| （1.Department of Anatomy，Cangzhou Medical College，Cangzhou 061001，China；2.School of Kinesiology，Shanghai University of Sport，Shanghai 200438，China） Abstract: In order to measure the angular velocities and angular accelerations of the joints of lower limbs making a vertical jumping move before and after super-isometric resistance training, to calculate the rigidities of the joints of lower limbs, and to observe the dynamic effects of super-isometric resistance training on the joints of lower limbs, the authors randomly divided 16 young male basketball players into a super-isometric resistance training group and a conventional training control group, collected kinetic and dynamic data of each move by using VICON and a 3D force measuring station, calculated the angular velocities and angular accelerations of the joints of lower limbs, and the net joint moment of lower limbs by means of inverse dynamics, and revealed the following findings: the angular velocities and angular rigidities of hip and ankle joints of players in the super-isometric resistance training group were significantly higher than those of players in the control group, while there was no significant difference in the angular velocities and angular rigidities of knee joints between players in the two groups; the angular velocities of hip, knee and ankle joints of players in the super-isometric resistance training group were significantly higher than those of players in the control group. The said findings indicated that super-isometric resistance training can reduce elongation, shorten cycle supporting time, shorten amortization period, enhance the energy conversion capacity of the muscle-tendon complex, and boost the explosive power of lower limb muscles, is suitable for events which re-quire the angular velocity, angular acceleration and explosive power of joints.
Key words: sports biomechanics；super-isometric resistance training；angular velocity of joints；angular acceleration of joints；angular rigidity of joints |
