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Short Course Prevention Factor
The short course prevention factor (SCPF) is a multiplicative factor or coefficient used in the sport of athletics, specifically road running, to ensure that the measured length of a course is at least as long as the desired length of the course. World Athletics, the international governing body for athletics, as well as USA Track & Field, the national governing body for the United States, specify the numerical factor of the SCPF to be 1.001. The SCPF has important implications when verifying world record A world record is usually the best global and most important performance that is ever recorded and officially verified in a specific skill, sport, or other kind of activity. The book ''Guinness World Records'' and other world records organizatio ... performances. However, just because the SCPF has been added to the measurement calculation, that does not mean that a 10k course is 10,010 meters in length. The SCPF is designed to make sure that, in spite of wobble of the bicycle u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coefficient
In mathematics, a coefficient is a Factor (arithmetic), multiplicative factor involved in some Summand, term of a polynomial, a series (mathematics), series, or any other type of expression (mathematics), expression. It may be a Dimensionless quantity, number without units, in which case it is known as a numerical factor. It may also be a constant (mathematics), constant with units of measurement, in which it is known as a constant multiplier. In general, coefficients may be any mathematical expression, expression (including Variable (mathematics), variables such as , and ). When the combination of variables and constants is not necessarily involved in a product (mathematics), product, it may be called a ''parameter''. For example, the polynomial 2x^2-x+3 has coefficients 2, −1, and 3, and the powers of the variable x in the polynomial ax^2+bx+c have coefficient parameters a, b, and c. A , also known as constant term or simply constant, is a quantity either implicitly attach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athletics (sport)
Athletics is a group of sporting events that involves competitive running, jumping and throwing. The most common types of athletics competitions are track and field, road running, cross country running, cross-country running, and racewalking. The results of racing events are decided by finishing position (or time, where measured), while the jumps and throws are won by the athlete that achieves the highest or furthest measurement from a series of attempts. The simplicity of the competitions, and the lack of a need for expensive equipment, makes athletics one of the most common types of sports in the world. Athletics is mostly an individual sport, with the exception of relay (athletics), relay races and competitions which combine athletes' performances for a team score, such as cross country. Organized athletics are traced back to the ancient Olympic Games from 776 BC. The rules and format of the modern athletics events, events in athletics were defined in Western Europe an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Running
Road running is the sport of running on a measured course over an established road. This differs from track and field on a regular track and cross country running over natural terrain. These events are usually classified as long-distance running, long-distance according to athletics (sport), athletics terminology, with races typically ranging from 5 kilometers to 42.2 kilometers in the marathon. They may involve large numbers of runners or wheelchair racing, wheelchair entrants. Since the late 2010, some road running events also offer Nordic walking, Nordic Walking as a separate competition along the same route. The four most common World Athletics recognized distances for road running events are 5K runs, 10K runs, half marathons and marathons. Running on the road is an alternative surface to running on a trail, track, or treadmill. For many people looking to participate in running as an activity or sport, there are multiple opportunities that can be found on the road. Road ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Athletics
World Athletics, formerly known as the International Amateur Athletic Federation and International Association of Athletics Federations and formerly abbreviated as the IAAF, is the international sports governing body, governing body for the sport of athletics, covering track and field, cross country running, road running, racewalking, race walking, mountain running, and ultramarathon, ultra running. Included in its charge is the standardization of rules and regulations for the sports, certification of athletic facilities, recognition and management of list of world records in athletics, world records, and the organisation and sanctioning of athletics competitions, including the World Athletics Championships. The organisation's president is Sebastian Coe of the United Kingdom, who was elected to the four-year position in 2015 and re-elected in 2019 for a second four-year term, and then again in 2023 for a third four-year term. History The process to found World Athletics began in S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sport Governing Body
A sports governing body is a sports organisation that has a regulatory or sanctioning function. Sports governing bodies come in various forms and have a variety of regulatory functions, including disciplinary action for rule infractions and deciding on rule changes in the sport that they govern. Governing bodies have different scopes. They may cover a range of sport at an internationally acceptable level, such as the International Olympic Committee and the International Paralympic Committee, or only a single sport at a national level, such as the Rugby Football League. National bodies will largely have to be affiliated with international bodies for the same sport. The first international federations were formed at the end of the 19th century. Types of sports governing bodies Every sport has a different governing body that can define the way that the sport operates through its affiliated clubs and societies. This is because sports have different levels of difficulty and skil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Track & Field
USA Track & Field (USATF) is a United States national governing body for the sports of track and field, cross country running, road running, and racewalking (known as the sport of athletics outside the US). The USATF was known between 1979 and 1992 as ''The Athletics Congress'' (TAC) after its spin-off from the Amateur Athletic Union (AAU), which governed the sport in the US through most of the 20th century until the Amateur Sports Act of 1978 dissolved its responsibility. Based in Indianapolis, USATF is a non-profit organization with a membership of more than 130,000. The organization has three key leadership positions: CEO Max Siegel, Board of Directors Chair Steve Miller, and elected president Vin Lananna. U.S. citizens and permanent residents can be USATF members (annual individual membership fee: $35 for 18-year-old members and younger, $65 for the rest), but permanent residents can only participate in masters events in the country, and they cannot win USATF medals, prize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Record
A world record is usually the best global and most important performance that is ever recorded and officially verified in a specific skill, sport, or other kind of activity. The book ''Guinness World Records'' and other world records organizations collates and publishes notable records of many. Terminology In the United States, the form World's Record was formerly more common. The term The World's Best was also briefly in use. The latter term is still used in athletics (sport), athletics events, including track and field and road running to describe good and bad performances that are not recognized as an official world record: either because it is not an event where World Athletics tracks the record (e.g. the 150 m run or individual events in a decathlon), or because it does not fulfill other rigorous criteria of an otherwise qualifying event (e.g. the Great North Run half-marathon, which has an excessive downhill gradient). The term is also used in video game speedrunning for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jones Counter
The Jones Counter is a type of bicycle odometer which adds the function of a surveyor's wheel to a bicycle. It was developed in 1971 by Alan Jones to accurately measure the length of road running race courses. The counter has gears that drive a mechanical digital counter. One count typically corresponds to about 1/20 of a wheel revolution (this varies if a different gear ratio is used); this provides a resolution of about 10 cm in course length, although overall accuracy, depending on calibration and other factors, is lower, but normally better than 1 part in 1,000. Almost all road running courses in the world are measured with this device. The Jones Counter has been used to measure all Olympic Marathon courses since the 1976 Montreal Olympics except for the 1980 Moscow Olympics. In addition, it has often been used to measure Olympic Road Race Walking Courses. Models Clain Jones Counter The original production version was manufactured by Alan Jones's son Clain from 1973 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sports Rules And Regulations
The regulation of sport is usually done by a sport governing body for each sport, resulting in a core of relatively invariant, agreed rules. People responsible for leisure activities often seek recognition and respectability as sports by joining sports federations such as the International Olympic Committee, or by forming their own regulatory body. In this way sports evolve from leisure activity to more formal sports: relatively recent newcomers are BMX cycling, snowboarding, wrestling, etc. Some of these activities have been popular but uncodified pursuits for different lengths of time. Indeed, the formal regulation of sport is a relatively modern and increasing development. This method promotes a sport globally, in a very successful way. It also promotes the universality of each sport, by ensuring that the same gameplay rules are being practiced worldwide, using a standardized/homogenous international gameplay rule system (sanctioned by the respective international sports gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
