| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a jumping power measuring instrument to be used when measuring jumping power and safely and easily measuring particularly running jumping power, which has been difficult to measure with free movement by a conventional jumping power measuring instrument. <P>SOLUTION: The measuring instrument is constituted by installing a base 1 and a required number of chains 2 in the ladder-like positions of the base, inserting a string in the front face of the chains while inserting a rubber plate string 4 in the back face of the chains, and firmly fixing the rubber plate string, without fixing the string so as to be freely movable. <P>COPYRIGHT: (C)2012,JPO&INPIT |
