出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：The purpose of the present study was to examine the force-velocity-power relationships of the ankle plantar-flexors and dorsi-flexors to clarify details of muscle dynamics in elderly males. A total of 15 elderly males ranging in age from 65 to 73 years, and 15 male college students aged 18 to 22 years, were enrolled. In previous studies, force-velocity of the ankle joint muscle had been estimated without measuring higher velocities with an isokinetic machine. Therefore, a specially designed machine was used to determine the force-velocity relationships directly by measuring all of the velocity conditions from 0 to maximum. The force and velocity values including the maximum muscle force (Fmax), maximum velocity (Vmax), and maximum power (Pmax) were measured using the after-load method. The results showed that the force and velocity values were well fitted to the Hill characteristic equation: (F+a)(V+b)=(Fmax+a) b for both ankle plantar-flexors and dorsi-flexors in both the elderly and college groups. The elderly group showed significantly lower values for the primary parameters Fmax, Vmax, and Pmax than the college group for both the ankle plantar-flexors and dorsi-flexors. Because of the higher a/Fmax in the elderly group, the maximum power of plantar-flexion in this group appeared relatively higher than in the college group. Overall, it was concluded that the ankle joint muscles of elderly individuals showed a unique fit to the Hill characteristic equation.
其他摘要：The purpose of the present study was to examine the force-velocity-power relationships of the ankle plantar-flexors and dorsi-flexors to clarify details of muscle dynamics in elderly males. A total of 15 elderly males ranging in age from 65 to 73 years, and 15 male college students aged 18 to 22 years, were enrolled. In previous studies, force-velocity of the ankle joint muscle had been estimated without measuring higher velocities with an isokinetic machine. Therefore, a specially designed machine was used to determine the force-velocity relationships directly by measuring all of the velocity conditions from 0 to maximum. The force and velocity values including the maximum muscle force (Fmax), maximum velocity (Vmax), and maximum power (Pmax) were measured using the after-load method. The results showed that the force and velocity values were well fitted to the Hill characteristic equation: (F+a)(V+b)=(Fmax+a) b for both ankle plantar-flexors and dorsi-flexors in both the elderly and college groups. The elderly group showed significantly lower values for the primary parameters Fmax, Vmax, and Pmax than the college group for both the ankle plantar-flexors and dorsi-flexors. Because of the higher a/Fmax in the elderly group, the maximum power of plantar-flexion in this group appeared relatively higher than in the college group. Overall, it was concluded that the ankle joint muscles of elderly individuals showed a unique fit to the Hill characteristic equation.
关键词：加齢;筋パワー;ヒルの特性方程式
其他关键词：aging ; muscle power ; Hill characteristic equation
