Straddle technique straight, and head and trunk pass the bar at the same time. Charles Dumas, the first high jumper to clear 7 ft, and John Thomas (silver medal at the 1964 Olympics) used this technique. Valeriy Brumel (gold in 1964) dove a little bit, his head going over the bar before his trunk. Probably the most extreme exponent of the dive straddle was Bob Avant, who cleared 7 ft. in 1961. Avant's technique was close to a pure dive, with just a small knee lift on his lead leg. The last world record jump with the straddle technique was Vladimir Yashchenko's
IAAF World Youth Championships in Athletics IAAF World Youth Championships in Athletics The IAAF U18 Championships in Athletics (until 2015 known as IAAF World Youth Championships in Athletics) was a global athletics event comprising track and field events for competitors who were 17 or younger (youth = Under-18). The event was organized by International Association of Athletics Federations (IAAF). It was held biennially from 1999–2017. In the 206th IAAF Council Meeting, held after the 2016 Summer Olympics, the council decided to conclude the world championship for under-18 athletes after the 2017 event. The decision was made with the intention of improving under-18 competitions at continental level