| The weight parameters of segments of human body include segment weight, location of center of gravity of segment and the moment of gravity of segment, and they are the basic parameters of segment inertia parameters that can reflect the structure of configuration and character of mass distribution of human body. Because the weight parameters of segments are fundamental for building the model of human body and analyzing video recording of movement technique of human body, which are very essential to improve the accuracy of analyzing results, the study on measuring weight parameters of segments has been being one great basic task in sports biomechanics all the time, and simultaneously is the important part of subjects of work efficiency, humankind and human body science etc., which is of importance in both learning value and application.Most past studies on segment inertia parameters of human body was based on symmetry model of human body, and most from the measurement on normal adults which is not fit for specific manhood; in addition, those studies of higher precision adopted methods which are of radioactivity, and it is not fit for juveniles. So it is necessary for us to search the method of measurement to provide more individual parameters of segments of human body.In this paper we completed 3 parts: 1) we studied the relation between segment center of gravity and general gravity center of human body applying the knowledge of mechanics, anatomy and sports biomechanics, and advanced an innovation theory, i.e. the theory of measuring the weight parameters of moving segment of human body applying balance boards; 2) we developed 2 new types of balance boards to acquire the method and procedure of measuring based on the theory mentioned above; 3) in order to provide the weight parameters of small segments, e.g. forearm, hand, shank and foot, we introduced the theory of optimization to calculate them. In order to check the accuracy of the theory of measuring segment weight parameters applying balance boards, precision of 2 types of instruments and efficiency of introducing the theory of optimization, we selected 9 male subjects randomly for measuring segment parameters, compared our measuring results to the other study before. To sum up, in this paper we accomplished 5 works in all, i.e. putting forward one new concept - moving segment of human body, subjoining one new parameter - the moment of segment weight, developing one new theory - the theory of measuring weight parameters of moving segments applying balance boards, making one set of instruments -two types of balance boards, i.e. R-II and R-I balance board, and searching one kind of measuring procedure -the procedure for measuring segment weight parameters in vivo. Our conclusions are as follows:1) We carved out one method that could provide more individual weight parameters of segments of human body, and this method was more economical and convenient.2) We put forward the concept of moving segment of human body and subjoined the moment of segment weight, and which were the foundations of the theory of measuring based on balance boards. The concept of moving segment could reflect all mass of segment that participated in movement, and the moment of segment weight could lessen errors when integrating parameters.3) The principle of circle of general gravity center showed the relation between center of movingsegment and general gravity center in accuracy, and was the foundation of the theory of measuring the moment of segment weight; balanced status, limited balanced status and non-balanced status are 3 sequential processes generated in measuring the location of center of moving segment, and which provided one method for measuring the location. We integrated measuring the moment of segment weight and measuring the location of center of segment to firstly overcome the difficulty of measuring the weight parameters of moving segment of human body in vivo applying balance boards.4) We made R-II balance board and developed the computi...
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