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  • dose
  • The proportionality constant is 1/K. This is useful when trying to determine whether two formulations of the same dose (for example a capsule and a tablet) release the same dose of drug to the body. (wikipedia.org)
  • composition
  • BMI was designed to be used as a simple means of classifying average sedentary (physically inactive) populations, with an average body composition. (wikipedia.org)
  • In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies. (wikipedia.org)
  • The most accurate estimation of body composition is derived from body density by means of the equation of fractional densities which states that the overall density of a mixture containing more than one substance (each with a different density) can be calculated if the proportion and density of each component substance is known. (wikipedia.org)
  • Body composition measurement with dual energy X-ray absorptiometry (DEXA) is used increasingly for a variety of clinical and research applications. (wikipedia.org)
  • A DEXA scan requires medical supervision by a radiologist and some consider it to be the new "Gold Standard" in body composition testing. (wikipedia.org)
  • Another technique for measuring body composition has been developed for measuring body volume using a different method than underwater weighing. (wikipedia.org)
  • measurement
  • Body Mass Index or BMI is a reliable statistical measurement of a person's body fat. (probharat.com)
  • Various calculations have been published to arrive at the BSA without direct measurement. (wikipedia.org)
  • In crude terms, this measurement compares left and right cardiac activity and calculates preload and afterload flow and pressures which, theoretically, can be stabilized or adjusted with drugs to either constrict or dilate the vessels (to raise or lower, respectively, the pressure of blood flowing to the lungs), in order to maximize oxygen for delivery to the body tissues. (wikipedia.org)
  • 2D measurement of the diameter (d) of the aortic annulus allows calculation of the flow cross-sectional area (CSA), which is then multiplied by the VTI of the Doppler flow profile across the aortic valve to determine the flow volume per beat (stroke volume, SV). (wikipedia.org)
  • clinical
  • Justification for its continued use rests on a large body of clinical experience, disadvantages of other cardiac output monitoring systems, its ability to accurately measure pulmonary artery pressure, and the potential to use the catheter as a direct conduit for drug administration into the pulmonary artery. (wikipedia.org)
  • equations
  • While both the humidex and the heat index are calculated using dew point, the humidex uses a dew point of 45 °F (7 °C) as a base, whereas the heat index uses a dew point base of 57 °F (14 °C). Further, the heat index uses heat balance equations which account for many variables other than vapor pressure, which is used exclusively in the humidex calculation. (wikipedia.org)
  • Hence
  • Hence, it is possible for two women to have vastly different body mass indices but the same waist-hip ratio, or to have the same body mass index but vastly different waist-hip ratios. (wikipedia.org)
  • This results in a lower rate of heat removal from the body, hence the sensation of being overheated. (wikipedia.org)
  • Hence, the heat index could seem unrealistically low, unless resting inactive (idle) in heavily shaded areas. (wikipedia.org)
  • nonlinear
  • However, a recent analysis by iWeatherNet found the assumption to be erroneous given that the heat index/relative humidity relationship and the corresponding equilibrium temperature (the point at which the air temperature and the heat index are equal) are nonlinear. (wikipedia.org)
  • estimation
  • The two compartment model allows for an estimation of the proportions of fat and lean components of the body to be made from the overall body density. (wikipedia.org)
  • The estimation of body fatness from body density (by means of underwater weighing) was accepted as the "gold standard" for many decades. (wikipedia.org)
  • risks
  • It's a more general method of knowing what the body fat levels are like and what the risks for illness are. (wisegeek.com)
  • Various
  • The proportions of water, protein and mineral in the body are found by various chemical and radiometric tests. (wikipedia.org)
  • results
  • This results in taller people having a reported BMI that is uncharacteristically high, compared to their actual body fat levels. (wikipedia.org)
  • DEXA exams provide both total body and up to 14 regional (trunk, individual arms & legs, android, gynoid, etc.) results. (wikipedia.org)
  • This results in a heat index that relates one combination of temperature and humidity to another. (wikipedia.org)
  • simple
  • As with traditional calculations with real numbers, simple arithmetic operations and functions on elementary intervals must first be defined. (wikipedia.org)
  • Simple arithmetic operations, such as basic arithmetic and trigonometric functions, enable the calculation of outer limits of intervals. (wikipedia.org)
  • density
  • And, as explained above, the overall body density (Db) is easily calculated from body mass and body volume. (wikipedia.org)
  • Rearranging the equation of fractional densities to solve for the proportion of fat (f) will yield the following equation: f = 495 / D b − 450 {\displaystyle f=495/Db-450} The density of human fat is remarkably constant across all sub-groups studied but variations have been reported in the density of the fat free mass (i.e. lean or non-fat components). (wikipedia.org)
  • exact
  • The most common use is to keep track of and handle rounding errors directly during the calculation and of uncertainties in the knowledge of the exact values of physical and technical parameters. (wikipedia.org)
  • As far as I understand, body mass index is not an exact or detailed description of your health or fitness level. (wisegeek.com)
  • surface area
  • Flowcharts, e.g., a binary decision tree for deciding what is the etiology of chest pain Look-up tables, e.g., for looking up food energy and nutritional contents of foodstuffs Nomograms, e.g., a moving circular slide to calculate body surface area or drug dosages. (wikipedia.org)
  • typically
  • In order to determine the respective AUCs, the serum concentration vs. time plots are typically gathered using C-14 labeled drugs and AMS (accelerated mass spectroscopy). (wikipedia.org)
  • accurately
  • Significant deviations from these will result in heat index values which do not accurately reflect the perceived temperature. (wikipedia.org)
  • medical
  • Prescribed by dieticians and physicians, the inclusive Body Mass Index feature is easy to use for the monitoring of personal health and medical needs. (usab2c.com)
  • allows
  • The widely used body mass index (BMI) provides a measure that allows the comparison of the adiposity of individuals of different heights and weights. (wikipedia.org)
  • example
  • Take as an example the calculation of body mass index (BMI). (wikipedia.org)
  • For example, with a temperature in the shade of only 82 °F (28 °C) at 60% relative humidity, then the heat index would seem 84 °F (29 °C), but movement across sunny areas of 102 °F (39 °C), would give a heat index of over 137 °F (58 °C), as more indicative of the oppressive and sweltering heat. (wikipedia.org)
  • general
  • Anything not under those 5 categories must use the general calculation (e.g., the beneficiary may be counted with 18 months of general coverage, but only 6 months of dental coverage, because the beneficiary did not have a general health plan that covered dental until 6 months prior to the application date). (wikipedia.org)
  • accurate
  • their responsibilities include calculating accurate load information for center of gravity calculations, and ensuring cargo is properly secured to prevent its shifting. (wikipedia.org)
  • range
  • Bodybuilders may compete at essential body fat range, in fact certified personal trainers will suggest them to keep that extremely low level of body fat only for the contest time. (wikipedia.org)
  • Dose
  • The proportionality constant is 1/K. This is useful when trying to determine whether two formulations of the same dose (for example a capsule and a tablet) release the same dose of drug to the body. (wikipedia.org)
  • unless
  • The heat index also does not factor in the effects of wind, which lowers the apparent temperature, unless the air is above body temperature. (wikipedia.org)
  • people
  • Because the humidity index is based on temperatures in the shade, while people often move across sunny areas, then the heat index can give a much lower temperature than actual conditions of typical outdoor activities. (wikipedia.org)
  • Also, for people exercising or active, at the time, then the heat index could give a temperature lower than the felt conditions. (wikipedia.org)