지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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In this study, a real-time evaluation system for quantitative dynamic fitting during pedaling was developed. The system is consisted of LED markers, a digital camera connected to a computer and a marker detecting program. LED markers are attached to hip, knee, ankle joint and fifth metatarsal in the sagittal plane. Playstation3 eye which is selected as a main digital camera in this paper has many merits for using motion capture, such as high FPS (Frame per second) about 180FPS, $320{\times}240$ resolution, and low-cost with easy to use. The maker detecting program was made by using Labview2010 with Vision builder. The program was made up of three parts, image acquisition & processing, marker detection & joint angle calculation, and output section. The digital camera's image was acquired in 95FPS, and the program was set-up to measure the lower-joint angle in real-time, providing the user as a graph, and allowing to save it as a test file. The system was verified by pedalling at three saddle heights (knee angle: 25, 35, $45^{\circ}$) and three cadences (30, 60, 90 rpm) at each saddle heights by using Holmes method, a method of measuring lower limbs angle, to determine the saddle height. The result has shown low average error and strong correlation of the system, respectively, $1.18{\pm}0.44^{\circ}$, $0.99{\pm}0.01^{\circ}$. There was little error due to the changes in the saddle height but absolute error occurred by cadence. Considering the average error is approximately $1^{\circ}$, it is a suitable system for quantitative dynamic fitting evaluation. It is necessary to decrease error by using two digital camera with frontal and sagittal plane in future study.
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참고문헌 (17)
참고문헌 신청
Asplund, C. / 2004 / Knee pain and bicycling / The Physician and Sports Medicine 32(4):1~12
Bae, J. H. / 2014 / A study on lower limb joint angles and muscle activities during maximal and sub-maximal pedaling by saddle heights / The 15th International Conference on Biomedical Engineering IFMBE Proceedings 43:748~751
Bini, R. / 2011 / Effects of Saddle Position on Pedalling Technique and Methods to assess Pedalling Kinetics and Kinematics of Cyclists and Triathletes
Burke, E. / 2003 / High-tech Cycling. 2nd edition / Human Kinetics
Callaghan, M. J. / 2005 / Lower body problems and injury in cycling / Journal of Bodywork and Movement Therapies 9(3):226~236
Bae, J. H. / 2014 / A study on lower limb joint angles and muscle activities during maximal and sub-maximal pedaling by saddle heights / The 15th International Conference on Biomedical Engineering IFMBE Proceedings 43:748~751
Bini, R. / 2011 / Effects of Saddle Position on Pedalling Technique and Methods to assess Pedalling Kinetics and Kinematics of Cyclists and Triathletes
Burke, E. / 2003 / High-tech Cycling. 2nd edition / Human Kinetics
Callaghan, M. J. / 2005 / Lower body problems and injury in cycling / Journal of Bodywork and Movement Therapies 9(3):226~236
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