歩行時の下肢の筋の作動時期と筋力についての実験的解析(3部運動の解析)

概要

論文の詳細を見る
In this paper, we deal with the activities of muscle groups about joints concerned with walking motion. Several mechanical properties of muscle activities during walking motion are clarified by the analytical results of experimental data. These results are confirmed by considering their correspondence to the physiological appearance of muscles. Muscles are classified into 1-joint muscles and 2-joint muscles. It is considered that the latter particularly contribute to dynamic stability during motion. However, equations of motion of each element of the leg are concerned only with the sum of all muscle activities which operate the element, so that to separate the activities of 2-joint muscles from the total is impossible. In some approaches, assumptions have been made on the spending of energy during walking motion or on the synchronizing of the complicated activities of muscles. However, it seems that these assumptions have rather lowered the reliability of solutions. We tried to clarify the activity of each muscle group by analyzing the observed results of human gait and the change of moments about joints. First of all, we investigated what motions of elements are respectively produced by moments about the joints of the hip, knee, and ankle at each second and which functions among those of spring, damper, and motor work at each second. Then we investigated how the moment about one joint relates to the moment about another joint. Thus the activity of a 2-joint muscle is found and then that of a 1-joint muscle is obtained. Results are summarized as follows: It was found that fatigue is almost evenly averaged over all muscle groups because power is skillfully distributed to each muscle group, and the energy loss during walking motion diminishes because of sufficient spring action. It was also found that the control of muscle action is very simple, different from the usual opinion. The spring action of muscles and the skillful action of 2-joint muscles provide suitable motion as a quick response to conditions of road surface in spite of the simple control mechanism. Further, it was found that the stretching and the contracting velocities of muscle actions are respectively constant, and it is suggested that the muscle activities may be controlled in response to strains produced in bones. These results give not only a new understanding of the human body, but also important suggestions for designing delicate machine motions.
バイオメカニズム学会の論文
1984-04-25

歩行時の下肢の筋の作動時期と筋力についての実験的解析(3部運動の解析)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク

歩行時の下肢の筋の作動時期と筋力についての実験的解析(3部 運動の解析)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク

歩行時の下肢の筋の作動時期と筋力についての実験的解析(3部運動の解析)