NSCA CSCS - Chapter 9 Flashcards
Acceptable Macronutrient Distribution Range (AMDR)
The relative proportion of macronutrients needed as a fraction of total caloric intake
Adequate Intake (AI)
Average daily nutrient intake level recommended when RDA cannot be established
Amino acids
Nitrogen-containing molecules that can join in groups of dozens to hundreds
Anemia
Chronic health condition that occurs with insufficient iron intake
Bioavailability
A relative measure of the body’s ability to use a given nutrient
Carbohydrate
Compounds composed of carbon, hydrogen, and oxygen that encompass a wide range of compounds that are formed of sugar molecules linked together
Cholesterol
Waxy fat-like substance that is a structural and functional component of cell membranes
Dehydration
State of water depletion beyond 2% of body weight
Dietary reference intakes (DRIs)
Complete set of nutrient intakes for evaluating and planning diets for healthy individuals
Disaccharides
Sugar molecules composed of two monosaccharides
Docosahexaenoic Acid (DHA)
Omega-3 essential fatty acid found in fatty fish
Eicosapentaenoic acid (EPA)
Omega-3 essential fatty acid found in fatty fish
Electrolytes
Sodium, potassium, and other mineral salts required for metabolism and biological function
Estimated average requirement (EAR)
Average daily nutrient intake level considered sufficient to meet the needs of half of the healthy population within each life stage and sex
Fat
A category of macronutrient composed of fatty acid chains
Fatty acids
Fat units composed of carbon, oxygen, and hydrogen
Fiber
Carbohydrate found in plant cell walls that is resistant to digestion
Fructose
Monosaccharide with the same chemical formula as glucose that is found in fruits and vegetables
Galactose
Monosaccharide that composes lactose along with a glucose molecule
Gluconeogenesis
Synthesis of glucose from non-carbohydrate sources
Glycemic index (GI)
Index that ranks carbohydrates according to how quickly they are digested and absorbed
Glycemic load (GL)
Portion of carbohydrate in a food multiplied by the GI of the food
Glycogen
Polysaccharide found in skeletal muscle and the liver that provides energy
Glycogenesis
Synthesis of glycogen
Glucose
Monosaccharide that is the primary carbohydrate energy source in human metabolism
High-density lipoprotein
Larger cholesterol molecules
Hydration
Relative amount of water in the body
Hypohydration
First stage of dehydration
Hyponatremia
Dangerous state of decreased sodium blood concentration
Lactose
Disaccharide found in mammalian milk composed of glucose and galactose
Low-density lipoprotein (LDL)
Small cholesterol molecules associated with heart disease at high blood levels
Macronutrient
Nutrients needed in large quantities by the human body - specifically protein, carbohydrates, and fats
Maltose
Double-sugar molecule composed of two glucose molecules
Micronutrient
Nutrients such as vitamins and minerals needed in small quantities by the human body
Minerals
Inorganic substances required for structure and function in the human body
Monosaccharides
Single-sugar carbohydrate molecules
Monounsaturated
Fatty acids with a single double-carbon bond
Muscle Protein Synthesis
The creation of new muscle fibers from amino acids
MyPlate
Food guidance system created by the U.S. Department of Agriculture based on 2010 Dietary Guidelines for Americans
Nutrient density
Relative amount of micronutrients to the calorie content of a food portion
Omega-3 fatty acid alpha-linolenic acid (ALA)
Omega-3 acid found in plant sources that can be inefficiently converted to EPA and DHA
Polypeptide
Proteins composed of 3 or more amino acids linked together
Polysaccharides
Multiple-sugar carbohydrate molecules composed of up to several thousand glucose units
Polyunsaturated
Fatty acids with multiple double-carbon bonds
Protein
The primary structural and functional component of every cell
Protein digestibility
Relative ability of a protein to supply amino acids via digestion
Protein digestibility correct amino acid score (PDCAAS)
Index that reflects the bioavailability and provision of essential amino acids in protein
Recommended Dietary Allowances (RDA)
Average daily nutrient requirement adequate for the needs of most healthy people in each life stage and sex
Saturated Fat
Fatty acids with no double-carbon bonds
Sports dietician
Registered dietician with specific education in sports nutrition
Sucrose
Table sugar - composed of 1 glucose and 1 fructose molecule
Tolerable upper intake level (UL)
Maximum average daily nutrient level not associated with adverse health effects
Triglycerides
Fat molecules
Very Low-Density Lipoproteins (VLDL)
The smallest type of cholesterol molecules
Vitamins
Organic substances required in small amounts for biological functioning