| 摘要 |
An apparatus and method are provided which enables a performer to enhance performance evaluation of performing with a human-powered vehicle having one or more wheel(s) wherein measurements of (1) position, velocity and acceleration of said vehicle out of a starting gate and, optionally, one or more corner(s) of a performance track and, optionally, (2) position, velocity and acceleration and/or conservation of momentum of said vehicle over one or more various obstacles within the performance track are made with a resolution of sufficient sensitivity to make such improvements. The invention has particular application in cycling activities, such as BMX cycling.
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