intervention was provided 5 days per week for 4 weeks. For each case, Trunk flexion forward, trunk flexion backward, trunk left lateral bending, trunk right lateral bending, trunk flexion forward a measuring instrument and tapeline were performed to measured the flexibility of lower back at different times(before starting the exercise, after 4 weeks). Results : The results of the study reveal that the lower back flexibility was a statistically significant difference in all groups(p<.05). There was statistically significant difference between PNF group and static group, PNF group and dynamic group. Conclusion : The finding indicated that PNF may be preferred technique for improving flexibility, and that flexibility training results in an increased consistency of flexibility scores.
Planning 기반 DRT 운영의 수월성에 관한 연구: DRT 3.0 청주콜 버스의 오송읍 사례를 중심으로
김현명,육영진,강희권,강진동,김태균 한국모빌리티학회 2023 모빌리티연구 Vol.3 No.2
Public transportation services had constantly developed and expanded in accordance with the population growth in South Korea. Nonetheless, various issues such as an increase in government subsidies and the deterioration in the quality of public transportation services have recently been occurring. These issues stem from drastic rural depopulation, urbanization, and low fertility rates. Even though local governments agonize over confronting issues by improving their management systems, there are fundamental constraints to solving issues. In response to these situations, recent advances in platform technology in the mobility sector have led to a great stride in DRT (demand-responsive transport) platform services. The app-based DRT service looks forward to improving the quality of public transport services and bringing out significant solutions to existing issues. There have, however, been trials and errors in the case studies that DRT services are implemented without sufficient pre-analysis and simulations. These cases have mostly encountered obstacles when setting up oversaturated service areas and fleet deployment, adequate by-pass ratio, and securing the punctuality of services. The study synthetically classifies DRT services into three operational levels according to the sense of the booking methods, operation method, and pre-planning levels: DRT 1.0, DRT 2.0, and DRT 3.0. Besides, it conducted an in-depth analysis of the pros and cons of each operational level. The study ultimately authenticates the operational excellence of DRT 3.0 by comparing the key performance indicators and operational efficiency in the case study of Cheongju-Call-Bus, based on the advanced planning method of DRT 3.0.