High Jump

The high jump is a track and field athletics event in which competitors must jump over a horizontal bar placed at measured heights without the aid of any devices. It has been contested since the Olympic Games of ancient Greece. Over the centuries since, competitors have introduced increasingly more effective techniques to arrive at the current form. Javier Sotomayor (Cuba) is both the indoor and outdoor world record holder in this event with jumps of 2.43 metres (7 ft 11.67 in) and 2.45 metres (8 ft 0.46 in), respectively. Sotomayor's record, set in 1993, is the longest standing in the history of the men's high jump. Stefka Kostadinova (Bulgaria) has held the women's world record 2.09 metres (6 ft 10.28 in) since 1987, the longest-held record in the event.

The first recorded high jump event took place in Scotland in the 19th century. Early jumpers used either an elaborate straight-on approach or a scissors technique. In the latter, the bar was approached diagonally, and the jumper threw first the inside leg and then the other over the bar in a scissoring motion. Around the turn of the 20th century, techniques began to modernise, starting with the Irish-American M.F. Sweeney's Eastern cut-off. By taking off as if with the scissors, but extending his back and flattening out over the bar, the Sweeney achieved a more economic clearance and raised the world record to 6 feet 5.625 inches (1.97 m) in 1895.

Another American, M.F. Horine, developed an even more efficient technique, the Western roll. In this style, the bar again is approached on a diagonal, but the inner leg is used for the take-off, while the outer leg is thrust up to lead the body sideways over the bar. Horine increased the world standard to 6 feet 7 inches (2.0 m) in 1912. His technique predominated through the Berlin Olympics of 1936, in which the event was won by Cornelius Johnson at 2.03 metres (6 ft 8 in).

American and Russian jumpers held the playing field for the next four decades, and they pioneered the evolution of the straddle technique. Straddle jumpers took off as in the Western roll, but rotated their (belly-down) torso around the bar, obtaining the most economical clearance up to that time. Straddle-jumper Charles Dumas broke the elusive 7 feet (2.13 m) barrier in 1956, and American John Thomas pushed the world mark to 2.23 metres (7 ft 4 in) in 1960. Valeriy Brumel took over the event for the next four years. The elegant Soviet jumper radically sped up his approach run, took the record up to 2.28 metres (7 ft 6 in), and won the Olympic gold medal in 1964, before a motorcycle accident ended his career.
High jump shoes are different from most other track shoes in that there are an additional four holes in the heel of the takeoff shoe, where the user can insert spikes for increased traction. These extra heel spikes aid greatly in the last four to five steps of the J-approach, allowing the jumper to run on his or her curve at a fast speed without slipping. Some high jump shoes are even more technologically developed and in addition to the extra spikes on the heel, the shoes are modified to lean the direction of the approach to provide further support while running their curve. As well as the approach, high jump shoes also help and support the jumper's takeoff. The IAAF regulations specify a maximum sole thickness for both high jump and long jump shoes; competitors in all other events may wear shoes with soles of any thickness.