| Stamina to work long hours is an organism's ability to fight fatigue under. In many sports competition, the requirements for endurance levels are very high, high endurance level is achieved outstanding athletic performance protection. The specific speed endurance is the ability of anti-fatigue intensity, in particular the strength of continuous movement, speed endurance level of technology will directly affect the completion of action. Many organs of the body was in the distribution of symmetry in functional asymmetry was. Speed endurance in the lower extremities on both sides of the body if there were differences? If there are differences, whether the body's speed endurance levels will have a greater impact? Through targeted training can reduce the differences? What is the difference between the reasons for the formation of? The use of literature, expert interviews, experiments and other research methods, access to related research through the collection and theoretical knowledge as well as experts to visit the colleges, teachers, and use Isomcd2000 joint muscle strength testing system to 10 men before and after training three athletes tested knee isokinetic concentric contraction, the rate targeted by six weeks endurance training on the subjects before and after training and the basic physical fitness test knee isokinetic concentric contraction-related data collection. Subjects before and after training on the basic physical and angular velocity in the four kinds of non-dominant side with the dominant side of the flexors and extensors peak torque and fatigue index were analyzed following conclusions:1. After 6 weeks of speed endurance training in basic physical fitness test, training, bilateral lower extremities before jumping on one leg five significant difference between scores (p<0.01), bilateral lower extremities results after training significantly different (p<0.05), Indicating that targeted training can change the difference in the level of bilateral lower extremities, lower extremities on both sides of the training can reduce the gap between the two sides to work closer to the lower limb muscles. After training, both limbs in the standing five-jump,200 meters (after 80 meters) in mind that when the rate of growth for both sides of the difference in performance decreases in lower extremity movement together to complete the project coordination of both limbs of the increased capacity, the coordination capacity of limb muscles to improve the ability to work making the strengthening of the muscles ability to work to improve athletic performance enhancement makes.2. Training ago in 60°/s angular velocity of the lower sides of the flexors and extensors peak torque significantly different (p<0.05), at 120°/s,180°/s,240°/s peak when both sides of the flexors and extensors Torque significant difference (p <0.01), on both sides of the four angular velocity than the flexor extensor peak torque of the large, but are faster with the angular velocity gradually decreased. Both sides of the flexors and extensors of the fatigue index in the 120°/s,180°/s,240°/s when the difference was significant (p<0.01), fatigue index decreased with the increase of angular velocity. Description of the fatigue index decreased as the angular velocity of the faster, less strength, muscle fatigue capacity is gradually increased.3. training in the 60°/s,120°/s,180°/s,240°/s angular velocity under the dominant side and non-dominant side of the flexors and extensors peak torque significantly different (p<0.05). On both sides of the four angular velocity than the flexor extensor peak torque of the large, but are faster with the angular velocity gradually decreased. Both sides of the flexors and extensors of the fatigue index in the 120°/s,180°/s,240°/s the difference was significant (p<0.05), fatigue index decreased with the increase of angular velocity. Description of the fatigue index decreased faster with the speed and intensity of the weakened muscle resistance to fatigue gradually.4. before and after training both sides of the knee flexors and extensors isokinetic concentric contraction Differences between peak torque analysis:in 60°/s angular velocity, the difference between before and after training were significantly (P<0.05); at 120°/s,180°/s,240°/s angular velocity, the difference was significant before training (p<0.01), after training significantly different (P<0.05), shows that, after training the participants on both sides of the gap decreased lower extremity muscle strength. In the 120°/s,180°/s,240°/s angular velocity, the training prior to both sides of the knee flexors and extensors isokinetic concentric contraction of the fatigue index were significant (P<0.01), after training significantly different (P<0.05), indicating that subjects trained to the level of bilateral lower extremities gap decreased muscle endurance. |
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