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Tapering (sports)
In sports, tapering refers to the practice of reducing exercise in the days just before an important competition. Tapering is customary both in endurance sports, such as long-distance running and swimming, and strength sports, such as weightlifting and sprinting. For many athletes, a significant period of tapering is essential for optimal performance. The tapering period frequently lasts as much as a week or more. This tapering means gradually reducing the exercise over a short period of time then stopping completely when leading up to competitions. Tapering periods As a general rule of thumb, longer endurance events are generally preceded by longer tapering periods, with the curious exception of particularly long endurance competitions, such as ultramarathons and multiday races. In swimming the opposite is true; distance swimmers will often taper for only a week or less, while strength athletes taper for up to 3 weeks. Typically, tapering for relatively short endurance events t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sports
Sport pertains to any form of competitive physical activity or game that aims to use, maintain, or improve physical ability and skills while providing enjoyment to participants and, in some cases, entertainment to spectators. Sports can, through casual or organized participation, improve participants' physical health. Hundreds of sports exist, from those between single contestants, through to those with hundreds of simultaneous participants, either in teams or competing as individuals. In certain sports such as racing, many contestants may compete, simultaneously or consecutively, with one winner; in others, the contest (a ''match'') is between two sides, each attempting to exceed the other. Some sports allow a "tie" or "draw", in which there is no single winner; others provide tie-breaking methods to ensure one winner and one loser. A number of contests may be arranged in a tournament producing a champion. Many sports leagues make an annual champion by arranging games ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runner's World
''Runner's World'' is a globally circulated monthly magazine for runners of all skills sets, published by Hearst in Easton, Pennsylvania, in the United States. Before its acquisition by Hearst, it was founded and published by Rodale, Inc. in Emmaus, Pennsylvania. History ''Runner's World'' was originally launched in 1966 by Bob Anderson as ''Distance Running News, '' and Anderson published the magazine by himself for several years from his home in Manhattan, Kansas. Runner and writer Hal Higdon had been writing for the magazine since the beginning (2nd edition). In 1969, Anderson changed the name of the magazine to ''Runner's World''. He brought on Joe Henderson as chief editor and moved the editorial offices, now named World Publications, to Mountain View, California. ''Runner's World'' thrived during the 1970s " running boom", even in the face of competition from the New York-based magazine, ''The Runner''. ;Purchase by Rodale Press In the early 1980s, Bob Anderson sold a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Summer Olympic Games
The Summer Olympic Games (french: link=no, Jeux olympiques d'été), also known as the Games of the Olympiad, and often referred to as the Summer Olympics, is a major international multi-sport event normally held once every four years. The inaugural Games took place in 1896 in Athens, Greece, and the most recent edition was held in 2021 in Tokyo, Japan. The International Olympic Committee (IOC) is responsible for organising the Games and for overseeing the host city's preparations. The tradition of awarding medals began in 1904; in each Olympic event, gold medals are awarded for first place, silver medals for second place, and bronze medals for third place. The Winter Olympic Games were created out of the success of the Summer Olympic Games, which are regarded as the largest and most prestigious multi-sport international event in the world. The Summer Olympics have increased in scope from a 42-event competition programme in 1896 with fewer than 250 male competitors from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormone
A hormone (from the Greek participle , "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs by complex biological processes to regulate physiology and behavior. Hormones are required for the correct development of animals, plants and fungi. Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of production), numerous kinds of molecules can be classified as hormones. Among the substances that can be considered hormones, are eicosanoids (e.g. prostaglandins and thromboxanes), steroids (e.g. oestrogen and brassinosteroid), amino acid derivatives (e.g. epinephrine and auxin), protein or peptides (e.g. insulin and CLE peptides), and gases (e.g. ethylene and nitric oxide). Hormones are used to communicate between organs and tissues. In vertebrates, hormones are responsible for regulating a variety of physiological processes and behavioral activities such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antioxidant
Antioxidants are compounds that inhibit oxidation, a chemical reaction that can produce free radicals. This can lead to polymerization and other chain reactions. They are frequently added to industrial products, such as fuels and lubricants, to prevent oxidation, and to foods to prevent spoilage, in particular the rancidification of oils and fats. In cells, antioxidants such as glutathione, mycothiol or bacillithiol, and enzyme systems like superoxide dismutase, can prevent damage from oxidative stress. The only dietary antioxidants are vitamins A, C, and E, but the term ''antioxidant'' has also been applied to numerous other dietary compounds that only have antioxidant properties in vitro, with little evidence for antioxidant properties in vivo. Dietary supplements marketed as antioxidants have not been shown to maintain health or prevent disease in humans. History As part of their adaptation from marine life, terrestrial plants began producing non-marine a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme
Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. Almost all metabolic processes in the cell need enzyme catalysis in order to occur at rates fast enough to sustain life. Metabolic pathways depend upon enzymes to catalyze individual steps. The study of enzymes is called ''enzymology'' and the field of pseudoenzyme analysis recognizes that during evolution, some enzymes have lost the ability to carry out biological catalysis, which is often reflected in their amino acid sequences and unusual 'pseudocatalytic' properties. Enzymes are known to catalyze more than 5,000 biochemical reaction types. Other biocatalysts are catalytic RNA molecules, called ribozymes. Enzymes' specificity comes from their unique three-dimensional structures. Like all catalysts, enzymes increase the react ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycogen
Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals, fungi, and bacteria. The polysaccharide structure represents the main storage form of glucose in the body. Glycogen functions as one of two forms of energy reserves, glycogen being for short-term and the other form being triglyceride stores in adipose tissue (i.e., body fat) for long-term storage. In humans, glycogen is made and stored primarily in the cells of the liver and skeletal muscle. In the liver, glycogen can make up 5–6% of the organ's fresh weight, and the liver of an adult, weighing 1.5 kg, can store roughly 100–120 grams of glycogen. In skeletal muscle, glycogen is found in a low concentration (1–2% of the muscle mass) and the skeletal muscle of an adult weighing 70 kg stores roughly 400 grams of glycogen. The amount of glycogen stored in the body—particularly within the muscles and liver—mostly depends on physical training, bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bob Cooper (journalist)
Bob Cooper is an American freelance journalist and travel and general-interest writer. He is a former contributing editor for ''Runner's World'', a former executive editor of '' Running Times'', a competitive long distance runner, and a longtime San Francisco Bay Area resident. He held various editorial positions for ''Triathlete'', '' Inside Triathlon'', and ''City Sports'' magazines. Running and racing Cooper has run several ultramarathons and marathons. As a teenager, he was part of a cross country relay run that traversed the length of the United States from the Pacific Ocean to the Atlantic Ocean in 19+ days. Journalism career In 1973, ''Runner's World'' published Cooper's first national magazine article. Cooper continued to write for ''Runner's World'' after the magazine was sold to Rodale, Inc. in Emmaus, Pennsylvania. His articles have appeared regularly in magazines including '' Men's Journal'', ''Men's Fitness'', ''National Geographic Adventure'', ''National Geograp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long-distance Running
Long-distance running, or endurance running, is a form of continuous running over distances of at least . Physiologically, it is largely aerobic in nature and requires stamina as well as mental strength. Within endurance running comes two different types of respiration. The more prominent side that runners experience more frequently is aerobic respiration. This occurs when oxygen is present, and the body is able to utilize oxygen to help generate energy and muscle activity. On the other side, anaerobic respiration occurs when the body is deprived of oxygen, and this is common towards the final stretch of races when there is a drive to speed up to a greater intensity. Overall, both types of respiration are used by endurance runners quite often, but are very different from each other. Among mammals, humans are well adapted for running significant distances, and particularly so among primates. The capacity for endurance running is also found in migratory ungulates and a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiday Race
Multiday races are ultramarathon running events which are typically either segmented into daily events of a specified distance or time, or staged so that runners can run as far as they want, at their own discretion, over a set course or over a set number of days. Multiday races can range from continuous 48-hour track events to staged transcontinental treks. Beyond the marathon Very long endurance running events can be divided into three broad categories: the traditional marathon, the ultramarathon, defined as any event longer than the marathon, and true multiday events, which begin with the 48-hour event and can stretch out almost indefinitely, often ranging from six days to or longer. Ultramarathons, of which multiday races are a subset, include events of any distance beyond the traditional marathon distance of . Common ultra events include and 100 kilometer races. Ultras are usually considered to include all events of 50 kilometers or longer. Depending on the degree of terr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultramarathon
An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of . Various distances are raced competitively, from the shortest common ultramarathon of to over . 50k and 100k are both World Athletics record distances, but some races are among the oldest and most prestigious events, especially in North America. Around 100 miles is typically the longest course distance raced in under 24 hours but there are also longer multi-day races of or more, sometimes raced in stages with breaks for sleep. While some ultras are road races, many take place on trails, leading to a large overlap with the sports of trail running and mountain running. Overview There are two main types of ultramarathon events: those that cover a specified distance or route, and those that last for a predetermined period of time (with the winner covering the most distance in that time). The most common distances are , , , and , although many races hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
