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29 Cards in this Set
- Front
- Back
air plethysmography
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a procedure of assessing body composition by using air displacement to measure body volume allowing the calculation of body density.
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bioelectric impedance
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a procedure of assessing body composition in which an electrical current is passed through the body. the resistance to current flow through tissues reflects the relative amount of fat present.
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body composition
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the chemical composition of the body .
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body density
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body weight divided by body volume.
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carbohydrate loading
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increased dietary consumption of carbs a process used by athletes to increase carb stores in body prior to prolonged endurance exercise.
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dehydration
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loss of body fluids.
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densitometry
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the measurement of body density.
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dual energy X-ray absorptiometry
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a technique used to assess both regional and total body composition through the use of x-ray absorptiometry.
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electrolyte
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a dissolved substance that can conduct an electrical current.
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essential amino acids
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the eight or nine amino acids necessary for human growth that the body cannot synthesize and are thus essential parts of our diets.
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fat
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a class of organic compounds with limited water solubility that exists in the body in many forms such as triglucerides free fatty acids phospholipids and steroids.
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fat-free mass
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the mass of the body that is not fat including muscle bone skin and organs.
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fat mass
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the absolute amount of mass of body fat.
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female athlete triad
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three interrelated disorders ; eating menstrual and bone mineral disorder to which some female athletes are prone.
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free radicals
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univalent (unpaired) oxygen intermediates that leak out of the electron transport chain during metabolic processes and may damage tissues.
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gastric emptying
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the movement of food mixed with gastric secretion from the stomach into the duodenum.
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glycogen loading
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the manipulation of exercise and diet to optimize the body's glycogen storage.
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hydrostatic weighing
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weighing body volume while fully submerged in water.
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hyponatremia
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a blood sodium concentration below the normal range of 136 to 143
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intracellular fluid
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the approx 60-65% of total body water that is contained in the cells.
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macrominerals
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those minerals of which the body needs more than 100 mg per day.
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microminerals
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the mineral of which the body needs less than 100 mg per day
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nonessential amino acids
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the 11 or 12 amino acids that the body synthesizes.
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osmolarity
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the number of solutes dissolved in a fluid divided by the volume of that fluid.
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protein
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a class of nitrogen containing compounds formed by amino acids
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relative body fat
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the ratio of fat mass to total body mass expressed as a percentage.
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skin fold fat thickness
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the most widely applied field technique used to estimate body density relative body fat and fat free mass.
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thirst mechanism
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a neural mechanism that triggers thirst in response to dehydration.
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vitamin
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one of a group of unrelated organic compounds that perform specific functions to promote growth and to maintain health.
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