2. Before the start of the competition, the referee should announce to the athletes the take-off height and the lifting height of the crossbar after each round of competition. This plan will continue until there are only 65,438+0 winners or the first place is equal.
3. After each round, the elevation of the crossbar shall not be less than 2 cm, and the elevation of the crossbar shall not be increased;
4. Athletes must take off with one foot;
5. Once the competition starts, athletes are not allowed to use the run-up lane or take-off area for practice.