一関節筋と二関節筋の協調モデルのリハビリテーションへの臨床応用の可能性(第1報) : スクワット動作に着目して

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Muscles involved in 2-dimensional movement of the hip and knee joints were categorized into 2 pairs of antagonistic mono-articular functional effective muscles (FEM) and, in the same joint, 1 pair of antagonistic bi-articular FEM. Observations of their functional movement by electromyography and robotic engineering techniques suggested that 360° output direction control is possible. At the ends of the four limbs, the torque on the joints due to the FEM was defined as the FEM strength (FEMS), and the output due to muscle power displayed a hexagonal distribution pattern both theoretically and experimentally. From this, we proposed a method to estimate, from the distribution of the output force, individual FEMS in subjects not bearing a load. In this study, we attempted to analyze, using a three dimension motion capture system, the squatting movements. The subjects were 15 healthy young adults (age: range 19-20 years, mean 19.4 years, male=8) with no history of orthopaedic disorders of their legs. All the subjects gave their informed consent to participate in the study. Kinematic data were obtained by monitoring trajectories of 25 reflective markers on their bodies using a MAC3D system (Motion Analysis Inc.), equipped with 8 cameras, at a sampling frequency of 120 Hz. Kinetic data were obtained using two force plates (ANIMA Inc.). The subjects performed 3 squats on the force plates. They were instructed to try to avoid inclining their trunk forward. Data were analyzed using an FEMS program and a coordination model of mono-articular and bi-articular muscles. With change in the axis of the subject's trunk and motion strategy, the output of the 3 pairs of muscles changed, and squat movements with various characteristic output patterns were observed. However, because forward inclination of the trunk was minimized, the output direction control often showed the approximated patterns. It is thought that by expressing it by the joint torque, presumed muscle activity at difficult limbs points can be determined from output direction control there.
了徳寺大学の論文

一関節筋と二関節筋の協調モデルのリハビリテーションへの臨床応用の可能性(第1報) : スクワット動作に着目して

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