Glossary and Resources

Resources for the Fitness Professional:

Online Nutrition Tools for the Fitness Professional:

Key Words:
 

Absorption: The update of nutrients across a tissue or membrane by the gastrointestinal tract

Adequate intake (AI): The recommended nutrient intake level, based on research, appears to be sufficient for good health

Amino acids: The building blocks of proteins

Antioxidant: A substance that prevents or repairs oxidative damage

Blood lipids: A term used to describe all fatty substances found in the blood, including cholesterol and triglycerides

Calorie: Unit to measure energy; the amount of heat needed to raise one gram of water one degree Celsius

Carbohydrate: A group of organic compounds that includes sugars, starches and cellulose that serve as a major source of energy

Cholesterol: A fat-like substance found in the blood and body tissues and in certain foods

Complete protein: A food that contains all of the essential amino acids

Complex carbohydrate: A long chain of sugar that takes more time to digest than a simple carbohydrate

Dehydration: The loss or removal of water; in the body, when severe, can cause serious consequences

Dietary fiber: Fiber obtained naturally from plant foods

Dietary supplement: Products ingested by mouth that contain a dietary ingredient, such as vitamins, minerals, amino acids and herbs

Digestion: The process of breaking down food by mechanical and enzymatic action into substances that can be used by the body

Empty calorie: Calories that provide very little nutritional value

Essential nutrients: Nutrients that the body needs but cannot be manufactured by the body; they must be obtained from the diet

Fat: An essential nutrient that provides energy and energy storage to the body

Fiber: Carbohydrate chains the body cannot breakdown for use, which pass through the body undigested

Fortification: A process to help eliminate deficiencies of nutrients in the general population, it is the addition of vitamins and minerals added during the manufacturing of food products, such as cereal and snack foods

Glucose: A simple sugar; the form in which all carbohydrates are used as the body’s principle energy source

Glycogen: The chief carbohydrate storage material

Insulin: A hormone released from the pancreas that allows cells to take up glucose

Macro-nutrient: Nutrients needed in large amounts for normal growth and development

Malnutrition: Lack of proper nutrition caused by 1) not having enough to eat; 2) not eating enough of the right things; or 3) being unable to use the food that one does eat

Metabolism: The biochemical process of converting calories from food and drink into energy for maintaining life 

Micro-nutrient: Nutrients needed by the body in small amounts for normal growth and development  

Mineral: An inorganic substance needed in the diet in small amounts to help regulate bodily functions

Myelin sheath: A fatty insulating layer that speeds transmission of nerve impulses along neurons.

Neurons: Specialized cells that transmit nerve impulses

Nonessential nutrients: Nutrients the body needs and can be created by the body in the amount needed

Nutrient: A substance in food that provides energy and structure to the body and regulates bodily processes. The six classes of nutrients are carbohydrate, protein, fat, water, vitamins and minerals

Nutrient density: A food that is relatively rich in nutrients for the number of calories it contains

Over nutrition: Consuming more food than required to daily activities causing weight gain

Protein: A compound composed of a combination of 20 amino acids that is the major structural component of all body tissues

Registered dietitian: A food and nutrition expert that has met specific educational requirements, completed a supervised practice program, and passed a national accredited examination

Scope of practice: The range and limit of responsibilities normally associated with a specific job or profession

Simple carbohydrate: A short chain of sugar that is rapidly digested

Starch: A plant carbohydrate found in grains and vegetables

Under nutrition: Not consuming enough food resulting in unintended weight loss

Vitamin: An organic micronutrient that is essential for normal physiologic function

Water-soluble vitamin: A vitamin that requires adequate daily intake since the body excretes excesses in the urine; dissolvable in water