Shot put and discus shoes11/14/2022 ![]() WU20R = World Under 20 Record (formerly WJR - World Junior Record).Otherwise, the athlete is considered senior. When a U20 is added, it indicates an Under 20 record, which indicates an athlete under 20 years of age before a given calendar age. NR = National Record (for a specific country).Until a record is ratified, it is regarded as "Pending" which is sometimes indicated by a following P. Each body has their own procedure for ratifying the records: for example, USATF, the governing body for the United States, only ratifies records once a year at their annual meeting at the beginning of December. On the world level, that is World Athletics. Most records are subject to ratification by the governing body for that record. Rules specify if a tie is broken this way, that all heats involved are recorded with the same timing system. These times to the thousandth are not used for record purposes but times to the thousandth can be used to break ties between adjacent heats. Occasionally, when breaking ties using photo finish, times are displayed to the thousandth of a second. Results frequently indicate two times, the "gun time" would be the official time from the firing of the starting pistol, but the mat time shows the time the shoe crossed a sensing mat at the start line to the time the shoe crossed the sensing mat at the finish line. Depending on the size of the field, some athletes could be several city blocks away from the start line and in the large crowd, could take minutes to get across the line. Most road races cannot fit all participants onto the start line. SHOT PUT AND DISCUS SHOES FULLAccurate to a full second, this is not significant, but in breaking microscopic ties, the data does not correspond to timing rules. The RFID detection system times the transponder chip, usually located on a runner's shoe as opposed to the official timing of the torso. Transponder timing is becoming more common. A period is used to separate seconds from hundredths of a second. To distinguish a full second time with hours, from a minute time with hundredths of a second, colons are used to separate hours from minutes, and minutes from seconds. Road race times are only considered accurate to a full second. When detected, reports of these times are followed by a "c" or ' to indicate converted times. In these cases, some meets have displayed a 4 or a 0 in the hundredths column for all races. But many meets displayed the converted marks accurate to the hundredth making the results look like they were taken with fully automatic timing. 24 to get a time for comparison purposes only. The proper procedure for converting hand times would be to round any hundredths up to the next higher even tenth of a second and then add the. Hand times involve human beings reacting, pushing the stopwatch button when they see the smoke or hear the sound of the starting pistol, then reacting (possibly anticipating) the runner crossing the finish line. Human reaction time is not perfectly identical between different human beings. Hand times are not accurate enough to be accepted for record purposes for short races. Some low level meets have even hand timed runners and have switched places according to the time displayed on the stopwatch. Frequently those readings are recorded, but are not accepted as valid (leading to confused results). Many electronic hand stopwatches display times to the hundredth. With two different timing methods came the inevitable desire to compare times. Over this period of evolution, some reports show hand times also followed with an "h" or "ht" to distinguish hand times. Frequently in those cases there is a mark to the 100th retained for that race. If the mark was set before 1977, a converted time to the tenth was recorded for record purposes, because they did not have a system to compare between the timing methods. Hand times (watches operated by human beings) are not regarded as accurate and thus are only accepted to the accuracy of a tenth of a second even when the watch displays greater accuracy. As they are now commonplace, automatic times are now expressed using the hundredths of a second. As this evolution has occurred, the rare early times were specified as FAT times. Evolving since experiments in the 1930s, to their official use at the 1968 Summer Olympics and official acceptance in 1977, fully automatic times have become common. ![]()
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