족관절 보조기를 착용한 고령자의 족관절 족저굴곡 토크 보조특성 분석
Analysis of the Assist Characteristics for Torque of the Ankle Plantarflexion in Elderly Adults Wearing the Ankle-Foot Orthosis
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초록
Ankle-foot orthosis with a pneumatic rubber actuator, which is intended for the assistance and the enhancement of ankle muscular activities was developed. In this study, the effectiveness of the system was investigated during plantarflexion motion of ankle joint. To find a effectiveness of the system, the subjects performed maximal voluntary isokinetic plantarflexion contraction on a Biodex-dynamometer. Plantarfexion torque of the ankle joint is assisted by subject’s soleus muscle that is generated when ankle joint do plantarflexion motion. We used the muscular stiffness signal of a soleus muscle for feedback control of ankle-foot orthosis as physiological signal. For measurement of this signal, we made the muscular stiffness force sensor. We compared a muscular stiffness force of a soleus muscle between with feedback control and without it and a maximal plantarflexion torque between not wearing a ankle-foot orthosis, without feedback control wearing it and with feedback control wearing it in each ten elderly adults. The experimental result showed that a muscular stiffness force of a soleus muscle with feedback control was reduced and plantarflexion torque of an ankle joint only wearing ankle-foot orthosis was reduced but a plantarflexion torque with feedback control was increased.The amount of a increasing with feedback control is more higher than the amount of a decreasing only wearing it. Therefore, we confirmed the effectiveness of the developed ankle-foot orthosis with feedback control.
Abstract
Ankle-foot orthosis with a pneumatic rubber actuator, which is intended for the assistance and the enhancement of ankle muscular activities was developed. In this study, the effectiveness of the system was investigated during plantarflexion motion of ankle joint. To find a effectiveness of the system, the subjects performed maximal voluntary isokinetic plantarflexion contraction on a Biodex-dynamometer. Plantarfexion torque of the ankle joint is assisted by subject’s soleus muscle that is generated when ankle joint do plantarflexion motion. We used the muscular stiffness signal of a soleus muscle for feedback control of ankle-foot orthosis as physiological signal. For measurement of this signal, we made the muscular stiffness force sensor. We compared a muscular stiffness force of a soleus muscle between with feedback control and without it and a maximal plantarflexion torque between not wearing a ankle-foot orthosis, without feedback control wearing it and with feedback control wearing it in each ten elderly adults. The experimental result showed that a muscular stiffness force of a soleus muscle with feedback control was reduced and plantarflexion torque of an ankle joint only wearing ankle-foot orthosis was reduced but a plantarflexion torque with feedback control was increased.The amount of a increasing with feedback control is more higher than the amount of a decreasing only wearing it. Therefore, we confirmed the effectiveness of the developed ankle-foot orthosis with feedback control.
참고문헌 (9)
- Perry J, "Kinesiology of lower extremity bracing", Clinical Orthopaedics and Related Research, 102, pp.18~31 (1974)
- 황성재, "마비 환자의 정상적 보행을 위한 능동형 단하지 보조기 개발", 대한인간공학회지, 26(2), pp.131~136 (2007), 대한인간공학회
- D. P. Ferris, "An ankle-foot orthosis powered by artificial pneumatic muscles", Journal of Applied Biomechanics, 21, pp.189~197 (2005)
- K. E. Gordon, "Mechanical performance of artificial pneumatic muscles to power an ankle-foot orthosis", Journal of Biomechanics, 39, pp.1832~1841 (2006)
- S. Yamamoto, "Development of an ankle-foot orthosis with dorsiflexion assist. Part 2: structure and evaluation", J Prosthet Orthot, 11, pp.24~28 (1999)
- O. Yokoyama, "Kinematic Effects on Gait of a Newly Designed Ankle-Foot Orthosis with Oil Damper Resistance : A case Series of 2 patients With Hemiplegia", Archives of Physical Medicine and Rehabilitation, 86, pp.162~166 (2005)
- M. Sakaguchi, "Force Display System Using Particle-Type Electrorheological Fluids", Proceedings of the 1998 IEEE International Conference on Robotics and Automation, pp.2586~2590 (1998)
- J. A. Norris, "Effect of augmented plantar flexion power on preferred walking speed and economy in young and older adults", Gait & Postures, 25, pp.620~627 (2007)
- S. Moromugi, "Muscle stiffness sensor to control an assistance device for the disabled", Artificial Life and Robotics, 8(1), pp.42~45 (2004)