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Caloric theory Summary It was thought that caloric could be "sensible" in that it diffused among the particles of the material it was acting upon thereby surrounding each particle with an atmosphere of caloric. Caloric was also thought of as a weightless gas that could pass in and out of pores in solids and liquids. The "caloric theory" was abandoned by the mid-19th century in favor of the theory of heat. www.bookrags.com /Caloric_theory   (1223 words)

Caloric theory - Wikipedia, the free encyclopedia The caloric theory of heat is an obsolete scientific theory in thermodynamics, developed mostly during the 18th and 19th centuries. However, one of the greatest confirmations of the caloric theory was Pierre-Simon Laplace's theoretical correction of Sir Isaac Newton’s pulse equation. In this way, the caloric theory was absorbed into the annals of physics, to be replaced by modern thermodynamics, in which heat is the kinetic energy of molecules. en.wikipedia.org /wiki/Caloric   (677 words)

Encyclopedia: Caloric restriction   (Site not responding. Last check: 2007-11-05) Caloric restriction or Calorie restriction (CR) is the practice of limiting dietary energy intake to improve health and retard aging. In human subjects, CR is known to slow the signs of aging, as indicated by biomarkers such as cholesterol and blood pressure. The adjective "caloric" is inappropriate for the same reason that the theory of music is called "music theory," not "musical theory." A musical theory is a theory of a musical nature, not a theory of or about music. www.nationmaster.com /encyclopedia/Caloric-restriction   (1679 words)

Caloric Restriction: Friend or Foe? Caloric restriction is an experimental tool that utilizes "undernutrition without malnutrition." In other words, caloric restriction refers to a diet with between 30-40 percent fewer calories than is typical, but which contains all the necessary nutrients and vitamins to support life. First of all, caloric restriction seems to reduce damage from chemical metabolic processes, particularly oxidative and glycation damage, thought to be leading causes of cell aging and death. The main goal of mimicking caloric restriction through drugs is not necessarily to increase lifespan, but to reduce the incidence or delay the onset of age-related diseases and conditions and thereby improve the quality of later life. www.fitnessandfreebies.com /seniors/restrict.html   (651 words)

Caloric stimulation Caloric stimulation is a test which uses differences in temperature to diagnose ear nerve damage as a cause of dizziness or vertigo. Caloric stimulation should not be performed if the eardrum is perforated because of the risk of causing ear infection. Caloric stimulation is approximately 80% accurate in differentiating nerve damage as a cause of vertigo. www.pennhealth.com /ency/article/003429.htm   (694 words)

Caloric Information : by Ray Sahelian, M.D., caloric restriction Caloric restriction diet tends to resemble a traditional Mediterranean diet, which includes a wide variety of vegetables, olive oil, beans, whole grains, fish and fruit. Men and women who lose weight through caloric restriction, without exercise, also lose bone at the hip and spine, increasing their risk for the bone-thinning disease osteoporosis and fractures. Caloric requirement is largely genetically determined and generally range between 1,000 and 2,000 calories a day. www.raysahelian.com /caloric.html   (975 words)

How does caloric restriction slow down aging?   (Site not responding. Last check: 2007-11-05) Caloric restriction seems to slow down some of the destructive processes that take place in cells and tissues with aging. First of all, caloric restriction seems to reduce damage from chemical metabolic processes, particularly oxidative and glycation damage, thought to be leading causes of cell aging and death. Caloric restriction has been shown to increase the ability of aging rodents to produce glucocorticoids, which are natural steroids produced when the body is under stress. www.infoaging.org /b-cal-6role.html   (638 words)

Caloric restriction -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-05) Caloric restriction (CR) is the practice of limiting dietary energy intake to improve health and retard (The organic process of growing older and showing the effects of increasing age) aging. While scientists knew about the effects of CR since the 1930s, the first major demonstration of the benefits of caloric restriction was an (The act of conducting a controlled test or investigation) experimental trial conducted by Richard Weindruch. In the meantime, many people have independently adopted the practice of caloric restriction in some form, hoping to achieve the expected benefits themselves. www.absoluteastronomy.com /encyclopedia/c/ca/caloric_restriction.htm   (663 words)

CALORIC Caloric was awarded with the contract for the supply of a Basic Design and Engineering package for a hydrogen plant with a capacity of 21 t/d. Caloric is pleased to announce a contract for a CO generating plant based on Caloric’s proprietary CALCOR process. Caloric is pleased to announce its 14th participation in 39 years at this year´s ACHEMA in Frankfurt, May 19th to 24th. www.caloric.com /cms/front_content.php?idcat=23   (1869 words)

CALORIC TEST The caloric response was first described in by Robert Barany in 1906, and more completely in a book on the vestibular system in 1907. The caloric test is ordinarily performed with the subject reclining, head inclined 30 deg up from horizontal so as to make the lateral canal horizontal. The most common cause of absent caloric responses is poor ENG technique (such as use of air rather than water), and after that, aminoglycoside toxicity. www.dizziness-and-balance.com /testing/caloric_test.htm   (1487 words)

AFAR: The Importance of Caloric Restriction   (Site not responding. Last check: 2007-11-05) Caloric restriction has been shown to increase both the average and the maximal life spans in paramecia, worms, spiders, insects, and rodents. The optimism of those who study caloric restriction in primates has been bolstered by a new study showing that the immune system of aged rhesus monkeys on a calorie restricted diet resembles, in several ways, the immune system of younger animals. Although caloric restriction diets are so difficult to maintain that they are unlikely to be a practical approach to delayed aging for people, studying the mechanisms of calorie restriction is still very important. websites.afar.org /site/PageServer?pagename=IA_b_cal_4_import   (361 words)

Caloric restriction appears to prevent primary aging in the heart Studying heart function in members of an organization called the Caloric Restriction Society, investigators at Washington University School of Medicine in St. Louis found that their hearts functioned like the hearts of much younger people. "Caloric restriction does not mean eating half a hamburger and half a pack of French fries and drinking half of a sugary beverage," he says. He says caloric restriction tends to resemble a traditional Mediterranean diet, which includes a wide variety of vegetables, olive oil, beans, whole grains, fish and fruit. www.eurekalert.org /pub_releases/2006-01/wuso-cra011206.php   (1270 words)

Le Magazine, July 2006 - Report: Longevity Genes And Caloric Restriction Scientists are pushing forward by studying the effects of caloric restriction in humans and identifying changes in gene expression associated with the life span-extending effects of caloric restriction. Genes that respond to caloric restriction in various organs and tissues of an animal model (a long-lived hybrid mouse) are first identified in controlled studies. Caloric restriction’s neuroprotective effects, as demonstrated in animal models, are profound and likely to be produced in humans as well. www.lef.org /magazine/mag2006/jul2006_report_longevity_02.htm   (2273 words)

Caloric density The caloric density of a food is the numbers of calories that are contained in 1 gram of that food. For instance, brown rice has a caloric density of 1.2, which means that brown rice has 1.2 calories per gram. Thus crackers have a caloric density of 4.46. www.mayyoubehappy.com /caloricdensity1.html   (598 words)

Migraine-Related Vertigo and Complete Loss of Caloric Responsiveness   (Site not responding. Last check: 2007-11-05) Caloric function was studied with the use of alternate binaural bithermal caloric irrigation with a closed-loop irrigator with water at 30°C and 44°C. Her right ear was not responding to the caloric vestibular test, done with Frenzel glasses and her headache was at her right hemicranium. Auditory, timpanic reflex and caloric tests with Frenzel glasses were made and all tests were found normal except for unilaterally complete loss of caloric responsiveness of the headache side. During the attacks the caloric test was performed on the first and second day of pain and it was found to disappear completely at the side of the headache. ams.cu.edu.tr /September2000Vol9No3/yasar.html   (1438 words)

Early Theories of Gases Caloric was sometimes thought to be composed of particles that repel each other and are attracted to the atoms of ordinary matter. The caloric theory could also explain phenomena such as the latent heat of phase transitions (solid to liquid or liquid to gas) and the heat absorbed or released in chemical reactions, by postulating that some caloric is "bound" to the individual atoms or compounds. The ordinary pressure-volume relations of gases are determined by the unbound or "free" caloric that fills the space between particles. www.math.umd.edu /~lvrmr/History/EarlyTheories.html   (822 words)

Effect of caloric restriction on life span of the housefly, Musca domestica -- COOPER et al. 18 (13): 1591 -- The FASEB ... Caloric restriction was commenced at the age of 4 days (arrow). Caloric restriction shortened, rather than lengthened the life span of the flies. Caloric restriction apparently decreases the life span of houseflies by causing starvation. www.fasebj.org /cgi/content/full/18/13/1591   (1499 words)

Search Results for caloric - Encyclopædia Britannica The total caloric, or energy, requirement for an individual depends on age, occupation, and other factors but generally ranges between 2,000 and 4,000 calories per 24-hour period (one calorie, as... The goal is to regulate the patient's blood glucose level to as close to normal as possible and for the patient to... Includes discussion of the nutritional and caloric content of candy, federal regulation of the manufacture of candy, and information about the nutrients in the different kinds of chocolate used to make candy bars and other confections. www.britannica.com /search?query=caloric&submit=Find&source=MWTEXT   (474 words)

Caloric Restriction as a Mechanism Mediating Resistance to Environmental Disease The effects of caloric restriction on biomarkers of mitogenesis are generally consistent with the occurrence of hypercorticism during the early but not the late stages of caloric restriction. Interestingly, caloric restriction initiated at 6 weeks of age inhibited leukemia to a much greater extent than restriction initiated at 14 weeks, whereas pituitary adenoma formation was affected equally by both caloric restriction paradigms (179). As the mechanistic basis for the effect of caloric intake on disease processes becomes increasingly understood, it is becoming apparent that caloric intake may exert a similar impact on human mortality and disease. ehp.niehs.nih.gov /members/1998/Suppl-1/313-324frame/full.html   (9289 words)

NutritionData.com Caloric Ratio Pyramid   (Site not responding. Last check: 2007-11-05) The Caloric Ratio Pyramid appears in every ND analysis, and also on ND's Total Consumption report. The main portion of the Caloric Ratio Pyramid is a color-coded triaxial graph, with a position marker that simultaneously indicates the percentages of carbohydrates, fats, and protein. In other words, if the Caloric Ratio Pyramid's position marker falls within your target zone, then that food may be good to include in your diet. www.nutritiondata.com /help/caloric-ratio-pyramid   (888 words)

Caloric Restriction in Monkeys May Extend Life and Health A second recent study from the NIA has shown caloric restriction slows the age-related decrease in amounts of a naturally-occurring steroid hormone, DHEA. It is demonstrated here for the first time that caloric restriction can lead to changes in HDLs and other lipid profiles that may be associated with health benefits for both those animals that are lean as well as those that are heavier. Roth, Lane, Donald Ingram of the NIA and Dr. Sheldon Ball at the University of San Francisco-Fresno, appeared in the July 1997 issue of the Journal of Clinical Endocrinology and Metabolism. www.docguide.com /dg.nsf/PrintPrint/7A24D5A03200F8588525652500544B3A   (751 words)

Diet - Caloric Excess Essentially caloric excess is what allows your body to grow and get bigger than it currently is now. So given that some of these people are already lean (no caloric excess) and run their diets based at the margin of a calculation, these people can go through a good training program, get strong as hell raising their capacities in all the lifts and not gain any weight. Either way, if caloric excess is present - one will not be the same weight and body composition by the very definition of caloric excess. www.geocities.com /elitemadcow1/Topics/Diet.htm   (1554 words)

Society for Neuroscience | Caloric Restriction   (Site not responding. Last check: 2007-11-05) For example, caloric restriction improves the lagging performance of aged rodents on learning, memory and coordination tasks. Research, however, uncovered evidence that caloric restriction limits detrimental free radical activity and protects the cells and function. This work and other studies in animals suggest that caloric restriction may be able to protect the brain from some aspects of brain disease. www.sfn.org /index.cfm?pagename=brainBriefings_caloricRestriction   (865 words)

[No title] Contrary to his argument, the historical record of the caloric theory reveals that beliefs about the properties of material caloric, rejected by subsequent theories, were indeed central to the successes of the caloric theory. Laplace's central premises were that the caloric fluid was made up of point-like particles of caloric, and that the caloric particles, most of which were contained within molecules of matter, repelled each other with a force that was a function of distance only. Temperature was defined as the density of "free caloric of space", which was a small amount of caloric flying around in inter-molecular spaces, dislodged from the molecules by inter-caloric repulsion. philsci-archive.pitt.edu /archive/00001059/00/Chang.doc   (4272 words)

SignOnSanDiego.com > News > Science -- Live and let diet Caloric restriction may be simple to describe, but how it works turns out to be awfully hard to explain. Since Walford's work, caloric restriction studies have been conducted – and are being conducted – on a wide variety of organisms, from yeast and spiders to fish and dogs. More profoundly, writes Richard Weindruch, a geriatric researcher at the University of Wisconsin at Madison, caloric restriction appears to consistently increase not just the average life span of a subject population, but also the maximum life span or lifetime of the longest-surviving members of a group or species. www.signonsandiego.com /news/science/20041124-9999-lz1c24cr.html   (2640 words)

Alzforum: Forum Discussions: Caloric Restriction: Eat Less, Live Longer! While in many cases caloric restriction and intermittent fasting are beneficial when followed in a prophylactic manner, such diets may be ineffective or detrimental in some cases. Caloric restriction increases neurotrophic factor levels and attenuates neurochemical and behavioral deficits in a primate model of Parkinson's disease. Thus, the risk of AD may be reduced by caloric restriction because it is generally associated with a better balance of nutritional factors and is, thus, less likely to adversely affect the trace mineral composition of the body and brain. www.alzforum.org /res/for/journal/mattson2   (3125 words)

BioMarker Pharmaceuticals, Inc. | Technology | Scientific Publications |   (Site not responding. Last check: 2007-11-05) Our contribution here has been looking at how rapidly the effects of caloric restriction are established in animals that have been allowed to eat almost all that they wanted for their entire lives, like most people do. We are testing drugs for their calorie restriction mimetic effects and are continuing to look at the effects of different periods of caloric restriction in many tissues in both mice and monkeys, and we are also planning studies in humans. One of the ways we're trying to get at the answer to that question is to look at various times after the onset of caloric restriction: at the changes that happen early, at a middle time and late. www.biomarkerinc.com /html/december_2001.htm   (8439 words)

Caloric Restriction Does not Slow Aging in Humans   (Site not responding. Last check: 2007-11-05) What is needed is a false prediction from a postulated anti-aging effect of caloric restriction that could then be used in turn to falsify that hypothesis. If caloric restriction retards the rate of aging and extends maximum life span in humans one must expect that a lower BMI would be significantly associated with reduced mortality in aged humans. If such an significant association is not found then caloric intake is not operative in modifying the rate of aging in humans and life spans beyond 120 will not be possible by reducing caloric intake. www.cryonet.org /cgi-bin/dsp.cgi?msg=9197   (498 words)

Caloric Restriction as a Mechanism Mediating Resistance to Environmental Disease It has been suggested from animal studies that caloric intake may be the primary effector for many hormonal, metabolic, physiologic, and behavioral responses that coordinate reproductive strategy to apparent availability of food. When caloric intake is excessive, particularly at critical developmental stages, physiologic priorities are set for body growth and fecundity rather than for endurance and longevity. Calorically restricted rodents have significantly longer reproductive and total life spans than their ad libitum-fed controls and exhibit a spectrum of biochemical and physiologic alterations that characterize their adaptation to reduced caloric intake. www.herc.org /news/mcsarticles/frame.htm   (9526 words)

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