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VVO2max
vV̇O2max (velocity at maximal oxygen uptake) is an intense running or swimming pace. In a constant rate exercise, this is the minimum speed for which the organism's maximal oxygen uptake is reached (after a few minutes of exercise at this intensity) ; at higher paces, any additional increase in power is provided by anaerobic processes. In an incremental exercise, it is the first speed at which any increase in exercise intensity fails to elicit an increase in oxygen consumption. The vV̇O2max of world class middle- and long-distance runners may exceed or 2:30/km pace ( or about 4:00/mile), making this speed slightly comparable to 3000 m race pace. For many athletes, vV̇O2max may be slightly slower than or mile race pace. Training Research by Véronique Billat has shown that training at vV̇O2max pace improves both V̇O2max and the economy required to maintain pace at this intensity. Training at vV̇O2max takes the form of interval workouts. For example, with 3 minu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VO2max
VO2 max (also maximal oxygen consumption, maximal oxygen uptake or maximal aerobic capacity) is the maximum rate of oxygen consumption attainable during physical exertion. The name is derived from three abbreviations: "V̇" for volume (the dot appears over the V to indicate "per unit of time"), "O2" for oxygen, and "max" for maximum. A similar measure is VO2 peak (peak oxygen consumption), which is the measurable value from a session of physical exercise, be it incremental or otherwise. It could match or underestimate the actual VO2 max. Confusion between the values in older and popular fitness literature is common. The measurement of V̇O2 max in the laboratory provides a quantitative value of endurance fitness for comparison of individual training effects and between people in endurance training. Maximal oxygen consumption reflects cardiorespiratory fitness and endurance capacity in exercise performance. Elite athletes, such as competitive distance runners, racing cyclists or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metabolic Equivalent
The metabolic equivalent of task (MET) is the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person, while performing some specific physical activity compared to a reference, set by convention at 3.5 mL of oxygen per kilogram per minute, which is roughly equivalent to the energy expended when sitting quietly. Quantitative definitions Based on oxygen utilization and body mass The original definition of metabolic equivalent of task is the oxygen used by a person in milliliters per minute per kilogram body mass divided by 3.5. Other definitions which roughly produce the same numbers have been devised, such as: : \text\ = 1 \, \frac\ = 4.184 \, \frac = 1.162 \, \frac where * kcal = kilocalorie * kg = kilogram * h = hour * kJ = kilojoule * W = watt Based on watts produced and body surface area Still another definition is based on the body surface area, BSA, and energy itself, where the BSA is expressed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactate Threshold
Lactate inflection point (LIP), is the exercise intensity at which the blood concentration of lactate and/or lactic acid begins to increase rapidly. It is often expressed as 85% of maximum heart rate or 75% of maximum oxygen intake. When exercising at or below the lactate threshold, any lactate produced by the muscles is removed by the body without it building up. The onset of blood lactate accumulation (OBLA) is often confused with the lactate threshold. With an exercise intensity higher than the threshold the lactate production exceeds the rate at which it can be broken down. The blood lactate concentration will show an increase equal to 4.0mM; it then accumulates in the muscle and then moves to the bloodstream. Regular endurance exercise leads to adaptations in skeletal muscle which raises the threshold at which lactate levels will rise. This is mediated via activation of PGC-1α, which alters the isoenzyme composition of the LDH complex and decreases the activity of the lacta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metabolic Equivalent
The metabolic equivalent of task (MET) is the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person, while performing some specific physical activity compared to a reference, set by convention at 3.5 mL of oxygen per kilogram per minute, which is roughly equivalent to the energy expended when sitting quietly. Quantitative definitions Based on oxygen utilization and body mass The original definition of metabolic equivalent of task is the oxygen used by a person in milliliters per minute per kilogram body mass divided by 3.5. Other definitions which roughly produce the same numbers have been devised, such as: : \text\ = 1 \, \frac\ = 4.184 \, \frac = 1.162 \, \frac where * kcal = kilocalorie * kg = kilogram * h = hour * kJ = kilojoule * W = watt Based on watts produced and body surface area Still another definition is based on the body surface area, BSA, and energy itself, where the BSA is expressed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power (physics)
In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called ''activity''. Power is a scalar quantity. Power is related to other quantities; for example, the power involved in moving a ground vehicle is the product of the aerodynamic drag plus traction force on the wheels, and the velocity of the vehicle. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft. Likewise, the power dissipated in an electrical element of a circuit is the product of the current flowing through the element and of the voltage across the element. Definition Power is the rate with respect to time at which work is done; it is the time derivative of work: P =\frac where is power, is work, and is time. If a constant force F is applied throughout a distance x, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaerobic Exercise
Anaerobic exercise is a type of exercise that breaks down glucose in the body without using oxygen; ''anaerobic'' means "without oxygen". In practical terms, this means that anaerobic exercise is more intense, but shorter in duration than aerobic exercise. The biochemistry of anaerobic exercise involves a process called glycolysis, in which glucose is converted to adenosine triphosphate (ATP), which is the primary source of energy for cellular reactions. This type of exercise leads to a buildup of lactic acid. Anaerobic exercise may be used to help build endurance, muscle strength, and power. Metabolism Anaerobic metabolism is a natural part of metabolic energy expenditure. Fast twitch muscles (as compared to slow twitch muscles) operate using anaerobic metabolic systems, such that any use of fast twitch muscle fibers leads to an increased anaerobic energy expenditure. Intense exercise lasting upwards of four minutes (e.g. a mile race) may still have considerable anaer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-intensity Interval Training
High-intensity interval training (HIIT) is a training protocol alternating short periods of intense or explosive anaerobic exercise with brief recovery periods until the point of exhaustion. HIIT involves exercises performed in repeated quick bursts at maximum or near maximal effort with periods of rest or low activity between bouts. The very high level of intensity, the interval duration, and number of bouts distinguish it from aerobic (cardiovascular) activity, because the body significantly recruits anaerobic energy systems (although not completely to the exclusion of aerobic pathways). The method thereby relies on "the anaerobic energy releasing system almost maximally". Although there are varying forms of HIIT-style workouts which may involve exercises associated with both cardiovascular activity and also resistance training, HIIT's crucial features of maximal effort, duration, and short rest periods (thereby triggering the anaerobic pathways of energy production) materiall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Respirometry
Respirometry is a general term that encompasses a number of techniques for obtaining estimates of the rates of metabolism of vertebrates, invertebrates, plants, tissues, cells, or microorganisms via an indirect measure of heat production (calorimetry). Whole-animal metabolic rates The metabolism of an animal is estimated by determining rates of carbon dioxide production (VCO2) and oxygen consumption (VO2) of individual animals, either in a closed or an open-circuit respirometry system. Two measures are typically obtained: standard (SMR) or basal metabolic rate (BMR) and maximal rate (VO2max). SMR is measured while the animal is at rest (but not asleep) under specific laboratory (temperature, hydration) and subject-specific conditions (e.g., size or allometry), age, reproduction status, post-absorptive to avoid thermic effect of food). VO2max is typically determined during aerobic exercise at or near physiological limits. In contrast, field metabolic rate (FMR) refers to the met ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Running Economy
Running economy (RE) measures runners' energy utilization when running at an aerobic intensity, and many physiological and biomechanical factors contribute to it. Oxygen consumption (VO2) is the most commonly used method for measuring running economy, as the exchange of gases in the body, specifically oxygen and carbon dioxide, closely reflects energy metabolism. Those who are able to consume less oxygen while running at a given velocity are said to have a better running economy. However, straightforward oxygen usage does not account for whether the body is metabolising lipids or carbohydrates, which produce different amounts of energy per unit of oxygen; as such, accurate measurements of running economy must use and data to estimate the calorific content of the substrate that the oxygen is being used to respire. In distance running, an athlete may attempt to improve performance through training designed to improve running economy. Running economy has been found to be a good ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Training Effect
Exercise physiology is the physiology of physical exercise. It is one of the allied health professions, and involves the study of the acute responses and chronic adaptations to exercise. Exercise physiologists are the highest qualified exercise professionals and utilise education, lifestyle intervention and specific forms of exercise to rehabilitate and manage acute and chronic injuries and conditions. Understanding the effect of exercise involves studying specific changes in muscular, cardiovascular, and neurohumoral systems that lead to changes in functional capacity and strength due to endurance training or strength training. The effect of training on the body has been defined as the reaction to the adaptive responses of the body arising from exercise or as "an elevation of metabolism produced by exercise". Exercise physiologists study the effect of exercise on pathology, and the mechanisms by which exercise can reduce or reverse disease progression. History British p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack Daniels (coach)
Jack Tupper Daniels (born April 26, 1933) is an exercise physiologist, running coach and a coach of Olympic athletes. On March 21, 2013, he was named the head coach of the Wells College men's and women's cross country programs. He received his doctoral degree in exercise physiology at the University of Wisconsin–Madison. Named "The World's Best Coach" by Runner's World magazine, he led SUNY Cortland runners to eight NCAA Division III National Championships, 31 individual national titles, and more than 130 All-America awards. Daniels outlined his training philosophies in the 1998 book, ''Daniels' Running Formula''. He mentors and coaches some of America's top distance runners in the country. Daniels won a team silver medal in the 1956 Summer Olympics and a team bronze medal in the 1960 Summer Olympics for his participation in the modern pentathlon. VDOT In the 1970s, Daniels and his colleague, Jimmy Gilbert, examined the performances and known VO2max values of elite middle and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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