The Research On The Swimming Special Strength Evaluation And Diagnosis

As the swimming events of athletic sports level unceasing enhancement, people gradually realize that:1, the absolute value of the special forces can not grow indefinitely, with the increase of years of special strength training to increase the rate gradually reduced.2, not the absolute value of the special forces the bigger the better, the absolute value of the simple pursuit of specific strength increases, the deformation of muscle stiffness and technical movement, leading to stagnation of sports performance, or even declining, while the specific strength and athletic skills, the close integration of Specific ways to exert power and to exert a scientific process,"quantitative"research is the swimming current problems to be solved.This research to the swimming athlete H3type pulley cable in use process, the existing problems in the development and developed H4type pulley cable, increased tension process data acquisition function. By adopting incremental revolving encoder, the data acquisition card, monitor equipment can be directly acquisition, processing training information, show athletes instant training data.Experimental results show that equipment in high frequency components in use process, the normal operation, time displacement curve test sensitive, accurate data, reproducible and can satisfy the different age and level of training athletes training needs.This system has set up the kinematics index, dynamic index, it can display pull times (times), pull speed (beats per minute) and power amount (joule), and real-time display time displacement curve, can reflect intuitive and dynamic tension variation process.Test results show that:five athletes unit of time to pull number, power, time displacement curve and unit time displacement amplitude variation are showed different features. In qualitative evaluation, three strength athletes pulling force frequency and power are larger than technology athletes; Tension process displacement amplitude variation results show that strength athletes to power control ability are good in technology-orientation athletes. Wangchengxiang stroke curve following a tu feng, explain this athlete at some point in stroke process, this forcibly not particularly hard balance of technology can cause waste of energy. If in the whole process of stroke, the more even some force will be more efficient.Conclusion:the results of the experiment indicate that "time-displacement" quantitative evaluation method to curve swimmer special strength diagnosis, the method is feasible.Special strength and athletic performance quantitative evaluation of the relationship between research, needs to be further accumulation diagnosis data.